v3.26.1
Investment Risks
Aug. 21, 2026
Emerging Markets AI MAG 3 ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers.

 

Emerging Markets AI MAG 3 ETF | Artificial Intelligence Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Artificial Intelligence Risk. Issuers engaged in artificial intelligence typically have high research and capital expenditures and, as a result, their profitability can vary widely, if they are profitable at all. The space in which they are engaged is highly competitive and issuers’ products and services may become obsolete very quickly. These companies are heavily dependent on intellectual property rights and may be adversely affected by loss or impairment of those rights. The issuers are also subject to legal, regulatory and political changes that may have a large impact on their profitability. A failure in an issuer’s product or even questions about the safety of the product could be devastating to the issuer, especially if it is the marquee product of the issuer. It can be difficult to accurately capture what qualifies as an artificial intelligence company.

 

Emerging Markets AI MAG 3 ETF | Sector Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Sector Risks. To the extent the Fund invests more heavily in particular sectors, its performance will be especially sensitive to developments that significantly affect those sectors. The Fund may invest a significant portion of its assets in the following sectors and, therefore, the performance of the Fund could be negatively impacted by events affecting each of these sectors.

 

Emerging Markets AI MAG 3 ETF | Information Technology Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Information Technology Sector Risk. The information technology sector includes companies engaged in internet software and services, technology hardware and storage peripherals, electronic equipment instruments and components, and semiconductors and semiconductor equipment, among other things. Information technology companies face intense competition, both domestically and internationally, which may have an adverse effect on profit margins. Information technology companies may have limited product lines, markets, financial resources or personnel. The products of information technology companies may face rapid product obsolescence due to technological developments and frequent new product introduction, unpredictable changes in growth rates and competition for the services of qualified personnel. Failure to introduce new products, develop and maintain a loyal customer base, or achieve general market acceptance for their products could have a material adverse effect on a company’s business. Companies in the information technology sector are heavily dependent on intellectual property and the loss of patent, copyright and trademark protections may adversely affect the profitability of these companies.

 

Emerging Markets AI MAG 3 ETF | Semiconductors and Semiconductor Equipment Industry Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Semiconductors and Semiconductor Equipment Industry Risk. Semiconductor companies may face intense competition, both domestically and internationally, and such competition may have an adverse effect on their profit margins. Semiconductor companies may have limited product lines, markets, financial resources or personnel. Semiconductor companies’ supply chain and operations are dependent on the availability of materials that meet exacting standards and the use of third parties to provide components and services. Semiconductor companies may rely on a limited number of suppliers, or upon suppliers in a single location, for certain materials, equipment or tools. Finding and qualifying alternate or additional suppliers can be a lengthy process that can cause production delays or impose unforeseen costs, and such alternatives may not be available at all. Production can be disrupted by the unavailability of resources, such as water, silicon, electricity, gases and other materials. Suppliers may also increase prices or encounter cybersecurity or other issues that can disrupt production or increase production costs.

 

Emerging Markets AI MAG 3 ETF | Consumer Discretionary Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Consumer Discretionary Sector Risk. The consumer discretionary sector may be affected by changes in domestic and international economies, exchange and interest rates, competition, consumers’ disposable income, consumer preferences, social trends and marketing campaigns.
Emerging Markets AI MAG 3 ETF | Utilities Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Utilities Sector Risk. Utility companies are affected by supply and demand, operating costs, government regulation, environmental factors, liabilities for environmental damage and general civil liabilities, and rate caps or rate changes. Although rate changes of a regulated utility usually fluctuate in approximate correlation with financing costs, due to political and regulatory factors rate changes ordinarily occur only following a delay after the changes in financing costs. This factor will tend to favorably affect a regulated utility company's earnings and dividends in times of decreasing costs, but conversely, will tend to adversely affect earnings and dividends when costs are rising. The value of regulated utility equity securities may tend to have an inverse relationship to the movement of interest rates. Certain utility companies have experienced full or partial deregulation in recent years. These utility companies are frequently more similar to industrial companies in that they are subject to greater competition and have been permitted by regulators to diversify outside of their original geographic regions and their traditional lines of business. These opportunities may permit certain utility companies to earn more than their traditional regulated rates of return. Some companies, however, may be forced to defend their core business and may be less profitable. In addition, natural disasters, terrorist attacks, government intervention or other factors may render a utility company's equipment unusable or obsolete and negatively impact profitability.

 

Emerging Markets AI MAG 3 ETF | Energy Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Energy Sector Risk. Energy companies may be adversely affected by fluctuations in energy prices, supply and demand, commodity markets, geopolitical events, regulatory developments, environmental considerations, and capital spending requirements. Energy infrastructure and power-generation companies may require substantial ongoing investment and may be subject to operational, permitting, and financing risks.

 

Emerging Markets AI MAG 3 ETF | Communications Services Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Communications Services Sector Risk. Companies in the Communications Services Sector are subject to extensive government regulation. The costs of complying with governmental regulations, delays or failure to receive required regulatory approvals, or the enactment of new adverse regulatory requirements may adversely affect the business of such companies. Companies in the Communications Services Sector also can be significantly affected by intense competition, including competition with alternative technologies such as wireless communications (including with 5G and other technologies), product compatibility, consumer preferences, rapid product obsolescence, and research and development of new products. Technological innovations may make the products and services of such companies obsolete. Media content creation carries risks of changing consumer tastes and running afoul of regulatory content guidelines, which could result in large fines or the loss of regulatory licenses. Media companies collect significant amounts of personal consumer data and are at risk of data breaches and fines for the unauthorized and unplanned public release of sensitive consumer data.

 

Emerging Markets AI MAG 3 ETF | Industrials Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Industrials Sector Risk. Companies in the Industrials Sector can be significantly affected by supply and demand for specific products or services and for Industrials Sector products in general; a decline in demand for products due to rapid technological developments and frequent new product introduction; government regulation, world events and economic conditions; and the risks associated with potential environmental damage and product liability claims.

 

Emerging Markets AI MAG 3 ETF | Foreign Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Foreign Securities Risk. Investments in non-U.S. securities involve risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. There may be less information publicly available about a non-U.S. issuer than a U.S. issuer. Non-U.S. issuers may be subject to different accounting, auditing, financial reporting and investor protection standards than U.S. issuers. Changes to the financial condition or credit rating of foreign issuers may also adversely affect the value of the Fund’s securities. Investments in non-U.S. securities may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. Because legal systems differ, there is also the possibility that it will be difficult to obtain or enforce legal judgments in some countries. Since foreign exchanges may be open on days when the Fund does not price its Shares, the value of the securities in the Fund’s portfolio may change on days when shareholders will not be able to purchase or sell the Fund’s Shares. Conversely, Shares may trade on days when foreign exchanges are closed. Investment in foreign securities may involve higher costs than investment in U.S. securities, including higher transaction and custody costs as well as the imposition of additional taxes by foreign governments. Each of these factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

 

Emerging Markets AI MAG 3 ETF | Emerging Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Emerging Markets Risk. Investments in securities and instruments traded in developing or emerging markets, or that provide exposure to such securities or markets, can involve additional risks relating to political, economic, or regulatory conditions not associated with investments in U.S. securities and instruments. For example, developing and emerging markets may be subject to (i) greater market volatility, (ii) lower trading volume and liquidity, (iii) greater social, political and economic uncertainty, (iv) governmental controls on foreign investments and limitations on repatriation of invested capital, (v) lower disclosure, corporate governance, auditing and financial reporting standards, (vi) fewer protections of property rights, (vii) restrictions on the transfer of securities or currency, and (viii) settlement and trading practices that differ from those in U.S. markets. Each of these factors may impact the ability of the Fund to buy, sell or otherwise transfer securities, adversely affect the trading market and price for Shares to decline in value.

 

 

Emerging Markets AI MAG 3 ETF | Frontier Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Frontier Markets Risk. Frontier market countries generally have smaller economies and even less developed capital markets than typical emerging market countries (which themselves have increased investment risk relative to more developed market countries) and, as a result, the Fund’s exposure to risks associated with investing in emerging market countries are magnified when the Fund invests in frontier market countries. The increased risks include: the potential for extreme price volatility and illiquidity in frontier market countries; government ownership or control of parts of the private sector and of certain companies; trade barriers, exchange controls, managed adjustments in relative currency values and other protectionist measures imposed or negotiated by the countries with which frontier market countries trade; and the relatively new and unsettled securities laws in many frontier market countries. In addition, frontier market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Many frontier market countries are heavily dependent on international trade, which makes them more sensitive to world commodity prices and economic downturns and other conditions in other countries. Some frontier market countries have a higher risk of currency devaluations, and some of these countries may experience periods of high inflation or rapid changes in inflation rates and may have hostile relations with other countries. Securities issued by foreign governments or companies in frontier market countries are even more likely than emerging markets securities to have greater exposure to the risks of investing in foreign securities.

 

Emerging Markets AI MAG 3 ETF | Depositary Receipt Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Depositary Receipt Risks. Depositary receipts involve risks similar to those associated with investments in foreign securities and certain additional risks. Depositary receipts listed on U.S. exchanges are issued by banks or trust companies and entitle the holder to all dividends and capital gains that are paid out on the underlying foreign shares (“Underlying Shares”). When the Fund invests in depositary receipts as a substitute for an investment directly in the Underlying Shares, the Fund is exposed to the risk that the depositary receipts may not provide a return that corresponds precisely with that of the Underlying Shares. The Fund may invest in unsponsored depositary receipts. The issuers of unsponsored depositary receipts are not obligated to disclose material information in the United States and, therefore, there may be less information available regarding such issuers and there may not be a correlation between such information and the value of the depositary receipts.

 

Emerging Markets AI MAG 3 ETF | Currency Exchange Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Currency Exchange Rate Risk. The Fund’s assets may include exposure to investments denominated in non-U.S. currencies or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investments and the value of Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

 

Emerging Markets AI MAG 3 ETF | China Investing Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  China Investing Risks. The Chinese economy is generally considered an emerging market and can be significantly affected by economic and political conditions and policy in China and surrounding Asian countries. A relatively small number of Chinese companies represent a large portion of China’s total market and thus may be more sensitive to adverse political or economic circumstances and market movements. The economy of China differs, often unfavorably, from the U.S. economy in such respects as structure, general development, government involvement, wealth distribution, rate of inflation, growth rate, allocation of resources and capital reinvestment, among others. Prior to August 2022, the Public Company Accounting Oversight Board (“PCAOB”), which regulates auditors of U.S. public companies, had warned that it lacked the ability to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. In August 2022, the PCOAB secured its ability, through a formal agreement with Chinese authorities, to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. The PCAOB’s limited ability to oversee the operations of accounting firms in China and Hong Kong means that inaccurate or incomplete financial records of an issuer’s operations may not be detected, which could negatively impact the Fund’s investments in such companies. Under China’s political and economic system, the central government has historically exercised substantial control over virtually every sector of the Chinese economy through administrative regulation and/or state ownership. The Chinese government strictly regulates the payment of foreign currency denominated obligations and sets monetary policy. The Chinese government may introduce new laws and regulations that could have an adverse effect on the Fund. Although China has begun the process of privatizing certain sectors of its economy, privatized entities may lose money and/or be re-nationalized. In addition, expropriation, including nationalization, confiscatory taxation, political, economic or social instability or other developments could adversely affect and significantly diminish the values of the Chinese companies in which the Fund invests. International trade tensions may arise from time to time which can result in trade tariffs, embargoes, trade limitations, trade wars and other negative consequences. These consequences may trigger a reduction in international trade, the oversupply of certain manufactured goods, substantial price reductions of goods and possible failure of individual companies and/or large segments of China’s export industry with a potentially severe negative impact to the Fund. From time to time and as recently as January 2020, China has experienced outbreaks of infectious illnesses, and the country may be subject to other public health threats or similar issues in the future. Any spread of an infectious illness, public health threat or similar issue could reduce consumer demand or economic output, result in market closures, travel restrictions or quarantines, and generally have a significant impact on the Chinese economy.

 

Emerging Markets AI MAG 3 ETF | China A-Shares Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

  o China A-Shares Investment Risk. The liquidity of the A-shares market and trading prices of A-shares could be more severely affected than the liquidity and trading prices of other markets because the Chinese government restricts the flow of capital into and out of the A-shares market. The Fund may experience losses due to illiquidity of the Chinese securities markets or delay or disruption in execution or settlement of trades. The Fund’s investments in A-shares may become subject to frequent and widespread trading halts. In addition, trading through Stock Connect, which is a securities trading and clearing link between the mainland China stock exchanges and the Hong Kong stock exchange, is subject to a number of restrictions that may affect the Fund’s investments and returns. For example, trading through Stock Connect is subject to daily quotas that limit the maximum daily net purchases on any particular day, which may restrict or preclude the Fund’s ability to invest in China A-shares through Stock Connect.

 

  o In addition, investments made through Stock Connect are subject to trading, clearance and settlement procedures that are relatively untested, which could pose risks to the Fund. Moreover, China A-shares purchased through Stock Connect generally may not be sold, purchased or otherwise transferred other than through Stock Connect in accordance with applicable rules. A primary feature of Stock Connect is the application of the home market’s laws and rules applicable to investors in China A-shares. Therefore, the Fund’s investments in China A-shares purchased through Stock Connect are generally subject to Chinese securities regulations and listing rules, among other restrictions. While overseas investors currently are exempt from paying capital gains or value added taxes on income and gains from investments in China A-shares purchased through Stock Connect, these tax rules could be changed, which could result in unexpected tax liabilities for the Fund. Stock Connect only operates on days when the Chinese and Hong Kong stock markets are each open for trading and when banks in each market are open on the corresponding settlement days. The Fund may purchase and sell A-shares through Stock Connect only on days when Stock Connect and U.S. markets are open for trading. Therefore, if it is a normal trading day for the Chinese market but Hong Kong and/or U.S. markets are closed, the Fund will not be able to trade any A-shares. The Fund may be subject to the risk of price fluctuations in A-shares on such days. The Fund is also subject to the risk that it will not be able to buy or sell A-shares in a timely manner on days when the U.S. markets are open but Stock Connect is not. Stock Connect is a relatively new program. Further developments are likely and there can be no assurance as to the program’s continued existence or whether future developments regarding the program may restrict or adversely affect the Fund’s investments or returns. In addition, the application and interpretation of the laws and regulations of Hong Kong and China, and the rules, policies or guidelines published or applied by relevant regulators and exchanges in respect of Stock Connect are uncertain, and they may have a detrimental effect on the Fund’s investments and returns.

