Investment Risks - Themes Optical ETF
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Nov. 06, 2026 |
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You can lose money on your investment in the Fund. The Fund is subject to the risks summarized below. Some or all of these risks may adversely affect the Fund’s net asset value per share (“NAV”), trading price, yield, total return and/or ability to meet its objectives. For more information about the risks of investing in the Fund, see the section in the Fund’s prospectus entitled “Additional Information about the Principal Risks of Investing in the Fund.” Each risk summarized below is considered a “principal risk” of investing in the Fund, regardless of the order in which it appears.
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| Concentration Risk [Member] |
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Concentration Risk. To the extent that the Index concentrates in investments related to a particular industry or group of industries, the Fund also is expected to concentrate its investments to approximately the same extent. In such event, the Fund’s performance will be particularly susceptible to adverse events impacting such industry, which may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand; competition for resources; adverse labor relations; political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a particular industry. As a result, the value of the Fund’s investments may rise and fall more than the value of shares of a fund that invests in securities of companies in a broader range of industries. |
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Optical Networks Companies Risk. Optical Networks Companies may be subject to rapid changes in technology, intense competition, government regulation, and obsolescence risk. Securities of such companies may be subject to greater price volatility than securities of companies in other sectors, particularly over the short term. The prices of securities of companies in these industries may fluctuate widely due to competitive pressures, rapid product cycles, changes in the regulatory environment, and shifts in supply and demand dynamics. Many Optical Networks Companies are relatively small and may have limited product lines, markets, financial resources, or personnel, making them more susceptible to business risks and adverse developments. Optical Networks Companies may also be dependent upon government contracts or subsidies, which may be subject to cancellation, renegotiation, or delay in payment. Additionally, the development and commercialization of photonic and optical technologies may be contingent upon the broader adoption of related technologies, including artificial intelligence, data center infrastructure, and advanced telecommunications networks. A slowdown or disruption in the growth of these related sectors could materially and adversely affect the revenues and profitability of Optical Networks Companies in which the Fund invests. |
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| Calculation Methodology Risk [Member] |
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Calculation Methodology Risk. The Index Provider relies directly or indirectly on various sources of information to assess the criteria of issuers included in the Index, including information that may be based on assumptions and estimates. Neither the Fund, the Index Provider, nor the Adviser can offer assurances that the Index’s calculation methodology or sources of information will provide an accurate assessment of included issuers or a correct valuation of securities, nor can they guarantee the availability or timeliness of the production of the Index. |
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| Calculation Methodology Risk Related To Certain Chinese Companies [Member] |
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Calculation Methodology Risk Related to Certain
Chinese Companies. In the Chinese equity market, free float market capitalization is significantly lower than total market capitalization.
This lower float ratio is primarily due to widespread government ownership. As a result, certain well-known Chinese companies, including
companies held in VIEs, may be excluded from or have lower weights in an Index as a result of the inclusion of securities ranked
by their free float market capitalization in an Index. |
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| Counterpartycollateral Risk [Member] |
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Counterparty/Collateral Risk. If a counterparty is unwilling or unable to make timely payments to meet its contractual obligations or fails to return holdings that are subject to the agreement with the counterparty it may result in the Fund losing money.
In addition, because the Fund may enter into swap agreements with a limited number of counterparties, this increases the Fund’s exposure to counterparty credit risk. The risk that no suitable counterparties will enter into or continue to provide swap exposure to the Fund may be increased when there is significant market volatility. |
Collateral pledged by a counterparty may be insufficient to fully mitigate the Fund’s exposure in the event of a default. This risk may arise from declines in the value of the collateral, limited liquidity or marketability of the collateral, legal or operational risks (including risks related to the enforceability or perfection of the Fund’s security interest), or delays in accessing or liquidating the collateral. To the extent the value of the collateral is insufficient or cannot be realized in a timely manner, the Fund may experience losses, which may be substantial.