 

Emerging Markets AI MAG 3 ETF | Variable Interest Equity Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

  o

Variable Interest Equity Investment Risk. For purposes of raising capital offshore on exchanges outside of China, including on U.S. exchanges, many Chinese-based operating companies are structured as VIEs. In this structure, the Chinese-based operating company is the VIE and establishes a shell company in a foreign jurisdiction, such as the Cayman Islands. The shell company lists on a foreign exchange and enters into contractual arrangements with the VIE. This structure allows Chinese companies in which the government restricts foreign ownership to raise capital from foreign investors. While the shell company has no equity ownership of the VIE, these contractual arrangements permit the shell company to consolidate the VIE’s financial statements with its own for accounting purposes and provide for economic exposure to the performance of the underlying Chinese operating company. Therefore, an investor in the listed shell company, such as the Fund, will have exposure to the Chinese-based operating company only through contractual arrangements and has no ownership in the Chinese-based operating company. Furthermore, because the shell company only has specific rights provided for in these service agreements with the VIE, its abilities to control the activities at the Chinese-based operating company are limited and the operating company may engage in activities that negatively impact investment value.

 

While the VIE structure has been widely adopted, it is not formally recognized under Chinese law and therefore there is a risk that the Chinese government could prohibit the existence of such structures or negatively impact the VIE’s contractual arrangements with the listed shell company by making them invalid. If these contracts were found to be unenforceable under Chinese law, investors in the listed shell company, such as the Fund, may suffer significant losses with little or no recourse available. If the Chinese government determines that the agreements establishing the VIE structures do not comply with Chinese law and regulations, including those related to restrictions on foreign ownership, it could subject a Chinese-based issuer to penalties, revocation of business and operating licenses, or forfeiture of ownership interest. In addition, the listed shell company’s control over a VIE may also be jeopardized if a natural person who holds the equity interest in the VIE breaches the terms of the agreement, is subject to legal proceedings or if any physical instruments for authenticating documentation, such as chops and seals, are used without the Chinese-based issuer’s authorization to enter into contractual arrangements in China. Chops and seals, which are carved stamps used to sign documents, represent a legally binding commitment by the company. Moreover, any future regulatory action may prohibit the ability of the shell company to receive the economic benefits of the Chinese-based operating company, which may cause the value of the Fund’s investment in the listed shell company to suffer a significant loss. For example, in 2021, the Chinese government prohibited use of the VIE structure for investment in after-school tutoring companies. There is no guarantee that the government will not place similar restrictions on other industries.

 

Emerging Markets AI MAG 3 ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the underlying asset and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:

 

Emerging Markets AI MAG 3 ETF | Swap Agreements [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Swap Agreements. The use of swap transactions is a highly specialized activity, which involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. Whether the Fund will be successful in using swap agreements to achieve its investment goal depends on the ability of the Adviser to structure such swap agreements in accordance with the Fund’s investment objective and to identify counterparties for those swap agreements. Additionally, any financing, borrowing or other costs associated with using swap transactions may also have the effect of lowering the Fund’s return. The swap agreements in which the Fund invests are generally traded in the over-the-counter market, which generally has less transparency than exchange-traded derivatives instruments. In a standard swap transaction, two parties agree to exchange the return (or differentials in rates of return) earned or realized on particular predetermined reference assets or underlying securities or instruments. The gross return to be exchanged or swapped between the parties is calculated based on a notional amount or the return on or change in value of a particular dollar amount invested in a basket of securities.
Emerging Markets AI MAG 3 ETF | Forward Contracts [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Forward Contracts. A forward contract is a negotiated agreement between two parties to buy or sell an asset, reference instrument, or other financial exposure at a specified price on a specified future date. Forward contracts may be used to obtain or manage exposure to particular securities, markets, sectors, countries, indices, or other investments more efficiently than investing directly in the underlying instruments. Forward contracts are subject to the risk that the value of the contract may not correlate perfectly with the value of the assets, markets, or exposures being hedged or tracked. The use of forward contracts may reduce or eliminate the opportunity for gain if the value of the underlying exposure moves in a direction favorable to the Fund’s position. Because forward contracts are typically privately negotiated and traded in the over-the-counter market, they may be less liquid than exchange-traded instruments and subject the Fund to counterparty risk, which is the risk that the other party to the contract will fail to perform its obligations. Forward contracts also may involve leverage and can result in losses that exceed the amount initially invested. The Fund’s use of forward contracts may increase the volatility of the Fund’s returns and may result in losses if the Sub-Adviser’s investment views or analyses prove incorrect. Unanticipated changes in the value of the underlying reference exposure may result in poorer overall performance for the Fund than if the Fund had not entered into such contracts.

 

Emerging Markets AI MAG 3 ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in derivatives which exposes the Fund to the risk that the counterparty will not fulfill its obligation to the Fund. Counterparty risk may arise because of the counterparty’s financial condition (i.e., financial difficulties, bankruptcy, or insolvency), market activities and developments, or other reasons, whether foreseen or not. A counterparty’s inability to fulfill its obligation may result in significant financial loss to the Fund and the Fund may be unable to recover its investment from such counterparty or may obtain a limited and/or delayed recovery.

 

Emerging Markets AI MAG 3 ETF | Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Concentration Risk. The Fund will concentrate its investment exposure (i.e., more than 25% of its total assets) in the information technology industry or groups of industries related to information technology, including the semiconductor industry. As a result, the value of the Fund’s Shares may rise and fall more than the value of shares that are invested in securities or financial instruments of companies that encompass a broader range of industries.

 

Emerging Markets AI MAG 3 ETF | Economic and Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.

 

Emerging Markets AI MAG 3 ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

 

Emerging Markets AI MAG 3 ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

 

Emerging Markets AI MAG 3 ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.

 

 

Emerging Markets AI MAG 3 ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 

Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

 

Emerging Markets AI MAG 3 ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

 

Emerging Markets AI MAG 3 ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Trading. Although Shares are listed on a national securities exchange, such as The Nasdaq Stock Market, LLC (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged. As a result, the Fund could be adversely affected and be unable to implement its investment strategies in the event of an unscheduled closing.

 

Emerging Markets AI MAG 3 ETF | Geographic Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Geographic Investment Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region.

 

Emerging Markets AI MAG 3 ETF | Market Capitalization Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risks.

 

Emerging Markets AI MAG 3 ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

 

Emerging Markets AI MAG 3 ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective. 

 

Emerging Markets AI MAG 3 ETF | New Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

New Fund Risk. The Fund is a recently organized management investment company with no operating history. As a result, prospective investors do not have a track record or history on which to base their investment decisions.

 

Emerging Markets AI MAG 3 ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is a recently formed entity and has only limited experience with managing an exchange-traded fund regulated under the 1940 Act. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser’s effectiveness.

 

Emerging Markets AI MAG 3 ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Advisers seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

 

Emerging Markets AI MAG 3 ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

 

Emerging Markets AI MAG 3 ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
Emerging Markets AI MAG 3 ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.

 

Emerging Markets Memory ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers.

 

Emerging Markets Memory ETF | Sector Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Sector Risks. To the extent the Fund invests more heavily in particular sectors, its performance will be especially sensitive to developments that significantly affect those sectors. The Fund may invest a significant portion of its assets in the following sectors and, therefore, the performance of the Fund could be negatively impacted by events affecting each of these sectors.

 

Emerging Markets Memory ETF | Information Technology Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Information Technology Sector Risk. The information technology sector includes companies engaged in internet software and services, technology hardware and storage peripherals, electronic equipment instruments and components, and semiconductors and semiconductor equipment, among other things. Information technology companies face intense competition, both domestically and internationally, which may have an adverse effect on profit margins. Information technology companies may have limited product lines, markets, financial resources or personnel. The products of information technology companies may face rapid product obsolescence due to technological developments and frequent new product introduction, unpredictable changes in growth rates and competition for the services of qualified personnel. Failure to introduce new products, develop and maintain a loyal customer base, or achieve general market acceptance for their products could have a material adverse effect on a company’s business. Companies in the information technology sector are heavily dependent on intellectual property and the loss of patent, copyright and trademark protections may adversely affect the profitability of these companies.

 

Emerging Markets Memory ETF | Semiconductors and Semiconductor Equipment Industry Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Semiconductors and Semiconductor Equipment Industry Risk. Semiconductor companies may face intense competition, both domestically and internationally, and such competition may have an adverse effect on their profit margins. Semiconductor companies may have limited product lines, markets, financial resources or personnel. Semiconductor companies’ supply chain and operations are dependent on the availability of materials that meet exacting standards and the use of third parties to provide components and services. Semiconductor companies may rely on a limited number of suppliers, or upon suppliers in a single location, for certain materials, equipment or tools. Finding and qualifying alternate or additional suppliers can be a lengthy process that can cause production delays or impose unforeseen costs, and such alternatives may not be available at all. Production can be disrupted by the unavailability of resources, such as water, silicon, electricity, gases and other materials. Suppliers may also increase prices or encounter cybersecurity or other issues that can disrupt production or increase production costs.

 

  o The memory technology industry is highly cyclical and may experience significant fluctuations in pricing, profitability and demand. Memory products may become oversupplied, resulting in declining prices, reduced margins and lower earnings. Memory manufacturers often require substantial capital expenditures to remain competitive and may be adversely affected by rapid technological changes, inventory imbalances, manufacturing disruptions and changing customer preferences.

 

 

Emerging Markets Memory ETF | Foreign Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Foreign Securities Risk. Investments in non-U.S. securities involve risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. There may be less information publicly available about a non-U.S. issuer than a U.S. issuer. Non-U.S. issuers may be subject to different accounting, auditing, financial reporting and investor protection standards than U.S. issuers. Changes to the financial condition or credit rating of foreign issuers may also adversely affect the value of the Fund’s securities. Investments in non-U.S. securities may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. Because legal systems differ, there is also the possibility that it will be difficult to obtain or enforce legal judgments in some countries. Since foreign exchanges may be open on days when the Fund does not price its Shares, the value of the securities in the Fund’s portfolio may change on days when shareholders will not be able to purchase or sell the Fund’s Shares. Conversely, Shares may trade on days when foreign exchanges are closed. Investment in foreign securities may involve higher costs than investment in U.S. securities, including higher transaction and custody costs as well as the imposition of additional taxes by foreign governments. Each of these factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

 

Emerging Markets Memory ETF | Emerging Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Emerging Markets Risk. Investments in securities and instruments traded in developing or emerging markets, or that provide exposure to such securities or markets, can involve additional risks relating to political, economic, or regulatory conditions not associated with investments in U.S. securities and instruments. For example, developing and emerging markets may be subject to (i) greater market volatility, (ii) lower trading volume and liquidity, (iii) greater social, political and economic uncertainty, (iv) governmental controls on foreign investments and limitations on repatriation of invested capital, (v) lower disclosure, corporate governance, auditing and financial reporting standards, (vi) fewer protections of property rights, (vii) restrictions on the transfer of securities or currency, and (viii) settlement and trading practices that differ from those in U.S. markets. Each of these factors may impact the ability of the Fund to buy, sell or otherwise transfer securities, adversely affect the trading market and price for Shares to decline in value.

 

Emerging Markets Memory ETF | Frontier Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Frontier Markets Risk. Frontier market countries generally have smaller economies and even less developed capital markets than typical emerging market countries (which themselves have increased investment risk relative to more developed market countries) and, as a result, the Fund’s exposure to risks associated with investing in emerging market countries are magnified when the Fund invests in frontier market countries. The increased risks include: the potential for extreme price volatility and illiquidity in frontier market countries; government ownership or control of parts of the private sector and of certain companies; trade barriers, exchange controls, managed adjustments in relative currency values and other protectionist measures imposed or negotiated by the countries with which frontier market countries trade; and the relatively new and unsettled securities laws in many frontier market countries. In addition, frontier market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Many frontier market countries are heavily dependent on international trade, which makes them more sensitive to world commodity prices and economic downturns and other conditions in other countries. Some frontier market countries have a higher risk of currency devaluations, and some of these countries may experience periods of high inflation or rapid changes in inflation rates and may have hostile relations with other countries. Securities issued by foreign governments or companies in frontier market countries are even more likely than emerging markets securities to have greater exposure to the risks of investing in foreign securities.

 

Emerging Markets Memory ETF | Depositary Receipt Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Depositary Receipt Risks. Depositary receipts involve risks similar to those associated with investments in foreign securities and certain additional risks. Depositary receipts listed on U.S. exchanges are issued by banks or trust companies and entitle the holder to all dividends and capital gains that are paid out on the underlying foreign shares (“Underlying Shares”). When the Fund invests in depositary receipts as a substitute for an investment directly in the Underlying Shares, the Fund is exposed to the risk that the depositary receipts may not provide a return that corresponds precisely with that of the Underlying Shares. The Fund may invest in unsponsored depositary receipts. The issuers of unsponsored depositary receipts are not obligated to disclose material information in the United States and, therefore, there may be less information available regarding such issuers and there may not be a correlation between such information and the value of the depositary receipts.

 

Emerging Markets Memory ETF | Currency Exchange Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Currency Exchange Rate Risk. The Fund’s assets may include exposure to investments denominated in non-U.S. currencies or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investments and the value of Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

 

 

Emerging Markets Memory ETF | China Investing Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  China Investing Risks. The Chinese economy is generally considered an emerging market and can be significantly affected by economic and political conditions and policy in China and surrounding Asian countries. A relatively small number of Chinese companies represent a large portion of China’s total market and thus may be more sensitive to adverse political or economic circumstances and market movements. The economy of China differs, often unfavorably, from the U.S. economy in such respects as structure, general development, government involvement, wealth distribution, rate of inflation, growth rate, allocation of resources and capital reinvestment, among others. Prior to August 2022, the Public Company Accounting Oversight Board (“PCAOB”), which regulates auditors of U.S. public companies, had warned that it lacked the ability to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. In August 2022, the PCOAB secured its ability, through a formal agreement with Chinese authorities, to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. The PCAOB’s limited ability to oversee the operations of accounting firms in China and Hong Kong means that inaccurate or incomplete financial records of an issuer’s operations may not be detected, which could negatively impact the Fund’s investments in such companies. Under China’s political and economic system, the central government has historically exercised substantial control over virtually every sector of the Chinese economy through administrative regulation and/or state ownership. The Chinese government strictly regulates the payment of foreign currency denominated obligations and sets monetary policy. The Chinese government may introduce new laws and regulations that could have an adverse effect on the Fund. Although China has begun the process of privatizing certain sectors of its economy, privatized entities may lose money and/or be re-nationalized. In addition, expropriation, including nationalization, confiscatory taxation, political, economic or social instability or other developments could adversely affect and significantly diminish the values of the Chinese companies in which the Fund invests. International trade tensions may arise from time to time which can result in trade tariffs, embargoes, trade limitations, trade wars and other negative consequences. These consequences may trigger a reduction in international trade, the oversupply of certain manufactured goods, substantial price reductions of goods and possible failure of individual companies and/or large segments of China’s export industry with a potentially severe negative impact to the Fund. From time to time and as recently as January 2020, China has experienced outbreaks of infectious illnesses, and the country may be subject to other public health threats or similar issues in the future. Any spread of an infectious illness, public health threat or similar issue could reduce consumer demand or economic output, result in market closures, travel restrictions or quarantines, and generally have a significant impact on the Chinese economy.
Emerging Markets Memory ETF | China A-Shares Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

  o China A-Shares Investment Risk. The liquidity of the A-shares market and trading prices of A-shares could be more severely affected than the liquidity and trading prices of other markets because the Chinese government restricts the flow of capital into and out of the A-shares market. The Fund may experience losses due to illiquidity of the Chinese securities markets or delay or disruption in execution or settlement of trades. The Fund’s investments in A-shares may become subject to frequent and widespread trading halts. In addition, trading through Stock Connect, which is a securities trading and clearing link between the mainland China stock exchanges and the Hong Kong stock exchange, is subject to a number of restrictions that may affect the Fund’s investments and returns. For example, trading through Stock Connect is subject to daily quotas that limit the maximum daily net purchases on any particular day, which may restrict or preclude the Fund’s ability to invest in China A-shares through Stock Connect.

 

  o In addition, investments made through Stock Connect are subject to trading, clearance and settlement procedures that are relatively untested, which could pose risks to the Fund. Moreover, China A-shares purchased through Stock Connect generally may not be sold, purchased or otherwise transferred other than through Stock Connect in accordance with applicable rules. A primary feature of Stock Connect is the application of the home market’s laws and rules applicable to investors in China A-shares. Therefore, the Fund’s investments in China A-shares purchased through Stock Connect are generally subject to Chinese securities regulations and listing rules, among other restrictions. While overseas investors currently are exempt from paying capital gains or value added taxes on income and gains from investments in China A-shares purchased through Stock Connect, these tax rules could be changed, which could result in unexpected tax liabilities for the Fund. Stock Connect only operates on days when the Chinese and Hong Kong stock markets are each open for trading and when banks in each market are open on the corresponding settlement days. The Fund may purchase and sell A-shares through Stock Connect only on days when Stock Connect and U.S. markets are open for trading. Therefore, if it is a normal trading day for the Chinese market but Hong Kong and/or U.S. markets are closed, the Fund will not be able to trade any A-shares. The Fund may be subject to the risk of price fluctuations in A-shares on such days. The Fund is also subject to the risk that it will not be able to buy or sell A-shares in a timely manner on days when the U.S. markets are open but Stock Connect is not. Stock Connect is a relatively new program. Further developments are likely and there can be no assurance as to the program’s continued existence or whether future developments regarding the program may restrict or adversely affect the Fund’s investments or returns. In addition, the application and interpretation of the laws and regulations of Hong Kong and China, and the rules, policies or guidelines published or applied by relevant regulators and exchanges in respect of Stock Connect are uncertain, and they may have a detrimental effect on the Fund’s investments and returns.

 

Emerging Markets Memory ETF | Variable Interest Equity Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

     
  o

Variable Interest Equity Investment Risk. For purposes of raising capital offshore on exchanges outside of China, including on U.S. exchanges, many Chinese-based operating companies are structured as VIEs. In this structure, the Chinese-based operating company is the VIE and establishes a shell company in a foreign jurisdiction, such as the Cayman Islands. The shell company lists on a foreign exchange and enters into contractual arrangements with the VIE. This structure allows Chinese companies in which the government restricts foreign ownership to raise capital from foreign investors. While the shell company has no equity ownership of the VIE, these contractual arrangements permit the shell company to consolidate the VIE’s financial statements with its own for accounting purposes and provide for economic exposure to the performance of the underlying Chinese operating company. Therefore, an investor in the listed shell company, such as the Fund, will have exposure to the Chinese-based operating company only through contractual arrangements and has no ownership in the Chinese-based operating company. Furthermore, because the shell company only has specific rights provided for in these service agreements with the VIE, its abilities to control the activities at the Chinese-based operating company are limited and the operating company may engage in activities that negatively impact investment value.

 

While the VIE structure has been widely adopted, it is not formally recognized under Chinese law and therefore there is a risk that the Chinese government could prohibit the existence of such structures or negatively impact the VIE’s contractual arrangements with the listed shell company by making them invalid. If these contracts were found to be unenforceable under Chinese law, investors in the listed shell company, such as the Fund, may suffer significant losses with little or no recourse available. If the Chinese government determines that the agreements establishing the VIE structures do not comply with Chinese law and regulations, including those related to restrictions on foreign ownership, it could subject a Chinese-based issuer to penalties, revocation of business and operating licenses, or forfeiture of ownership interest. In addition, the listed shell company’s control over a VIE may also be jeopardized if a natural person who holds the equity interest in the VIE breaches the terms of the agreement, is subject to legal proceedings or if any physical instruments for authenticating documentation, such as chops and seals, are used without the Chinese-based issuer’s authorization to enter into contractual arrangements in China. Chops and seals, which are carved stamps used to sign documents, represent a legally binding commitment by the company. Moreover, any future regulatory action may prohibit the ability of the shell company to receive the economic benefits of the Chinese-based operating company, which may cause the value of the Fund’s investment in the listed shell company to suffer a significant loss. For example, in 2021, the Chinese government prohibited use of the VIE structure for investment in after-school tutoring companies. There is no guarantee that the government will not place similar restrictions on other industries.

 

Emerging Markets Memory ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the underlying asset and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:

 

Emerging Markets Memory ETF | Swap Agreements [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Swap Agreements. The use of swap transactions is a highly specialized activity, which involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. Whether the Fund will be successful in using swap agreements to achieve its investment goal depends on the ability of the Adviser to structure such swap agreements in accordance with the Fund’s investment objective and to identify counterparties for those swap agreements. Additionally, any financing, borrowing or other costs associated with using swap transactions may also have the effect of lowering the Fund’s return. The swap agreements in which the Fund invests are generally traded in the over-the-counter market, which generally has less transparency than exchange-traded derivatives instruments. In a standard swap transaction, two parties agree to exchange the return (or differentials in rates of return) earned or realized on particular predetermined reference assets or underlying securities or instruments. The gross return to be exchanged or swapped between the parties is calculated based on a notional amount or the return on or change in value of a particular dollar amount invested in a basket of securities.
     
Emerging Markets Memory ETF | Forward Contracts [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Forward Contracts. A forward contract is a negotiated agreement between two parties to buy or sell an asset, reference instrument, or other financial exposure at a specified price on a specified future date. Forward contracts may be used to obtain or manage exposure to particular securities, markets, sectors, countries, indices, or other investments more efficiently than investing directly in the underlying instruments. Forward contracts are subject to the risk that the value of the contract may not correlate perfectly with the value of the assets, markets, or exposures being hedged or tracked. The use of forward contracts may reduce or eliminate the opportunity for gain if the value of the underlying exposure moves in a direction favorable to the Fund’s position. Because forward contracts are typically privately negotiated and traded in the over-the-counter market, they may be less liquid than exchange-traded instruments and subject the Fund to counterparty risk, which is the risk that the other party to the contract will fail to perform its obligations. Forward contracts also may involve leverage and can result in losses that exceed the amount initially invested. The Fund’s use of forward contracts may increase the volatility of the Fund’s returns and may result in losses if the Sub-Adviser’s investment views or analyses prove incorrect. Unanticipated changes in the value of the underlying reference exposure may result in poorer overall performance for the Fund than if the Fund had not entered into such contracts.

 

Emerging Markets Memory ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in derivatives which exposes the Fund to the risk that the counterparty will not fulfill its obligation to the Fund. Counterparty risk may arise because of the counterparty’s financial condition (i.e., financial difficulties, bankruptcy, or insolvency), market activities and developments, or other reasons, whether foreseen or not. A counterparty’s inability to fulfill its obligation may result in significant financial loss to the Fund and the Fund may be unable to recover its investment from such counterparty or may obtain a limited and/or delayed recovery.

 

Emerging Markets Memory ETF | Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Concentration Risk. The Fund’s investment exposure will be concentrated in the group of industries related to semiconductors and semiconductor equipment, including industries involved in the development, manufacture, and commercialization of memory semiconductors and memory storage technologies. As a result, the value of the Fund’s Shares may rise and fall more than the value of shares that are invested in securities or financial instruments of companies that encompass a broader range of industries.

 

Emerging Markets Memory ETF | Economic and Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.

 

Emerging Markets Memory ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

 

Emerging Markets Memory ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

 

Emerging Markets Memory ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.

 

Emerging Markets Memory ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

 

Emerging Markets Memory ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

 

Emerging Markets Memory ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Trading. Although Shares are listed on a national securities exchange, such as The Nasdaq Stock Market, LLC (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged. As a result, the Fund could be adversely affected and be unable to implement its investment strategies in the event of an unscheduled closing.

 

 

Emerging Markets Memory ETF | Geographic Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Geographic Investment Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region.

 

Emerging Markets Memory ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

 

Emerging Markets Memory ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective. 

 

Emerging Markets Memory ETF | New Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

New Fund Risk. The Fund is a recently organized management investment company with no operating history. As a result, prospective investors do not have a track record or history on which to base their investment decisions.

 

Emerging Markets Memory ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is a recently formed entity and has only limited experience with managing an exchange-traded fund regulated under the 1940 Act. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser’s effectiveness.

 

Emerging Markets Memory ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Advisers seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

 

Emerging Markets Memory ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

 

Emerging Markets Memory ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk

 

Emerging Markets Memory ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

     

Emerging Markets Memory ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
Emerging Markets Memory ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.

 

Emerging Markets Semiconductor ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers.

 

Emerging Markets Semiconductor ETF | Sector Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Sector Risks. To the extent the Fund invests more heavily in particular sectors, its performance will be especially sensitive to developments that significantly affect those sectors. The Fund may invest a significant portion of its assets in the following sectors and, therefore, the performance of the Fund could be negatively impacted by events affecting each of these sectors.

 

Emerging Markets Semiconductor ETF | Information Technology Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Information Technology Sector Risk. The information technology sector includes companies engaged in internet software and services, technology hardware and storage peripherals, electronic equipment instruments and components, and semiconductors and semiconductor equipment, among other things. Information technology companies face intense competition, both domestically and internationally, which may have an adverse effect on profit margins. Information technology companies may have limited product lines, markets, financial resources or personnel. The products of information technology companies may face rapid product obsolescence due to technological developments and frequent new product introduction, unpredictable changes in growth rates and competition for the services of qualified personnel. Failure to introduce new products, develop and maintain a loyal customer base, or achieve general market acceptance for their products could have a material adverse effect on a company’s business. Companies in the information technology sector are heavily dependent on intellectual property and the loss of patent, copyright and trademark protections may adversely affect the profitability of these companies.
     
Emerging Markets Semiconductor ETF | Semiconductors and Semiconductor Equipment Industry Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Semiconductors and Semiconductor Equipment Industry Risk. Semiconductor companies may face intense competition, both domestically and internationally, and such competition may have an adverse effect on their profit margins. Semiconductor companies may have limited product lines, markets, financial resources or personnel. Semiconductor companies’ supply chain and operations are dependent on the availability of materials that meet exacting standards and the use of third parties to provide components and services. Semiconductor companies may rely on a limited number of suppliers, or upon suppliers in a single location, for certain materials, equipment or tools. Finding and qualifying alternate or additional suppliers can be a lengthy process that can cause production delays or impose unforeseen costs, and such alternatives may not be available at all. Production can be disrupted by the unavailability of resources, such as water, silicon, electricity, gases and other materials. Suppliers may also increase prices or encounter cybersecurity or other issues that can disrupt production or increase production costs.