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| Custody Risk [Member] |
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Custody Risk. Investments in emerging markets, such as China, may be subject to 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. |
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| Cybersecurity Risk [Member] |
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Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund and/or the Fund’s service providers, including the Adviser, Index Provider, market makers, Authorized Participants (“APs”) or the issuers of securities in which the Fund invests, have the ability to cause disruptions, negatively impact the Fund’s business operations and/or potentially result in financial losses to the Fund and its shareholders. While the Fund has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherent limitations in such plans and systems. Furthermore, the Fund cannot control the cybersecurity plans and systems of the Fund’s Index Provider, Adviser, other service providers, market makers, APs or issuers of securities in which the Fund invests. |
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| Depositary Receipts Risk [Member] |
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Depositary Receipts Risk. The Fund may invest in depositary receipts (e.g., ADRs and GDRs) which involve similar risks to those associated with investments in foreign securities. Investments in depositary receipts may be less liquid than the underlying shares in their primary trading market and, if not included in the Index, may negatively affect the Fund’s ability to replicate the performance of the Index. The issuers of depositary receipts may discontinue issuing new depositary receipts and withdraw existing depositary receipts at any time, which may result in costs and delays in the distribution of the underlying assets to the Fund and may negatively impact the Fund’s performance and the Fund’s ability to replicate/track the performance of its Index. |
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| Derivatives Risk [Member] |
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Derivatives Risk. Derivatives are financial instruments
that derive value from an underlying reference asset or assets, such as stocks. Investing in derivatives may expose the Fund to greater
risks, and may result in larger losses or smaller gains, than investing directly in the reference asset underlying those derivatives.
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,
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 Security and the derivative.
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. As a result, the value of an investment in the Fund may change quickly and without warning.
Additionally, any financing, borrowing or other costs associated with using derivatives may also have the effect of lowering the
Fund’s return. Such costs may increase as interest rates rise. |
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Swap Agreements Risk. The Fund expects to
use swap agreements to achieve its investment objective. Swap agreements are entered into primarily with major global financial institutions
for a specified period which may range from one day to more than one year. 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 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 reference asset. Swap agreements are generally traded over-the-counter,
and therefore, may not receive regulatory protection, which may expose investors to significant losses. |
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| Equity Market Risk [Member] |
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Equity Market Risk. 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 industries, sectors or companies in which the Fund invests. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change. The Fund’s NAV and market price may fluctuate significantly in response to these and other factors. As a result, an investor could lose money over short or long periods of time. |
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| Etf Risks [Member] |
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ETF Risks. The Fund is an ETF and, as a result of an ETF’s structure, is exposed to the following risks: |
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APs, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as 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 of the Fund 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. |
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Cash Redemption Risk. To the extent the Fund’s investment strategy requires it to redeem Shares for cash or to otherwise include cash as part of its redemption proceeds, 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. |
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Costs of Buying or Selling Shares of the Fund. Due to the costs of buying or selling shares of the Fund, including brokerage commissions imposed by brokers and bid/ask spreads, frequent trading of shares of the Fund may significantly reduce investment results and an investment in shares of the Fund may not be advisable for investors who anticipate regularly making small investments. |
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Shares of the Fund May Trade at Prices Other Than NAV. As with all ETFs, shares of the Fund may be bought and sold in the secondary market at market prices. The price of shares of the Fund, like the price of all traded securities, will be subject to factors such as supply and demand, as well as the current value of the Fund’s portfolio holdings. Although it is expected that the market price of the shares of the Fund will approximate the Fund’s NAV, there may be times when the market price of the shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount). 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. |
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Trading. Although shares of the Fund are listed for trading
on a national securities exchange, Cboe BZX Exchange, Inc. (the “Exchange”), and may be traded on U.S. exchanges
other than the Exchange, there can be no assurance that shares of the Fund will trade with any volume, or at all, on any stock exchange.