 

Emerging Markets Semiconductor ETF | Foreign Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Foreign Securities Risk. Investments in non-U.S. securities involve risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. There may be less information publicly available about a non-U.S. issuer than a U.S. issuer. Non-U.S. issuers may be subject to different accounting, auditing, financial reporting and investor protection standards than U.S. issuers. Changes to the financial condition or credit rating of foreign issuers may also adversely affect the value of the Fund’s securities. Investments in non-U.S. securities may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. Because legal systems differ, there is also the possibility that it will be difficult to obtain or enforce legal judgments in some countries. Since foreign exchanges may be open on days when the Fund does not price its Shares, the value of the securities in the Fund’s portfolio may change on days when shareholders will not be able to purchase or sell the Fund’s Shares. Conversely, Shares may trade on days when foreign exchanges are closed. Investment in foreign securities may involve higher costs than investment in U.S. securities, including higher transaction and custody costs as well as the imposition of additional taxes by foreign governments. Each of these factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

 

Emerging Markets Semiconductor ETF | Emerging Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Emerging Markets Risk. Investments in securities and instruments traded in developing or emerging markets, or that provide exposure to such securities or markets, can involve additional risks relating to political, economic, or regulatory conditions not associated with investments in U.S. securities and instruments. For example, developing and emerging markets may be subject to (i) greater market volatility, (ii) lower trading volume and liquidity, (iii) greater social, political and economic uncertainty, (iv) governmental controls on foreign investments and limitations on repatriation of invested capital, (v) lower disclosure, corporate governance, auditing and financial reporting standards, (vi) fewer protections of property rights, (vii) restrictions on the transfer of securities or currency, and (viii) settlement and trading practices that differ from those in U.S. markets. Each of these factors may impact the ability of the Fund to buy, sell or otherwise transfer securities, adversely affect the trading market and price for Shares to decline in value.

 

 

Emerging Markets Semiconductor ETF | Frontier Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Frontier Markets Risk. Frontier market countries generally have smaller economies and even less developed capital markets than typical emerging market countries (which themselves have increased investment risk relative to more developed market countries) and, as a result, the Fund’s exposure to risks associated with investing in emerging market countries are magnified when the Fund invests in frontier market countries. The increased risks include: the potential for extreme price volatility and illiquidity in frontier market countries; government ownership or control of parts of the private sector and of certain companies; trade barriers, exchange controls, managed adjustments in relative currency values and other protectionist measures imposed or negotiated by the countries with which frontier market countries trade; and the relatively new and unsettled securities laws in many frontier market countries. In addition, frontier market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Many frontier market countries are heavily dependent on international trade, which makes them more sensitive to world commodity prices and economic downturns and other conditions in other countries. Some frontier market countries have a higher risk of currency devaluations, and some of these countries may experience periods of high inflation or rapid changes in inflation rates and may have hostile relations with other countries. Securities issued by foreign governments or companies in frontier market countries are even more likely than emerging markets securities to have greater exposure to the risks of investing in foreign securities.

 

Emerging Markets Semiconductor ETF | Depositary Receipt Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Depositary Receipt Risks. Depositary receipts involve risks similar to those associated with investments in foreign securities and certain additional risks. Depositary receipts listed on U.S. exchanges are issued by banks or trust companies and entitle the holder to all dividends and capital gains that are paid out on the underlying foreign shares (“Underlying Shares”). When the Fund invests in depositary receipts as a substitute for an investment directly in the Underlying Shares, the Fund is exposed to the risk that the depositary receipts may not provide a return that corresponds precisely with that of the Underlying Shares. The Fund may invest in unsponsored depositary receipts. The issuers of unsponsored depositary receipts are not obligated to disclose material information in the United States and, therefore, there may be less information available regarding such issuers and there may not be a correlation between such information and the value of the depositary receipts.

 

Emerging Markets Semiconductor ETF | Currency Exchange Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Currency Exchange Rate Risk. The Fund’s assets may include exposure to investments denominated in non-U.S. currencies or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investments and the value of Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

 

Emerging Markets Semiconductor ETF | China Investing Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  China Investing Risks. The Chinese economy is generally considered an emerging market and can be significantly affected by economic and political conditions and policy in China and surrounding Asian countries. A relatively small number of Chinese companies represent a large portion of China’s total market and thus may be more sensitive to adverse political or economic circumstances and market movements. The economy of China differs, often unfavorably, from the U.S. economy in such respects as structure, general development, government involvement, wealth distribution, rate of inflation, growth rate, allocation of resources and capital reinvestment, among others. Prior to August 2022, the Public Company Accounting Oversight Board (“PCAOB”), which regulates auditors of U.S. public companies, had warned that it lacked the ability to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. In August 2022, the PCOAB secured its ability, through a formal agreement with Chinese authorities, to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. The PCAOB’s limited ability to oversee the operations of accounting firms in China and Hong Kong means that inaccurate or incomplete financial records of an issuer’s operations may not be detected, which could negatively impact the Fund’s investments in such companies. Under China’s political and economic system, the central government has historically exercised substantial control over virtually every sector of the Chinese economy through administrative regulation and/or state ownership. The Chinese government strictly regulates the payment of foreign currency denominated obligations and sets monetary policy. The Chinese government may introduce new laws and regulations that could have an adverse effect on the Fund. Although China has begun the process of privatizing certain sectors of its economy, privatized entities may lose money and/or be re-nationalized. In addition, expropriation, including nationalization, confiscatory taxation, political, economic or social instability or other developments could adversely affect and significantly diminish the values of the Chinese companies in which the Fund invests. International trade tensions may arise from time to time which can result in trade tariffs, embargoes, trade limitations, trade wars and other negative consequences. These consequences may trigger a reduction in international trade, the oversupply of certain manufactured goods, substantial price reductions of goods and possible failure of individual companies and/or large segments of China’s export industry with a potentially severe negative impact to the Fund. From time to time and as recently as January 2020, China has experienced outbreaks of infectious illnesses, and the country may be subject to other public health threats or similar issues in the future. Any spread of an infectious illness, public health threat or similar issue could reduce consumer demand or economic output, result in market closures, travel restrictions or quarantines, and generally have a significant impact on the Chinese economy.

 

Emerging Markets Semiconductor ETF | China A-Shares Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

  o China A-Shares Investment Risk. The liquidity of the A-shares market and trading prices of A-shares could be more severely affected than the liquidity and trading prices of other markets because the Chinese government restricts the flow of capital into and out of the A-shares market. The Fund may experience losses due to illiquidity of the Chinese securities markets or delay or disruption in execution or settlement of trades. The Fund’s investments in A-shares may become subject to frequent and widespread trading halts. In addition, trading through Stock Connect, which is a securities trading and clearing link between the mainland China stock exchanges and the Hong Kong stock exchange, is subject to a number of restrictions that may affect the Fund’s investments and returns. For example, trading through Stock Connect is subject to daily quotas that limit the maximum daily net purchases on any particular day, which may restrict or preclude the Fund’s ability to invest in China A-shares through Stock Connect.

 

  o In addition, investments made through Stock Connect are subject to trading, clearance and settlement procedures that are relatively untested, which could pose risks to the Fund. Moreover, China A-shares purchased through Stock Connect generally may not be sold, purchased or otherwise transferred other than through Stock Connect in accordance with applicable rules. A primary feature of Stock Connect is the application of the home market’s laws and rules applicable to investors in China A-shares. Therefore, the Fund’s investments in China A-shares purchased through Stock Connect are generally subject to Chinese securities regulations and listing rules, among other restrictions. While overseas investors currently are exempt from paying capital gains or value added taxes on income and gains from investments in China A-shares purchased through Stock Connect, these tax rules could be changed, which could result in unexpected tax liabilities for the Fund. Stock Connect only operates on days when the Chinese and Hong Kong stock markets are each open for trading and when banks in each market are open on the corresponding settlement days. The Fund may purchase and sell A-shares through Stock Connect only on days when Stock Connect and U.S. markets are open for trading. Therefore, if it is a normal trading day for the Chinese market but Hong Kong and/or U.S. markets are closed, the Fund will not be able to trade any A-shares. The Fund may be subject to the risk of price fluctuations in A-shares on such days. The Fund is also subject to the risk that it will not be able to buy or sell A-shares in a timely manner on days when the U.S. markets are open but Stock Connect is not. Stock Connect is a relatively new program. Further developments are likely and there can be no assurance as to the program’s continued existence or whether future developments regarding the program may restrict or adversely affect the Fund’s investments or returns. In addition, the application and interpretation of the laws and regulations of Hong Kong and China, and the rules, policies or guidelines published or applied by relevant regulators and exchanges in respect of Stock Connect are uncertain, and they may have a detrimental effect on the Fund’s investments and returns.
     
Emerging Markets Semiconductor ETF | Variable Interest Equity Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  o

Variable Interest Equity Investment Risk. For purposes of raising capital offshore on exchanges outside of China, including on U.S. exchanges, many Chinese-based operating companies are structured as VIEs. In this structure, the Chinese-based operating company is the VIE and establishes a shell company in a foreign jurisdiction, such as the Cayman Islands. The shell company lists on a foreign exchange and enters into contractual arrangements with the VIE. This structure allows Chinese companies in which the government restricts foreign ownership to raise capital from foreign investors. While the shell company has no equity ownership of the VIE, these contractual arrangements permit the shell company to consolidate the VIE’s financial statements with its own for accounting purposes and provide for economic exposure to the performance of the underlying Chinese operating company. Therefore, an investor in the listed shell company, such as the Fund, will have exposure to the Chinese-based operating company only through contractual arrangements and has no ownership in the Chinese-based operating company. Furthermore, because the shell company only has specific rights provided for in these service agreements with the VIE, its abilities to control the activities at the Chinese-based operating company are limited and the operating company may engage in activities that negatively impact investment value.

 

While the VIE structure has been widely adopted, it is not formally recognized under Chinese law and therefore there is a risk that the Chinese government could prohibit the existence of such structures or negatively impact the VIE’s contractual arrangements with the listed shell company by making them invalid. If these contracts were found to be unenforceable under Chinese law, investors in the listed shell company, such as the Fund, may suffer significant losses with little or no recourse available. If the Chinese government determines that the agreements establishing the VIE structures do not comply with Chinese law and regulations, including those related to restrictions on foreign ownership, it could subject a Chinese-based issuer to penalties, revocation of business and operating licenses, or forfeiture of ownership interest. In addition, the listed shell company’s control over a VIE may also be jeopardized if a natural person who holds the equity interest in the VIE breaches the terms of the agreement, is subject to legal proceedings or if any physical instruments for authenticating documentation, such as chops and seals, are used without the Chinese-based issuer’s authorization to enter into contractual arrangements in China. Chops and seals, which are carved stamps used to sign documents, represent a legally binding commitment by the company. Moreover, any future regulatory action may prohibit the ability of the shell company to receive the economic benefits of the Chinese-based operating company, which may cause the value of the Fund’s investment in the listed shell company to suffer a significant loss. For example, in 2021, the Chinese government prohibited use of the VIE structure for investment in after-school tutoring companies. There is no guarantee that the government will not place similar restrictions on other industries.

 

 

Emerging Markets Semiconductor ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the underlying asset and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:

 

Emerging Markets Semiconductor ETF | Swap Agreements [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Swap Agreements. The use of swap transactions is a highly specialized activity, which involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. Whether the Fund will be successful in using swap agreements to achieve its investment goal depends on the ability of the Adviser to structure such swap agreements in accordance with the Fund’s investment objective and to identify counterparties for those swap agreements. Additionally, any financing, borrowing or other costs associated with using swap transactions may also have the effect of lowering the Fund’s return. The swap agreements in which the Fund invests are generally traded in the over-the-counter market, which generally has less transparency than exchange-traded derivatives instruments. In a standard swap transaction, two parties agree to exchange the return (or differentials in rates of return) earned or realized on particular predetermined reference assets or underlying securities or instruments. The gross return to be exchanged or swapped between the parties is calculated based on a notional amount or the return on or change in value of a particular dollar amount invested in a basket of securities.
     
Emerging Markets Semiconductor ETF | Forward Contracts [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Forward Contracts. A forward contract is a negotiated agreement between two parties to buy or sell an asset, reference instrument, or other financial exposure at a specified price on a specified future date. Forward contracts may be used to obtain or manage exposure to particular securities, markets, sectors, countries, indices, or other investments more efficiently than investing directly in the underlying instruments. Forward contracts are subject to the risk that the value of the contract may not correlate perfectly with the value of the assets, markets, or exposures being hedged or tracked. The use of forward contracts may reduce or eliminate the opportunity for gain if the value of the underlying exposure moves in a direction favorable to the Fund’s position. Because forward contracts are typically privately negotiated and traded in the over-the-counter market, they may be less liquid than exchange-traded instruments and subject the Fund to counterparty risk, which is the risk that the other party to the contract will fail to perform its obligations. Forward contracts also may involve leverage and can result in losses that exceed the amount initially invested. The Fund’s use of forward contracts may increase the volatility of the Fund’s returns and may result in losses if the Sub-Adviser’s investment views or analyses prove incorrect. Unanticipated changes in the value of the underlying reference exposure may result in poorer overall performance for the Fund than if the Fund had not entered into such contracts.

 

Emerging Markets Semiconductor ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in derivatives which exposes the Fund to the risk that the counterparty will not fulfill its obligation to the Fund. Counterparty risk may arise because of the counterparty’s financial condition (i.e., financial difficulties, bankruptcy, or insolvency), market activities and developments, or other reasons, whether foreseen or not. A counterparty’s inability to fulfill its obligation may result in significant financial loss to the Fund and the Fund may be unable to recover its investment from such counterparty or may obtain a limited and/or delayed recovery.

 

 

Emerging Markets Semiconductor ETF | Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Concentration Risk. The Fund’s investment exposure will be concentrated in the group of industries comprising the semiconductors and semiconductor equipment industries, including semiconductor manufacturing, packaging, testing, equipment, and materials industries. As a result, the value of the Fund’s Shares may rise and fall more than the value of shares that are invested in securities or financial instruments of companies that encompass a broader range of industries.

 

Emerging Markets Semiconductor ETF | Economic and Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.

 

Emerging Markets Semiconductor ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

 

Emerging Markets Semiconductor ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

 

 

Emerging Markets Semiconductor ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.

 

Emerging Markets Semiconductor ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

 

Emerging Markets Semiconductor ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

 

Emerging Markets Semiconductor ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Trading. Although Shares are listed on a national securities exchange, such as The Nasdaq Stock Market, LLC (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged. As a result, the Fund could be adversely affected and be unable to implement its investment strategies in the event of an unscheduled closing.

 

Emerging Markets Semiconductor ETF | Geographic Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Geographic Investment Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region.

 

Emerging Markets Semiconductor ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

 

Emerging Markets Semiconductor ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective. 