In stressed market conditions, the liquidity of shares of the Fund may begin to mirror the liquidity of the Fund’s underlying
portfolio holdings, which can be significantly less liquid than shares of the Fund, and this could lead to differences between the
market price of the shares of the Fund and the underlying value of those shares. |
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| Foreign Currency Risk [Member] |
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Foreign Currency Risk. The Fund may invest in securities denominated in foreign currencies. Because the Fund’s NAV is determined in U.S. dollars, the Fund’s NAV could decline if currencies of the underlying securities depreciate against the U.S. dollar or if there are delays or limits on repatriation of such currencies. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the Fund’s NAV may change quickly and without warning, which could have a significant negative impact on the Fund. |
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| Foreign Securities Risk [Member] |
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Foreign Securities Risk. The Fund’s investments in foreign securities can be riskier than U.S. securities investments. Investments in the securities of foreign issuers (including investments in ADRs and GDRs) are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. The prices of foreign securities and the prices of U.S. securities have, at times, moved in opposite directions. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on U.S. exchanges could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security (or the security underlying the ADR or GDR) is traded. You may lose money due to political, economic and geographic events affecting a foreign issuer or market. |
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| Geographic Risk [Member] |
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Geographic Risk. The Fund is subject to
geographic risk, which is the chance that world events—such as political upheaval, financial troubles, or natural disasters—will
adversely affect the value of securities issued by companies in certain countries or regions. |
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Risk of Investing in Developed Markets. The Fund’s investment in a developed country issuer may subject the Fund to regulatory, political, currency, security, economic and other risks associated with developed countries. Developed countries tend to represent a significant portion of the global economy and have generally experienced slower economic growth than some less developed countries. Certain developed countries have experienced security concerns, such as terrorism and strained international relations. Incidents involving a country’s or region’s security may cause uncertainty in its markets and may adversely affect its economy and the Fund’s investments. In addition, developed countries may be impacted by changes to the economic conditions of certain key trading partners, regulatory burdens, debt burdens and the price or availability of certain commodities. |
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Risk of Investing in Emerging Markets. 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 or investments in more developed international markets. Such conditions may impact the ability of the Fund to buy, sell or otherwise transfer securities, adversely affect the trading market and price for Shares and cause the Fund to decline in value. |
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Risk of Investing in Asia. Many Asian economies have experienced rapid growth and industrialization in recent years, but there is no assurance that this growth rate will be maintained. Other Asian economies, however, have experienced high inflation, high unemployment, currency devaluations and restrictions, and over-extension of credit. Geopolitical hostility, political instability, as well as economic or environmental events in any one Asian country may have a significant economic effect on the entire Asian region, as well as on major trading partners outside Asia. Any adverse event in the Asian markets may have a significant adverse effect on some or all of the economies of the countries in which the Fund invests. Many Asian countries are subject to political risk, including political instability, corruption and regional conflict with neighboring countries. North Korea and South Korea each have substantial military capabilities, and historical tensions between the two countries present the risk of war. Escalated tensions involving the two countries and any outbreak of hostilities between the two countries, or even the threat of an outbreak of hostilities, could have a severe adverse effect on the entire Asian region. Certain Asian countries have also developed increasingly strained relationships with the U.S., and if these relations were to worsen, they could adversely affect Asian issuers that rely on the U.S. for trade. In addition, many Asian countries are subject to social and labor risks associated with demands for improved political, economic and social conditions. |
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Risk of Investing in China. The Chinese economy is generally considered an emerging market and can be significantly affected by economic and political conditions in China and surrounding Asian countries and may demonstrate significantly higher volatility from time to time in comparison to developed markets. China may be subject to considerable degrees of economic, political and social instability. Over the last few decades, the Chinese government has undertaken reform of economic and market practices and has expanded the sphere of private ownership of property in China. However, Chinese markets generally continue to experience inefficiency, volatility and pricing anomalies resulting from governmental influence, a lack of publicly available information and/or political and social instability. Chinese companies are also subject to the risk that Chinese authorities can intervene in their operations and structure. In addition, the Chinese economy is export-driven and highly reliant on trading with key partners. A downturn in the economies of China’s primary trading partners could slow or eliminate the growth of the Chinese economy and adversely impact the Fund’s investments. 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, trade relations between the U.S. and China have recently been strained. Worsening trade relations between the two countries could adversely impact the Fund, particularly to the extent that the Chinese government restricts foreign investments in Chinese companies or the U.S. government restricts investments by U.S. investors in China. There may be companies included in the Index that have at times been, and may in the future be, subject to such restrictions. These recent developments have heightened concerns of increased tariffs and restrictions on trade between the two countries. An increase in tariffs or trade restrictions, or even the threat of such developments, could lead to a significant reduction in international trade, which could have a negative impact on China’s export industry and a commensurately negative impact on the Fund. Market volatility and volatility in the price of Fund shares may also result.
The political reunification of mainland China and Taiwan, over which mainland China continues to claim sovereignty, is a highly complex issue. There is the potential for future political, military or economic disturbances that may have an adverse impact on the values of the Fund’s investments in mainland China (through its exposure to VIEs) and elsewhere, or make certain Fund investments impractical or impossible. Any escalation of hostility between mainland China and Taiwan would likely have a significant adverse impact on the value and liquidity of the Fund’s investments in both mainland China and elsewhere, causing substantial investment losses for the Fund.
Disclosure and regulatory standards in emerging market countries, such as China, are in many respects less stringent than U.S. standards. There is substantially less publicly available information about Chinese issuers than there is about U.S. issuers. Chinese companies, including Chinese companies that are listed on U.S. exchanges, are not subject to the same degree of accounting standards or auditor oversight as companies in more developed countries. As a result, information about the Chinese securities companies to which the Fund is exposed may be less reliable or complete. Chinese companies with securities listed on U.S. exchanges may be delisted if they do not meet U.S. accounting standards and auditor oversight requirements, such as those mandated by the Holding Foreign Companies Accountable Act (HFCAA), which would significantly decrease the liquidity and value of the securities. In addition, there may be significant obstacles to obtaining information necessary for investigations into or litigation against Chinese companies, and shareholders may have limited legal remedies. The Fund is not actively managed and does not select investments based on investor protection considerations.
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 an entity, which is typically offshore in a foreign jurisdiction, such as the Cayman Islands. The offshore entity 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 offshore entity has no equity ownership of the VIE, these contractual arrangements permit the offshore entity 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 offshore entity, 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 offshore entity 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 offshore entity by making them invalid. If these contracts were found to be unenforceable under Chinese law, investors in the listed offshore entity, 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.
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Risk of Investing in South Korea. Investments
in South Korean issuers involve risks that are specific to South Korea, including legal, regulatory, political, currency, security
and economic risks. Substantial political tensions exist between North Korea and South Korea. Escalated tensions involving the two
nations and the outbreak of hostilities between the two nations, or even the threat of an outbreak of hostilities, could have a severe
adverse effect on the South Korean economy. In addition, South Korea’s economic growth potential has recently been on a decline
because of a rapidly aging population and structural problems, among other factors. The South Korean economy is heavily reliant on
trading exports and disruptions or decreases in trade activity could lead to further declines. |
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Risks of Investing in Taiwan. Investments tied to Taiwan
may be adversely affected by economic, political, diplomatic and regulatory developments affecting Taiwan and the surrounding region.
Taiwan’s economy is significantly dependent on international trade and exports and may be sensitive to changes in global demand,
supply chain disruptions, and fluctuations in technology and semiconductor markets. Investments related to Taiwan may also be affected
by geopolitical tensions, including relations between Taiwan and China, which may increase market volatility and adversely affect
the value of investments. |
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| Government Regulation Of Derivatives Risk [Member] |
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Government Regulation of Derivatives Risk. It is possible that government regulation of various types of derivative instruments, including swap agreements, may limit or prevent the Fund from using such instruments as a part of its investment strategy, and could ultimately prevent the Fund from being able to achieve its investment objective. It is impossible to predict fully the effects of legislation and regulation in this area, but the effects could be substantial and adverse. |
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| International Closed Market Trading Risk [Member] |
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International Closed Market Trading Risk. To the extent that the underlying investments held by the Fund trade on foreign exchanges that may be closed when the securities exchange on which the Fund’s Shares trade is open, there are likely to be deviations between the current price of such an underlying security and the last quoted price for the underlying security (i.e., the Fund’s quote from the closed foreign market). These deviations could result in premiums or discounts to the Fund’s NAV that may be greater than those experienced by other ETFs. |
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| Largecapitalization Investing Risk [Member] |
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Large-Capitalization Investing Risk. The Fund’s performance may be adversely affected if securities of large-capitalization companies underperform securities of smaller-capitalization companies or the market as a whole. 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. |
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| Line Of Business Risk [Member] |
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Line Of Business Risk. Certain companies included in the Fund’s portfolio will be engaged in other lines of business unrelated to the development of optical networking products, and these lines of business could adversely affect their operating results. The operating results of these companies may fluctuate as a result of these additional risks and events in the other lines of business. Despite a company’s possible success in activities linked to its development of optical networking products, there can be no assurance that the other lines of business in which these companies are engaged will not have an adverse effect on a company’s business or financial condition. |
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| Liquidity Risk [Member] |