 

Emerging Markets Semiconductor ETF | New Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

New Fund Risk. The Fund is a recently organized management investment company with no operating history. As a result, prospective investors do not have a track record or history on which to base their investment decisions.

 

Emerging Markets Semiconductor ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is a recently formed entity and has only limited experience with managing an exchange-traded fund regulated under the 1940 Act. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser’s effectiveness.

 

Emerging Markets Semiconductor ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Advisers seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

 

Emerging Markets Semiconductor ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

 

Emerging Markets Semiconductor ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk

 

Emerging Markets Semiconductor ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

 

Emerging Markets Semiconductor ETF | Small-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Small-Capitalization Investing. The securities of small-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large- or mid-capitalization companies. The securities of small-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large- or mid-capitalization stocks or the stock market as a whole. There is typically less publicly available information concerning smaller-capitalization companies than for larger, more established companies.

 

Emerging Markets Semiconductor ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
Emerging Markets Semiconductor ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.

 

China AI Tigers LLM ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers.

 

China AI Tigers LLM ETF | Artificial Intelligence Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Artificial Intelligence Risk. Issuers engaged in artificial intelligence typically have high research and capital expenditures and, as a result, their profitability can vary widely, if they are profitable at all. The space in which they are engaged is highly competitive and issuers’ products and services may become obsolete very quickly. These companies are heavily dependent on intellectual property rights and may be adversely affected by loss or impairment of those rights. The issuers are also subject to legal, regulatory and political changes that may have a large impact on their profitability. A failure in an issuer’s product or even questions about the safety of the product could be devastating to the issuer, especially if it is the marquee product of the issuer. It can be difficult to accurately capture what qualifies as an artificial intelligence company.

 

China AI Tigers LLM ETF | Sector Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Sector Risks. To the extent the Fund invests more heavily in particular sectors, its performance will be especially sensitive to developments that significantly affect those sectors. The Fund may invest a significant portion of its assets in the following sectors and, therefore, the performance of the Fund could be negatively impacted by events affecting each of these sectors.

 

China AI Tigers LLM ETF | Information Technology Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Information Technology Sector Risk. The information technology sector includes companies engaged in internet software and services, technology hardware and storage peripherals, electronic equipment instruments and components, and semiconductors and semiconductor equipment, among other things. Information technology companies face intense competition, both domestically and internationally, which may have an adverse effect on profit margins. Information technology companies may have limited product lines, markets, financial resources or personnel. The products of information technology companies may face rapid product obsolescence due to technological developments and frequent new product introduction, unpredictable changes in growth rates and competition for the services of qualified personnel. Failure to introduce new products, develop and maintain a loyal customer base, or achieve general market acceptance for their products could have a material adverse effect on a company’s business. Companies in the information technology sector are heavily dependent on intellectual property and the loss of patent, copyright and trademark protections may adversely affect the profitability of these companies.
     
China AI Tigers LLM ETF | Consumer Discretionary Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 

Consumer Discretionary Sector Risk. The consumer discretionary sector may be affected by changes in domestic and international economies, exchange and interest rates, competition, consumers’ disposable income, consumer preferences, social trends and marketing campaigns.

 

China AI Tigers LLM ETF | Communications Services Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Communications Services Sector Risk. Companies in the Communications Services Sector are subject to extensive government regulation. The costs of complying with governmental regulations, delays or failure to receive required regulatory approvals, or the enactment of new adverse regulatory requirements may adversely affect the business of such companies. Companies in the Communications Services Sector also can be significantly affected by intense competition, including competition with alternative technologies such as wireless communications (including with 5G and other technologies), product compatibility, consumer preferences, rapid product obsolescence, and research and development of new products. Technological innovations may make the products and services of such companies obsolete. Media content creation carries risks of changing consumer tastes and running afoul of regulatory content guidelines, which could result in large fines or the loss of regulatory licenses. Media companies collect significant amounts of personal consumer data and are at risk of data breaches and fines for the unauthorized and unplanned public release of sensitive consumer data.
     
China AI Tigers LLM ETF | Foreign Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Foreign Securities Risk. Investments in non-U.S. securities involve risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. There may be less information publicly available about a non-U.S. issuer than a U.S. issuer. Non-U.S. issuers may be subject to different accounting, auditing, financial reporting and investor protection standards than U.S. issuers. Changes to the financial condition or credit rating of foreign issuers may also adversely affect the value of the Fund’s securities. Investments in non-U.S. securities may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. Because legal systems differ, there is also the possibility that it will be difficult to obtain or enforce legal judgments in some countries. Since foreign exchanges may be open on days when the Fund does not price its Shares, the value of the securities in the Fund’s portfolio may change on days when shareholders will not be able to purchase or sell the Fund’s Shares. Conversely, Shares may trade on days when foreign exchanges are closed. Investment in foreign securities may involve higher costs than investment in U.S. securities, including higher transaction and custody costs as well as the imposition of additional taxes by foreign governments. Each of these factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

 

China AI Tigers LLM ETF | Depositary Receipt Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Depositary Receipt Risks. Depositary receipts involve risks similar to those associated with investments in foreign securities and certain additional risks. Depositary receipts listed on U.S. exchanges are issued by banks or trust companies and entitle the holder to all dividends and capital gains that are paid out on the underlying foreign shares (“Underlying Shares”). When the Fund invests in depositary receipts as a substitute for an investment directly in the Underlying Shares, the Fund is exposed to the risk that the depositary receipts may not provide a return that corresponds precisely with that of the Underlying Shares. The Fund may invest in unsponsored depositary receipts. The issuers of unsponsored depositary receipts are not obligated to disclose material information in the United States and, therefore, there may be less information available regarding such issuers and there may not be a correlation between such information and the value of the depositary receipts.

 

China AI Tigers LLM ETF | Currency Exchange Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Currency Exchange Rate Risk. The Fund’s assets may include exposure to investments denominated in non-U.S. currencies or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investments and the value of Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

 

China AI Tigers LLM ETF | China Investing Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  China Investing Risks. The Chinese economy is generally considered an emerging market and can be significantly affected by economic and political conditions and policy in China and surrounding Asian countries. A relatively small number of Chinese companies represent a large portion of China’s total market and thus may be more sensitive to adverse political or economic circumstances and market movements. The economy of China differs, often unfavorably, from the U.S. economy in such respects as structure, general development, government involvement, wealth distribution, rate of inflation, growth rate, allocation of resources and capital reinvestment, among others. Prior to August 2022, the Public Company Accounting Oversight Board (“PCAOB”), which regulates auditors of U.S. public companies, had warned that it lacked the ability to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. In August 2022, the PCOAB secured its ability, through a formal agreement with Chinese authorities, to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. The PCAOB’s limited ability to oversee the operations of accounting firms in China and Hong Kong means that inaccurate or incomplete financial records of an issuer’s operations may not be detected, which could negatively impact the Fund’s investments in such companies. Under China’s political and economic system, the central government has historically exercised substantial control over virtually every sector of the Chinese economy through administrative regulation and/or state ownership. The Chinese government strictly regulates the payment of foreign currency denominated obligations and sets monetary policy. The Chinese government may introduce new laws and regulations that could have an adverse effect on the Fund. Although China has begun the process of privatizing certain sectors of its economy, privatized entities may lose money and/or be re-nationalized. In addition, expropriation, including nationalization, confiscatory taxation, political, economic or social instability or other developments could adversely affect and significantly diminish the values of the Chinese companies in which the Fund invests. International trade tensions may arise from time to time which can result in trade tariffs, embargoes, trade limitations, trade wars and other negative consequences. These consequences may trigger a reduction in international trade, the oversupply of certain manufactured goods, substantial price reductions of goods and possible failure of individual companies and/or large segments of China’s export industry with a potentially severe negative impact to the Fund. From time to time and as recently as January 2020, China has experienced outbreaks of infectious illnesses, and the country may be subject to other public health threats or similar issues in the future. Any spread of an infectious illness, public health threat or similar issue could reduce consumer demand or economic output, result in market closures, travel restrictions or quarantines, and generally have a significant impact on the Chinese economy.
China AI Tigers LLM ETF | China A-Shares Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

     
  o China A-Shares Investment Risk. The liquidity of the A-shares market and trading prices of A-shares could be more severely affected than the liquidity and trading prices of other markets because the Chinese government restricts the flow of capital into and out of the A-shares market. The Fund may experience losses due to illiquidity of the Chinese securities markets or delay or disruption in execution or settlement of trades. The Fund’s investments in A-shares may become subject to frequent and widespread trading halts. In addition, trading through Stock Connect, which is a securities trading and clearing link between the mainland China stock exchanges and the Hong Kong stock exchange, is subject to a number of restrictions that may affect the Fund’s investments and returns. For example, trading through Stock Connect is subject to daily quotas that limit the maximum daily net purchases on any particular day, which may restrict or preclude the Fund’s ability to invest in China A-shares through Stock Connect.

 

 

     
  o In addition, investments made through Stock Connect are subject to trading, clearance and settlement procedures that are relatively untested, which could pose risks to the Fund. Moreover, China A-shares purchased through Stock Connect generally may not be sold, purchased or otherwise transferred other than through Stock Connect in accordance with applicable rules. A primary feature of Stock Connect is the application of the home market’s laws and rules applicable to investors in China A-shares. Therefore, the Fund’s investments in China A-shares purchased through Stock Connect are generally subject to Chinese securities regulations and listing rules, among other restrictions. While overseas investors currently are exempt from paying capital gains or value added taxes on income and gains from investments in China A-shares purchased through Stock Connect, these tax rules could be changed, which could result in unexpected tax liabilities for the Fund. Stock Connect only operates on days when the Chinese and Hong Kong stock markets are each open for trading and when banks in each market are open on the corresponding settlement days. The Fund may purchase and sell A-shares through Stock Connect only on days when Stock Connect and U.S. markets are open for trading. Therefore, if it is a normal trading day for the Chinese market but Hong Kong and/or U.S. markets are closed, the Fund will not be able to trade any A-shares. The Fund may be subject to the risk of price fluctuations in A-shares on such days. The Fund is also subject to the risk that it will not be able to buy or sell A-shares in a timely manner on days when the U.S. markets are open but Stock Connect is not. Stock Connect is a relatively new program. Further developments are likely and there can be no assurance as to the program’s continued existence or whether future developments regarding the program may restrict or adversely affect the Fund’s investments or returns. In addition, the application and interpretation of the laws and regulations of Hong Kong and China, and the rules, policies or guidelines published or applied by relevant regulators and exchanges in respect of Stock Connect are uncertain, and they may have a detrimental effect on the Fund’s investments and returns.
China AI Tigers LLM ETF | Variable Interest Equity Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  o

Variable Interest Equity Investment Risk. For purposes of raising capital offshore on exchanges outside of China, including on U.S. exchanges, many Chinese-based operating companies are structured as VIEs. In this structure, the Chinese-based operating company is the VIE and establishes a shell company in a foreign jurisdiction, such as the Cayman Islands. The shell company lists on a foreign exchange and enters into contractual arrangements with the VIE. This structure allows Chinese companies in which the government restricts foreign ownership to raise capital from foreign investors. While the shell company has no equity ownership of the VIE, these contractual arrangements permit the shell company to consolidate the VIE’s financial statements with its own for accounting purposes and provide for economic exposure to the performance of the underlying Chinese operating company. Therefore, an investor in the listed shell company, such as the Fund, will have exposure to the Chinese-based operating company only through contractual arrangements and has no ownership in the Chinese-based operating company. Furthermore, because the shell company only has specific rights provided for in these service agreements with the VIE, its abilities to control the activities at the Chinese-based operating company are limited and the operating company may engage in activities that negatively impact investment value.

 

 

   

While the VIE structure has been widely adopted, it is not formally recognized under Chinese law and therefore there is a risk that the Chinese government could prohibit the existence of such structures or negatively impact the VIE’s contractual arrangements with the listed shell company by making them invalid. If these contracts were found to be unenforceable under Chinese law, investors in the listed shell company, such as the Fund, may suffer significant losses with little or no recourse available. If the Chinese government determines that the agreements establishing the VIE structures do not comply with Chinese law and regulations, including those related to restrictions on foreign ownership, it could subject a Chinese-based issuer to penalties, revocation of business and operating licenses, or forfeiture of ownership interest. In addition, the listed shell company’s control over a VIE may also be jeopardized if a natural person who holds the equity interest in the VIE breaches the terms of the agreement, is subject to legal proceedings or if any physical instruments for authenticating documentation, such as chops and seals, are used without the Chinese-based issuer’s authorization to enter into contractual arrangements in China. Chops and seals, which are carved stamps used to sign documents, represent a legally binding commitment by the company. Moreover, any future regulatory action may prohibit the ability of the shell company to receive the economic benefits of the Chinese-based operating company, which may cause the value of the Fund’s investment in the listed shell company to suffer a significant loss. For example, in 2021, the Chinese government prohibited use of the VIE structure for investment in after-school tutoring companies. There is no guarantee that the government will not place similar restrictions on other industries.

 

China AI Tigers LLM ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the underlying asset and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:

 

China AI Tigers LLM ETF | Swap Agreements [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Swap Agreements. The use of swap transactions is a highly specialized activity, which involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. Whether the Fund will be successful in using swap agreements to achieve its investment goal depends on the ability of the Adviser to structure such swap agreements in accordance with the Fund’s investment objective and to identify counterparties for those swap agreements. Additionally, any financing, borrowing or other costs associated with using swap transactions may also have the effect of lowering the Fund’s return. The swap agreements in which the Fund invests are generally traded in the over-the-counter market, which generally has less transparency than exchange-traded derivatives instruments. In a standard swap transaction, two parties agree to exchange the return (or differentials in rates of return) earned or realized on particular predetermined reference assets or underlying securities or instruments. The gross return to be exchanged or swapped between the parties is calculated based on a notional amount or the return on or change in value of a particular dollar amount invested in a basket of securities.

 

 

China AI Tigers LLM ETF | Forward Contracts [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Forward Contracts. A forward contract is a negotiated agreement between two parties to buy or sell an asset, reference instrument, or other financial exposure at a specified price on a specified future date. Forward contracts may be used to obtain or manage exposure to particular securities, markets, sectors, countries, indices, or other investments more efficiently than investing directly in the underlying instruments. Forward contracts are subject to the risk that the value of the contract may not correlate perfectly with the value of the assets, markets, or exposures being hedged or tracked. The use of forward contracts may reduce or eliminate the opportunity for gain if the value of the underlying exposure moves in a direction favorable to the Fund’s position. Because forward contracts are typically privately negotiated and traded in the over-the-counter market, they may be less liquid than exchange-traded instruments and subject the Fund to counterparty risk, which is the risk that the other party to the contract will fail to perform its obligations. Forward contracts also may involve leverage and can result in losses that exceed the amount initially invested. The Fund’s use of forward contracts may increase the volatility of the Fund’s returns and may result in losses if the Sub-Adviser’s investment views or analyses prove incorrect. Unanticipated changes in the value of the underlying reference exposure may result in poorer overall performance for the Fund than if the Fund had not entered into such contracts.

 

China AI Tigers LLM ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in derivatives which exposes the Fund to the risk that the counterparty will not fulfill its obligation to the Fund. Counterparty risk may arise because of the counterparty’s financial condition (i.e., financial difficulties, bankruptcy, or insolvency), market activities and developments, or other reasons, whether foreseen or not. A counterparty’s inability to fulfill its obligation may result in significant financial loss to the Fund and the Fund may be unable to recover its investment from such counterparty or may obtain a limited and/or delayed recovery.

 

 

China AI Tigers LLM ETF | Economic and Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.

 

China AI Tigers LLM ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

 

China AI Tigers LLM ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

 

China AI Tigers LLM ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.

 

China AI Tigers LLM ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

 

China AI Tigers LLM ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

 

China AI Tigers LLM ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Trading. Although Shares are listed on a national securities exchange, such as The Nasdaq Stock Market, LLC (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged. As a result, the Fund could be adversely affected and be unable to implement its investment strategies in the event of an unscheduled closing.

 

China AI Tigers LLM ETF | Geographic Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Geographic Investment Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region.

 

 

China AI Tigers LLM ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

 

China AI Tigers LLM ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective. 

 

China AI Tigers LLM ETF | New Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

New Fund Risk. The Fund is a recently organized management investment company with no operating history. As a result, prospective investors do not have a track record or history on which to base their investment decisions.

 

China AI Tigers LLM ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is a recently formed entity and has only limited experience with managing an exchange-traded fund regulated under the 1940 Act. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser’s effectiveness.

 

China AI Tigers LLM ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Advisers seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

 

China AI Tigers LLM ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

 

China AI Tigers LLM ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk

 

China AI Tigers LLM ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

 

China AI Tigers LLM ETF | Small-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Small-Capitalization Investing. The securities of small-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large- or mid-capitalization companies. The securities of small-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large- or mid-capitalization stocks or the stock market as a whole. There is typically less publicly available information concerning smaller-capitalization companies than for larger, more established companies.

 

China AI Tigers LLM ETF | Generative AI Industry Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Generative AI Industry Risk.  Companies involved in, or exposed to, generative artificial intelligence-related businesses may have limited product lines, markets, financial resources or personnel. These companies face intense competition and potentially rapid product obsolescence, and many depend significantly on retaining and growing the consumer base of their respective products and services. Many of these companies are also reliant on the end user demand of products and services in various industries that may in part utilize AI. Further, many companies involved in, or exposed to, generative AI-related businesses may be substantially exposed to the market and business risks of other industries or sectors, and the Fund may be adversely affected by negative developments impacting those companies, industries or sectors. In addition, these companies are heavily dependent on intellectual property rights and may be adversely affected by loss or impairment of those rights. There can be no assurance that companies involved in generative AI will be able to successfully protect their intellectual property to prevent the misappropriation of their technology, or that competitors will not develop technology that is substantially similar or superior to such companies’ technology. Generative AI Companies are potential targets for cyberattacks, which can have a materially adverse impact on the performance of these companies. In addition, the collection of data from consumers and other sources could face increased scrutiny as regulators consider how the data is collected, stored, safeguarded and used. Generative AI Companies may face regulatory fines and penalties, including potential forced break-ups, that could hinder the ability of the companies to operate on an ongoing basis. Generative AI Companies typically engage in significant amounts of spending on research and development, and there is no guarantee that the products or services produced by these companies will be successful. Generative AI Companies, especially smaller companies, tend to be more volatile than companies that do not rely heavily on technology. AI technology could face increasing regulatory scrutiny in the future, which may limit the development of this technology and impede the growth of companies that develop and/or utilize this technology.

 

 

China AI Tigers LLM ETF | Custody Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

     
  o

Custody Risk. Investments in emerging markets, such as China, may be subject to even greater custody risks than investments in more developed markets. Less developed markets are more likely to experience problems with the clearing and settling of trades and the holding of securities by local banks, agents and depositories. In accordance with Chinese regulations and the terms of a QFII or RQFII license, as applicable, and insofar as the Adviser acquires a QFII or RQFII license, A-Shares will be held in the joint names of the Fund and the Adviser. While the Adviser may not use such an account for any purpose other than for maintaining the Fund’s assets, the Fund’s assets may not be as well protected as they would be if it were possible for them to be registered and held solely in the name of the Fund. There is a risk that creditors of the Adviser may assert that the securities are owned by the Adviser and that regulatory actions taken against Adviser may affect the Fund. The risk is particularly acute in the case of cash deposited with a People’s Republic of China (“PRC”) sub-custodian (“PRC Custodian”) because it may not be segregated, and it may be treated as a debt owing from the PRC Custodian to the Fund as a depositor. Thus, in the event of a PRC Custodian bankruptcy, liquidation, or similar event, the Fund may face difficulties and/or encounter delays in recovering its cash.

 

China AI Tigers LLM ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
China AI Tigers LLM ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.

 

China AI ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers.

 

China AI ETF | Artificial Intelligence Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Artificial Intelligence Risk. Issuers engaged in artificial intelligence typically have high research and capital expenditures and, as a result, their profitability can vary widely, if they are profitable at all. The space in which they are engaged is highly competitive and issuers’ products and services may become obsolete very quickly. These companies are heavily dependent on intellectual property rights and may be adversely affected by loss or impairment of those rights. The issuers are also subject to legal, regulatory and political changes that may have a large impact on their profitability. A failure in an issuer’s product or even questions about the safety of the product could be devastating to the issuer, especially if it is the marquee product of the issuer. It can be difficult to accurately capture what qualifies as an artificial intelligence company.

 

China AI ETF | Sector Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Sector Risks. To the extent the Fund invests more heavily in particular sectors, its performance will be especially sensitive to developments that significantly affect those sectors. The Fund may invest a significant portion of its assets in the following sectors and, therefore, the performance of the Fund could be negatively impacted by events affecting each of these sectors.

 

China AI ETF | Information Technology Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Information Technology Sector Risk. The information technology sector includes companies engaged in internet software and services, technology hardware and storage peripherals, electronic equipment instruments and components, and semiconductors and semiconductor equipment, among other things. Information technology companies face intense competition, both domestically and internationally, which may have an adverse effect on profit margins. Information technology companies may have limited product lines, markets, financial resources or personnel. The products of information technology companies may face rapid product obsolescence due to technological developments and frequent new product introduction, unpredictable changes in growth rates and competition for the services of qualified personnel. Failure to introduce new products, develop and maintain a loyal customer base, or achieve general market acceptance for their products could have a material adverse effect on a company’s business. Companies in the information technology sector are heavily dependent on intellectual property and the loss of patent, copyright and trademark protections may adversely affect the profitability of these companies.

 

China AI ETF | Semiconductors and Semiconductor Equipment Industry Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Semiconductors and Semiconductor Equipment Industry Risk. Semiconductor companies may face intense competition, both domestically and internationally, and such competition may have an adverse effect on their profit margins. Semiconductor companies may have limited product lines, markets, financial resources or personnel. Semiconductor companies’ supply chain and operations are dependent on the availability of materials that meet exacting standards and the use of third parties to provide components and services. Semiconductor companies may rely on a limited number of suppliers, or upon suppliers in a single location, for certain materials, equipment or tools. Finding and qualifying alternate or additional suppliers can be a lengthy process that can cause production delays or impose unforeseen costs, and such alternatives may not be available at all. Production can be disrupted by the unavailability of resources, such as water, silicon, electricity, gases and other materials. Suppliers may also increase prices or encounter cybersecurity or other issues that can disrupt production or increase production costs.

 

China AI ETF | Consumer Discretionary Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Consumer Discretionary Sector Risk. The consumer discretionary sector may be affected by changes in domestic and international economies, exchange and interest rates, competition, consumers’ disposable income, consumer preferences, social trends and marketing campaigns.

 

 

China AI ETF | Utilities Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Utilities Sector Risk. Utility companies are affected by supply and demand, operating costs, government regulation, environmental factors, liabilities for environmental damage and general civil liabilities, and rate caps or rate changes. Although rate changes of a regulated utility usually fluctuate in approximate correlation with financing costs, due to political and regulatory factors rate changes ordinarily occur only following a delay after the changes in financing costs. This factor will tend to favorably affect a regulated utility company's earnings and dividends in times of decreasing costs, but conversely, will tend to adversely affect earnings and dividends when costs are rising. The value of regulated utility equity securities may tend to have an inverse relationship to the movement of interest rates. Certain utility companies have experienced full or partial deregulation in recent years. These utility companies are frequently more similar to industrial companies in that they are subject to greater competition and have been permitted by regulators to diversify outside of their original geographic regions and their traditional lines of business. These opportunities may permit certain utility companies to earn more than their traditional regulated rates of return. Some companies, however, may be forced to defend their core business and may be less profitable. In addition, natural disasters, terrorist attacks, government intervention or other factors may render a utility company's equipment unusable or obsolete and negatively impact profitability.

 

China AI ETF | Energy Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Energy Sector Risk. Energy companies may be adversely affected by fluctuations in energy prices, supply and demand, commodity markets, geopolitical events, regulatory developments, environmental considerations, and capital spending requirements. Energy infrastructure and power-generation companies may require substantial ongoing investment and may be subject to operational, permitting, and financing risks.

 

China AI ETF | Communications Services Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Communications Services Sector Risk. Companies in the Communications Services Sector are subject to extensive government regulation. The costs of complying with governmental regulations, delays or failure to receive required regulatory approvals, or the enactment of new adverse regulatory requirements may adversely affect the business of such companies. Companies in the Communications Services Sector also can be significantly affected by intense competition, including competition with alternative technologies such as wireless communications (including with 5G and other technologies), product compatibility, consumer preferences, rapid product obsolescence, and research and development of new products. Technological innovations may make the products and services of such companies obsolete. Media content creation carries risks of changing consumer tastes and running afoul of regulatory content guidelines, which could result in large fines or the loss of regulatory licenses. Media companies collect significant amounts of personal consumer data and are at risk of data breaches and fines for the unauthorized and unplanned public release of sensitive consumer data.

 

China AI ETF | Industrials Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Industrials Sector Risk. Companies in the Industrials Sector can be significantly affected by supply and demand for specific products or services and for Industrials Sector products in general; a decline in demand for products due to rapid technological developments and frequent new product introduction; government regulation, world events and economic conditions; and the risks associated with potential environmental damage and product liability claims.

 

China AI ETF | Foreign Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Foreign Securities Risk. Investments in non-U.S. securities involve risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. There may be less information publicly available about a non-U.S. issuer than a U.S. issuer. Non-U.S. issuers may be subject to different accounting, auditing, financial reporting and investor protection standards than U.S. issuers. Changes to the financial condition or credit rating of foreign issuers may also adversely affect the value of the Fund’s securities. Investments in non-U.S. securities may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. Because legal systems differ, there is also the possibility that it will be difficult to obtain or enforce legal judgments in some countries. Since foreign exchanges may be open on days when the Fund does not price its Shares, the value of the securities in the Fund’s portfolio may change on days when shareholders will not be able to purchase or sell the Fund’s Shares. Conversely, Shares may trade on days when foreign exchanges are closed. Investment in foreign securities may involve higher costs than investment in U.S. securities, including higher transaction and custody costs as well as the imposition of additional taxes by foreign governments. Each of these factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

 

 

China AI ETF | Depositary Receipt Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Depositary Receipt Risks. Depositary receipts involve risks similar to those associated with investments in foreign securities and certain additional risks. Depositary receipts listed on U.S. exchanges are issued by banks or trust companies and entitle the holder to all dividends and capital gains that are paid out on the underlying foreign shares (“Underlying Shares”). When the Fund invests in depositary receipts as a substitute for an investment directly in the Underlying Shares, the Fund is exposed to the risk that the depositary receipts may not provide a return that corresponds precisely with that of the Underlying Shares. The Fund may invest in unsponsored depositary receipts. The issuers of unsponsored depositary receipts are not obligated to disclose material information in the United States and, therefore, there may be less information available regarding such issuers and there may not be a correlation between such information and the value of the depositary receipts.
     
China AI ETF | Currency Exchange Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Currency Exchange Rate Risk. The Fund’s assets may include exposure to investments denominated in non-U.S. currencies or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investments and the value of Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

 

China AI ETF | China Investing Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  China Investing Risks. The Chinese economy is generally considered an emerging market and can be significantly affected by economic and political conditions and policy in China and surrounding Asian countries. A relatively small number of Chinese companies represent a large portion of China’s total market and thus may be more sensitive to adverse political or economic circumstances and market movements. The economy of China differs, often unfavorably, from the U.S. economy in such respects as structure, general development, government involvement, wealth distribution, rate of inflation, growth rate, allocation of resources and capital reinvestment, among others. Prior to August 2022, the Public Company Accounting Oversight Board (“PCAOB”), which regulates auditors of U.S. public companies, had warned that it lacked the ability to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. In August 2022, the PCOAB secured its ability, through a formal agreement with Chinese authorities, to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. The PCAOB’s limited ability to oversee the operations of accounting firms in China and Hong Kong means that inaccurate or incomplete financial records of an issuer’s operations may not be detected, which could negatively impact the Fund’s investments in such companies. Under China’s political and economic system, the central government has historically exercised substantial control over virtually every sector of the Chinese economy through administrative regulation and/or state ownership. The Chinese government strictly regulates the payment of foreign currency denominated obligations and sets monetary policy. The Chinese government may introduce new laws and regulations that could have an adverse effect on the Fund. Although China has begun the process of privatizing certain sectors of its economy, privatized entities may lose money and/or be re-nationalized. In addition, expropriation, including nationalization, confiscatory taxation, political, economic or social instability or other developments could adversely affect and significantly diminish the values of the Chinese companies in which the Fund invests. International trade tensions may arise from time to time which can result in trade tariffs, embargoes, trade limitations, trade wars and other negative consequences. These consequences may trigger a reduction in international trade, the oversupply of certain manufactured goods, substantial price reductions of goods and possible failure of individual companies and/or large segments of China’s export industry with a potentially severe negative impact to the Fund. From time to time and as recently as January 2020, China has experienced outbreaks of infectious illnesses, and the country may be subject to other public health threats or similar issues in the future. Any spread of an infectious illness, public health threat or similar issue could reduce consumer demand or economic output, result in market closures, travel restrictions or quarantines, and generally have a significant impact on the Chinese economy.
China AI ETF | China A-Shares Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

     
  o China A-Shares Investment Risk. The liquidity of the A-shares market and trading prices of A-shares could be more severely affected than the liquidity and trading prices of other markets because the Chinese government restricts the flow of capital into and out of the A-shares market. The Fund may experience losses due to illiquidity of the Chinese securities markets or delay or disruption in execution or settlement of trades. The Fund’s investments in A-shares may become subject to frequent and widespread trading halts. In addition, trading through Stock Connect, which is a securities trading and clearing link between the mainland China stock exchanges and the Hong Kong stock exchange, is subject to a number of restrictions that may affect the Fund’s investments and returns. For example, trading through Stock Connect is subject to daily quotas that limit the maximum daily net purchases on any particular day, which may restrict or preclude the Fund’s ability to invest in China A-shares through Stock Connect.
     
  o In addition, investments made through Stock Connect are subject to trading, clearance and settlement procedures that are relatively untested, which could pose risks to the Fund. Moreover, China A-shares purchased through Stock Connect generally may not be sold, purchased or otherwise transferred other than through Stock Connect in accordance with applicable rules. A primary feature of Stock Connect is the application of the home market’s laws and rules applicable to investors in China A-shares. Therefore, the Fund’s investments in China A-shares purchased through Stock Connect are generally subject to Chinese securities regulations and listing rules, among other restrictions. While overseas investors currently are exempt from paying capital gains or value added taxes on income and gains from investments in China A-shares purchased through Stock Connect, these tax rules could be changed, which could result in unexpected tax liabilities for the Fund. Stock Connect only operates on days when the Chinese and Hong Kong stock markets are each open for trading and when banks in each market are open on the corresponding settlement days. The Fund may purchase and sell A-shares through Stock Connect only on days when Stock Connect and U.S. markets are open for trading. Therefore, if it is a normal trading day for the Chinese market but Hong Kong and/or U.S. markets are closed, the Fund will not be able to trade any A-shares. The Fund may be subject to the risk of price fluctuations in A-shares on such days. The Fund is also subject to the risk that it will not be able to buy or sell A-shares in a timely manner on days when the U.S. markets are open but Stock Connect is not. Stock Connect is a relatively new program. Further developments are likely and there can be no assurance as to the program’s continued existence or whether future developments regarding the program may restrict or adversely affect the Fund’s investments or returns. In addition, the application and interpretation of the laws and regulations of Hong Kong and China, and the rules, policies or guidelines published or applied by relevant regulators and exchanges in respect of Stock Connect are uncertain, and they may have a detrimental effect on the Fund’s investments and returns.

 

 

China AI ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the underlying asset and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:

 

China AI ETF | Swap Agreements [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Swap Agreements. The use of swap transactions is a highly specialized activity, which involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. Whether the Fund will be successful in using swap agreements to achieve its investment goal depends on the ability of the Adviser to structure such swap agreements in accordance with the Fund’s investment objective and to identify counterparties for those swap agreements. Additionally, any financing, borrowing or other costs associated with using swap transactions may also have the effect of lowering the Fund’s return. The swap agreements in which the Fund invests are generally traded in the over-the-counter market, which generally has less transparency than exchange-traded derivatives instruments. In a standard swap transaction, two parties agree to exchange the return (or differentials in rates of return) earned or realized on particular predetermined reference assets or underlying securities or instruments. The gross return to be exchanged or swapped between the parties is calculated based on a notional amount or the return on or change in value of a particular dollar amount invested in a basket of securities.

 

China AI ETF | Forward Contracts [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Forward Contracts. A forward contract is a negotiated agreement between two parties to buy or sell an asset, reference instrument, or other financial exposure at a specified price on a specified future date. Forward contracts may be used to obtain or manage exposure to particular securities, markets, sectors, countries, indices, or other investments more efficiently than investing directly in the underlying instruments. Forward contracts are subject to the risk that the value of the contract may not correlate perfectly with the value of the assets, markets, or exposures being hedged or tracked. The use of forward contracts may reduce or eliminate the opportunity for gain if the value of the underlying exposure moves in a direction favorable to the Fund’s position. Because forward contracts are typically privately negotiated and traded in the over-the-counter market, they may be less liquid than exchange-traded instruments and subject the Fund to counterparty risk, which is the risk that the other party to the contract will fail to perform its obligations. Forward contracts also may involve leverage and can result in losses that exceed the amount initially invested. The Fund’s use of forward contracts may increase the volatility of the Fund’s returns and may result in losses if the Sub-Adviser’s investment views or analyses prove incorrect. Unanticipated changes in the value of the underlying reference exposure may result in poorer overall performance for the Fund than if the Fund had not entered into such contracts.

 

China AI ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in derivatives which exposes the Fund to the risk that the counterparty will not fulfill its obligation to the Fund. Counterparty risk may arise because of the counterparty’s financial condition (i.e., financial difficulties, bankruptcy, or insolvency), market activities and developments, or other reasons, whether foreseen or not. A counterparty’s inability to fulfill its obligation may result in significant financial loss to the Fund and the Fund may be unable to recover its investment from such counterparty or may obtain a limited and/or delayed recovery.

 

China AI ETF | Economic and Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.

 

China AI ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

 

China AI ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

 

China AI ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.

 

China AI ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

 

China AI ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

 

China AI ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Trading. Although Shares are listed on a national securities exchange, such as The Nasdaq Stock Market, LLC (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged. As a result, the Fund could be adversely affected and be unable to implement its investment strategies in the event of an unscheduled closing.

 

China AI ETF | Geographic Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Geographic Investment Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region.

 

China AI ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

 

China AI ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective. 

 

China AI ETF | New Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

New Fund Risk. The Fund is a recently organized management investment company with no operating history. As a result, prospective investors do not have a track record or history on which to base their investment decisions.

 

China AI ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is a recently formed entity and has only limited experience with managing an exchange-traded fund regulated under the 1940 Act. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser’s effectiveness.

 

China AI ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Advisers seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

 

China AI ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

 

China AI ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk

 

China AI ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

 

China AI ETF | Small-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Small-Capitalization Investing. The securities of small-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large- or mid-capitalization companies. The securities of small-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large- or mid-capitalization stocks or the stock market as a whole. There is typically less publicly available information concerning smaller-capitalization companies than for larger, more established companies.

 

China AI ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
China AI ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.

 

Emerging Markets GPU ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers.

 

Emerging Markets GPU ETF | Sector Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Sector Risks. To the extent the Fund invests more heavily in particular sectors, its performance will be especially sensitive to developments that significantly affect those sectors. The Fund may invest a significant portion of its assets in the following sectors and, therefore, the performance of the Fund could be negatively impacted by events affecting each of these sectors.

 

Emerging Markets GPU ETF | Information Technology Sector Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Information Technology Sector Risk. The information technology sector includes companies engaged in internet software and services, technology hardware and storage peripherals, electronic equipment instruments and components, and semiconductors and semiconductor equipment, among other things. Information technology companies face intense competition, both domestically and internationally, which may have an adverse effect on profit margins. Information technology companies may have limited product lines, markets, financial resources or personnel. The products of information technology companies may face rapid product obsolescence due to technological developments and frequent new product introduction, unpredictable changes in growth rates and competition for the services of qualified personnel. Failure to introduce new products, develop and maintain a loyal customer base, or achieve general market acceptance for their products could have a material adverse effect on a company’s business. Companies in the information technology sector are heavily dependent on intellectual property and the loss of patent, copyright and trademark protections may adversely affect the profitability of these companies.
     
Emerging Markets GPU ETF | Semiconductors and Semiconductor Equipment Industry Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Semiconductors and Semiconductor Equipment Industry Risk. Semiconductor companies may face intense competition, both domestically and internationally, and such competition may have an adverse effect on their profit margins. Semiconductor companies may have limited product lines, markets, financial resources or personnel. Semiconductor companies’ supply chain and operations are dependent on the availability of materials that meet exacting standards and the use of third parties to provide components and services. Semiconductor companies may rely on a limited number of suppliers, or upon suppliers in a single location, for certain materials, equipment or tools. Finding and qualifying alternate or additional suppliers can be a lengthy process that can cause production delays or impose unforeseen costs, and such alternatives may not be available at all. Production can be disrupted by the unavailability of resources, such as water, silicon, electricity, gases and other materials. Suppliers may also increase prices or encounter cybersecurity or other issues that can disrupt production or increase production costs.

 

Emerging Markets GPU ETF | Foreign Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Foreign Securities Risk. Investments in non-U.S. securities involve risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. There may be less information publicly available about a non-U.S. issuer than a U.S. issuer. Non-U.S. issuers may be subject to different accounting, auditing, financial reporting and investor protection standards than U.S. issuers. Changes to the financial condition or credit rating of foreign issuers may also adversely affect the value of the Fund’s securities. Investments in non-U.S. securities may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. Because legal systems differ, there is also the possibility that it will be difficult to obtain or enforce legal judgments in some countries. Since foreign exchanges may be open on days when the Fund does not price its Shares, the value of the securities in the Fund’s portfolio may change on days when shareholders will not be able to purchase or sell the Fund’s Shares. Conversely, Shares may trade on days when foreign exchanges are closed. Investment in foreign securities may involve higher costs than investment in U.S. securities, including higher transaction and custody costs as well as the imposition of additional taxes by foreign governments. Each of these factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

 

Emerging Markets GPU ETF | Emerging Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Emerging Markets Risk. Investments in securities and instruments traded in developing or emerging markets, or that provide exposure to such securities or markets, can involve additional risks relating to political, economic, or regulatory conditions not associated with investments in U.S. securities and instruments. For example, developing and emerging markets may be subject to (i) greater market volatility, (ii) lower trading volume and liquidity, (iii) greater social, political and economic uncertainty, (iv) governmental controls on foreign investments and limitations on repatriation of invested capital, (v) lower disclosure, corporate governance, auditing and financial reporting standards, (vi) fewer protections of property rights, (vii) restrictions on the transfer of securities or currency, and (viii) settlement and trading practices that differ from those in U.S. markets. Each of these factors may impact the ability of the Fund to buy, sell or otherwise transfer securities, adversely affect the trading market and price for Shares to decline in value.
     
Emerging Markets GPU ETF | Frontier Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Frontier Markets Risk. Frontier market countries generally have smaller economies and even less developed capital markets than typical emerging market countries (which themselves have increased investment risk relative to more developed market countries) and, as a result, the Fund’s exposure to risks associated with investing in emerging market countries are magnified when the Fund invests in frontier market countries. The increased risks include: the potential for extreme price volatility and illiquidity in frontier market countries; government ownership or control of parts of the private sector and of certain companies; trade barriers, exchange controls, managed adjustments in relative currency values and other protectionist measures imposed or negotiated by the countries with which frontier market countries trade; and the relatively new and unsettled securities laws in many frontier market countries. In addition, frontier market countries are more likely to experience instability resulting, for example, from rapid changes or developments in social, political and economic conditions. Many frontier market countries are heavily dependent on international trade, which makes them more sensitive to world commodity prices and economic downturns and other conditions in other countries. Some frontier market countries have a higher risk of currency devaluations, and some of these countries may experience periods of high inflation or rapid changes in inflation rates and may have hostile relations with other countries. Securities issued by foreign governments or companies in frontier market countries are even more likely than emerging markets securities to have greater exposure to the risks of investing in foreign securities.
     
Emerging Markets GPU ETF | Depositary Receipt Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Depositary Receipt Risks. Depositary receipts involve risks similar to those associated with investments in foreign securities and certain additional risks. Depositary receipts listed on U.S. exchanges are issued by banks or trust companies and entitle the holder to all dividends and capital gains that are paid out on the underlying foreign shares (“Underlying Shares”). When the Fund invests in depositary receipts as a substitute for an investment directly in the Underlying Shares, the Fund is exposed to the risk that the depositary receipts may not provide a return that corresponds precisely with that of the Underlying Shares. The Fund may invest in unsponsored depositary receipts. The issuers of unsponsored depositary receipts are not obligated to disclose material information in the United States and, therefore, there may be less information available regarding such issuers and there may not be a correlation between such information and the value of the depositary receipts.
     
Emerging Markets GPU ETF | Currency Exchange Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Currency Exchange Rate Risk. The Fund’s assets may include exposure to investments denominated in non-U.S. currencies or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investments and the value of Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.
     
Emerging Markets GPU ETF | China Investing Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  China Investing Risks. The Chinese economy is generally considered an emerging market and can be significantly affected by economic and political conditions and policy in China and surrounding Asian countries. A relatively small number of Chinese companies represent a large portion of China’s total market and thus may be more sensitive to adverse political or economic circumstances and market movements. The economy of China differs, often unfavorably, from the U.S. economy in such respects as structure, general development, government involvement, wealth distribution, rate of inflation, growth rate, allocation of resources and capital reinvestment, among others. Prior to August 2022, the Public Company Accounting Oversight Board (“PCAOB”), which regulates auditors of U.S. public companies, had warned that it lacked the ability to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. In August 2022, the PCOAB secured its ability, through a formal agreement with Chinese authorities, to inspect audit work and practices of PCAOB-registered accounting firms in China and Hong Kong. The PCAOB’s limited ability to oversee the operations of accounting firms in China and Hong Kong means that inaccurate or incomplete financial records of an issuer’s operations may not be detected, which could negatively impact the Fund’s investments in such companies. Under China’s political and economic system, the central government has historically exercised substantial control over virtually every sector of the Chinese economy through administrative regulation and/or state ownership. The Chinese government strictly regulates the payment of foreign currency denominated obligations and sets monetary policy. The Chinese government may introduce new laws and regulations that could have an adverse effect on the Fund. Although China has begun the process of privatizing certain sectors of its economy, privatized entities may lose money and/or be re-nationalized. In addition, expropriation, including nationalization, confiscatory taxation, political, economic or social instability or other developments could adversely affect and significantly diminish the values of the Chinese companies in which the Fund invests. International trade tensions may arise from time to time which can result in trade tariffs, embargoes, trade limitations, trade wars and other negative consequences. These consequences may trigger a reduction in international trade, the oversupply of certain manufactured goods, substantial price reductions of goods and possible failure of individual companies and/or large segments of China’s export industry with a potentially severe negative impact to the Fund. From time to time and as recently as January 2020, China has experienced outbreaks of infectious illnesses, and the country may be subject to other public health threats or similar issues in the future. Any spread of an infectious illness, public health threat or similar issue could reduce consumer demand or economic output, result in market closures, travel restrictions or quarantines, and generally have a significant impact on the Chinese economy.
Emerging Markets GPU ETF | China A-Shares Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

     
  o China A-Shares Investment Risk. The liquidity of the A-shares market and trading prices of A-shares could be more severely affected than the liquidity and trading prices of other markets because the Chinese government restricts the flow of capital into and out of the A-shares market. The Fund may experience losses due to illiquidity of the Chinese securities markets or delay or disruption in execution or settlement of trades. The Fund’s investments in A-shares may become subject to frequent and widespread trading halts. In addition, trading through Stock Connect, which is a securities trading and clearing link between the mainland China stock exchanges and the Hong Kong stock exchange, is subject to a number of restrictions that may affect the Fund’s investments and returns. For example, trading through Stock Connect is subject to daily quotas that limit the maximum daily net purchases on any particular day, which may restrict or preclude the Fund’s ability to invest in China A-shares through Stock Connect.
     
  o

In addition, investments made through Stock Connect are subject to trading, clearance and settlement procedures that are relatively untested, which could pose risks to the Fund. Moreover, China A-shares purchased through Stock Connect generally may not be sold, purchased or otherwise transferred other than through Stock Connect in accordance with applicable rules. A primary feature of Stock Connect is the application of the home market’s laws and rules applicable to investors in China A-shares. Therefore, the Fund’s investments in China A-shares purchased through Stock Connect are generally subject to Chinese securities regulations and listing rules, among other restrictions. While overseas investors currently are exempt from paying capital gains or value added taxes on income and gains from investments in China A-shares purchased through Stock Connect, these tax rules could be changed, which could result in unexpected tax liabilities for the Fund. Stock Connect only operates on days when the Chinese and Hong Kong stock markets are each open for trading and when banks in each market are open on the corresponding settlement days. The Fund may purchase and sell A-shares through Stock Connect only on days when Stock Connect and U.S. markets are open for trading. Therefore, if it is a normal trading day for the Chinese market but Hong Kong and/or U.S. markets are closed, the Fund will not be able to trade any A-shares. The Fund may be subject to the risk of price fluctuations in A-shares on such days. The Fund is also subject to the risk that it will not be able to buy or sell A-shares in a timely manner on days when the U.S. markets are open but Stock Connect is not. Stock Connect is a relatively new program. Further developments are likely and there can be no assurance as to the program’s continued existence or whether future developments regarding the program may restrict or adversely affect the Fund’s investments or returns. In addition, the application and interpretation of the laws and regulations of Hong Kong and China, and the rules, policies or guidelines published or applied by relevant regulators and exchanges in respect of Stock Connect are uncertain, and they may have a detrimental effect on the Fund’s investments and returns.

 

Emerging Markets GPU ETF | Variable Interest Equity Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

  o

Variable Interest Equity Investment Risk. For purposes of raising capital offshore on exchanges outside of China, including on U.S. exchanges, many Chinese-based operating companies are structured as VIEs. In this structure, the Chinese-based operating company is the VIE and establishes a shell company in a foreign jurisdiction, such as the Cayman Islands. The shell company lists on a foreign exchange and enters into contractual arrangements with the VIE. This structure allows Chinese companies in which the government restricts foreign ownership to raise capital from foreign investors. While the shell company has no equity ownership of the VIE, these contractual arrangements permit the shell company to consolidate the VIE’s financial statements with its own for accounting purposes and provide for economic exposure to the performance of the underlying Chinese operating company. Therefore, an investor in the listed shell company, such as the Fund, will have exposure to the Chinese-based operating company only through contractual arrangements and has no ownership in the Chinese-based operating company. Furthermore, because the shell company only has specific rights provided for in these service agreements with the VIE, its abilities to control the activities at the Chinese-based operating company are limited and the operating company may engage in activities that negatively impact investment value.

 

While the VIE structure has been widely adopted, it is not formally recognized under Chinese law and therefore there is a risk that the Chinese government could prohibit the existence of such structures or negatively impact the VIE’s contractual arrangements with the listed shell company by making them invalid. If these contracts were found to be unenforceable under Chinese law, investors in the listed shell company, such as the Fund, may suffer significant losses with little or no recourse available. If the Chinese government determines that the agreements establishing the VIE structures do not comply with Chinese law and regulations, including those related to restrictions on foreign ownership, it could subject a Chinese-based issuer to penalties, revocation of business and operating licenses, or forfeiture of ownership interest. In addition, the listed shell company’s control over a VIE may also be jeopardized if a natural person who holds the equity interest in the VIE breaches the terms of the agreement, is subject to legal proceedings or if any physical instruments for authenticating documentation, such as chops and seals, are used without the Chinese-based issuer’s authorization to enter into contractual arrangements in China. Chops and seals, which are carved stamps used to sign documents, represent a legally binding commitment by the company. Moreover, any future regulatory action may prohibit the ability of the shell company to receive the economic benefits of the Chinese-based operating company, which may cause the value of the Fund’s investment in the listed shell company to suffer a significant loss. For example, in 2021, the Chinese government prohibited use of the VIE structure for investment in after-school tutoring companies. There is no guarantee that the government will not place similar restrictions on other industries.

 

Emerging Markets GPU ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, imperfect correlation with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be an imperfect correlation between the value of the underlying asset and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested. In addition, the Fund’s investments in derivatives are subject to the following risks:

 

Emerging Markets GPU ETF | Swap Agreements [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Swap Agreements. The use of swap transactions is a highly specialized activity, which involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. Whether the Fund will be successful in using swap agreements to achieve its investment goal depends on the ability of the Adviser to structure such swap agreements in accordance with the Fund’s investment objective and to identify counterparties for those swap agreements. Additionally, any financing, borrowing or other costs associated with using swap transactions may also have the effect of lowering the Fund’s return. The swap agreements in which the Fund invests are generally traded in the over-the-counter market, which generally has less transparency than exchange-traded derivatives instruments. In a standard swap transaction, two parties agree to exchange the return (or differentials in rates of return) earned or realized on particular predetermined reference assets or underlying securities or instruments. The gross return to be exchanged or swapped between the parties is calculated based on a notional amount or the return on or change in value of a particular dollar amount invested in a basket of securities.

 

 

Emerging Markets GPU ETF | Forward Contracts [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Forward Contracts. A forward contract is a negotiated agreement between two parties to buy or sell an asset, reference instrument, or other financial exposure at a specified price on a specified future date. Forward contracts may be used to obtain or manage exposure to particular securities, markets, sectors, countries, indices, or other investments more efficiently than investing directly in the underlying instruments. Forward contracts are subject to the risk that the value of the contract may not correlate perfectly with the value of the assets, markets, or exposures being hedged or tracked. The use of forward contracts may reduce or eliminate the opportunity for gain if the value of the underlying exposure moves in a direction favorable to the Fund’s position. Because forward contracts are typically privately negotiated and traded in the over-the-counter market, they may be less liquid than exchange-traded instruments and subject the Fund to counterparty risk, which is the risk that the other party to the contract will fail to perform its obligations. Forward contracts also may involve leverage and can result in losses that exceed the amount initially invested. The Fund’s use of forward contracts may increase the volatility of the Fund’s returns and may result in losses if the Sub-Adviser’s investment views or analyses prove incorrect. Unanticipated changes in the value of the underlying reference exposure may result in poorer overall performance for the Fund than if the Fund had not entered into such contracts.

 

Emerging Markets GPU ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. The Fund is subject to counterparty risk by virtue of its investments in derivatives which exposes the Fund to the risk that the counterparty will not fulfill its obligation to the Fund. Counterparty risk may arise because of the counterparty’s financial condition (i.e., financial difficulties, bankruptcy, or insolvency), market activities and developments, or other reasons, whether foreseen or not. A counterparty’s inability to fulfill its obligation may result in significant financial loss to the Fund and the Fund may be unable to recover its investment from such counterparty or may obtain a limited and/or delayed recovery.

 

Emerging Markets GPU ETF | Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Concentration Risk. The Fund’s investment exposure will be concentrated in the group of industries comprising the semiconductors and semiconductor equipment industries. As a result, the value of the Fund’s Shares may rise and fall more than the value of shares that are invested in securities or financial instruments of companies that encompass a broader range of industries.

 

Emerging Markets GPU ETF | Economic and Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Economic and Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in the general financial markets, a particular financial market, or other asset classes, due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. The imposition by the U.S. of tariffs on goods imported from foreign countries and reciprocal tariffs levied on U.S. goods by those countries also may lead to volatility and instability in domestic and foreign markets.

 

Emerging Markets GPU ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

 

Emerging Markets GPU ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as “Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.
     
Emerging Markets GPU ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Cash Redemption Risk. The Fund’s investment strategy may require it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds. For example, the Fund may not be able to redeem in-kind certain securities held by the Fund (e.g., derivative instruments). In such a case, the Fund may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the Fund to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes. Additionally, there may be brokerage costs or taxable gains or losses that may be imposed on the Fund in connection with a cash redemption that may not have occurred if the Fund had made a redemption in-kind. These costs could decrease the value of the Fund to the extent they are not offset by a transaction fee payable by an AP.
     
Emerging Markets GPU ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.
     
Emerging Markets GPU ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.
     
Emerging Markets GPU ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]
  Trading. Although Shares are listed on a national securities exchange, such as The Nasdaq Stock Market, LLC (the “Exchange”), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that an active trading market for the Shares will develop or be maintained or that the Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares. Shares trade on the Exchange at market price that may be below, at or above the Fund’s NAV. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to the Exchange “circuit breaker” rules. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged. As a result, the Fund could be adversely affected and be unable to implement its investment strategies in the event of an unscheduled closing.

 

 

Emerging Markets GPU ETF | Geographic Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Geographic Investment Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region.

 

Emerging Markets GPU ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]
 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

 

Emerging Markets GPU ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s investment portfolio, the portfolio managers will apply investment techniques and risk analyses that may not produce the desired result. There can be no guarantee that the Fund will meet its investment objective. 

 

Emerging Markets GPU ETF | New Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

New Fund Risk. The Fund is a recently organized management investment company with no operating history. As a result, prospective investors do not have a track record or history on which to base their investment decisions.

 

Emerging Markets GPU ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is a recently formed entity and has only limited experience with managing an exchange-traded fund regulated under the 1940 Act. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser’s effectiveness.

 

Emerging Markets GPU ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational factors, including, but not limited to, human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund relies on third-parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, Adviser, and Sub-Advisers seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

 

Emerging Markets GPU ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

 

Emerging Markets GPU ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk

 

Emerging Markets GPU ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

 

Emerging Markets GPU ETF | Small-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Small-Capitalization Investing. The securities of small-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large- or mid-capitalization companies. The securities of small-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large- or mid-capitalization stocks or the stock market as a whole. There is typically less publicly available information concerning smaller-capitalization companies than for larger, more established companies.

 

Emerging Markets GPU ETF | GPU Companies Sector Risk [Member]  
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GPU Companies Sector Risk. The Fund may have significant exposure to companies that design, manufacture, or supply graphics processing units (“GPUs”) for AI and high-performance computing applications. The GPU market is highly concentrated, with a small number of dominant companies controlling a substantial share of the market for advanced AI accelerators. This concentration creates a significant issuer-specific risk, as adverse developments affecting one or more of these dominant companies, including failure to meet market expectations for growth, competitive pressures, product defects, supply chain disruptions, or regulatory scrutiny, could have a disproportionate impact on the Fund’s performance. The Fund’s exposure to such companies may also subject the Fund to risks associated with the AI industry, including rapidly evolving technology, intense competition, uncertain regulatory frameworks, and the potential for significant volatility in demand for AI-related products and services. If AI adoption slows, AI efficiency gains reduce demand for computational resources, or technological shifts favor alternative computing architectures, companies focused on GPU production could experience material declines in revenue and profitability.

 

Emerging Markets GPU ETF | Risk Lose Money [Member]  
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Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
Emerging Markets GPU ETF | Risk Nondiversified Status [Member]  
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Non-Diversification Risk. Because the Fund is “non-diversified,” it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.