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Liquidity Risk. The Fund’s investments are subject to liquidity risk, which exists when an investment is or becomes difficult or impossible to purchase or sell at an advantageous time and price. If a transaction is particularly large or if the relevant market is or becomes illiquid, it may not be possible to initiate a transaction or liquidate a position, which may cause the Fund to suffer significant losses and difficulties in meeting redemptions. Liquidity risk may be the result of, among other things, market turmoil, the reduced number and capacity of traditional market participants, or the lack of an active trading market. Markets for securities or financial instruments could be disrupted by a number of events, including, but not limited to, an economic crisis, natural disasters, new legislation or regulatory changes inside or outside the U.S. liquid investments may become less liquid after being purchased by the Fund, particularly during periods of market stress. In addition, if a number of securities held by the Fund stop trading, it may have a cascading effect and cause the Fund to halt trading. Volatility in market prices will increase the risk of the Fund being subject to a trading halt. Certain countries in which the Fund may invest may be subject to extended settlement delays and/or foreign holidays, during which the Fund will unlikely be able to convert holdings to cash. |
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| Midcapitalization Companies Risk [Member] |
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Mid-Capitalization Companies Risk. Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies. |
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| Natural Language Processing N L P Model Risk [Member] |
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Natural Language Processing (NLP) Model Risk. The Index Provider uses NLP models to assist in the development of the Fund’s Index. The Index’s investment theme is created by the Index Provider and the Index Provider’s description of the theme is used by the NLP screening models to identify relevant companies for index consideration. The investment theme must be accurately described in order for the NLP models to identify companies that reflect the themes and sub-themes of the Index. If the description of the theme is incorrect or incomplete, the NLP model may identify companies that are not relevant to the Fund’s investment theme or fail to identify companies that are relevant. As a result, securities may be included in or excluded from the Index that would have been excluded or included had the description of the theme been correct and complete. If the composition of the Index reflects such errors, the Fund’s portfolio can be expected to also reflect the errors. There is no guarantee that the Index will reflect the theme and sub-theme exposures intended. The Index Provider relies on the integrity of the data being analyzed and its review processes could be adversely affected if erroneous or outdated data is utilized. |
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| New Fund Risk [Member] |
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New Fund Risk. The Fund has limited operating history. There can be no assurance that the Fund will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Index than it otherwise would at higher asset levels, or it could ultimately liquidate. The Fund’s distributor does not maintain a secondary market in Fund shares. |
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| Nondiversification Risk [Member] |
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Non-Diversification Risk. The Fund is non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance. |
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| Operational Risk [Member] |
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Operational Risk. The Fund is exposed to operational risks arising from a number of 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 and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address significant operational risks. |
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| Passive Investment Risk [Member] |
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Passive Investment Risk. The Fund is not actively managed and the Adviser would not sell a security due to current or projected underperformance of a security, industry or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology. The Fund invests in securities included in the Index, regardless of their investment merits. The Fund does not take defensive positions under any market conditions, including conditions that are adverse to the performance of the Fund. |
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| Sector Risk [Member] |
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Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors. |
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Information Technology Sector Risk. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund’s investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of information technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability. |
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| Securities Lending Risk [Member] |
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Securities Lending Risk. To the extent the Fund lends its securities, it may be subject to the following risks: (1) the securities in which the collateral is invested may not perform sufficiently to cover the applicable rebate rates paid to borrowers and related administrative costs; (2) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions; and (3) although borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities, there is the risk of possible loss of rights in the collateral should the borrower fail financially. |
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| Smallcapitalization Investing Risk [Member] |
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Small-Capitalization Investing Risk. Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid. |
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| Thematic Investing Risk [Member] |
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Thematic Investing Risk. The Fund relies on the Index Provider for the identification of securities for inclusion in the Index that reflect themes and sub-themes, and its performance may suffer if such securities are not correctly identified or if a theme or sub-theme develops in an unexpected manner. Performance may also suffer if the stocks included in the Index do not benefit from the development of such themes or sub-themes. Performance may also be impacted by the inclusion of non-theme relevant exposures in the Index. There is no guarantee that the Index will reflect the theme and sub-theme exposures intended. |
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| Tracking Risk [Member] |
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Tracking Risk. The performance of the Fund may vary from the performance of the Index as a result of Fund fees and expenses, the use of representative sampling, brokerage and transaction costs, and other factors. In addition, the Fund may not be able to invest in certain securities included in the Index or invest in them in the exact proportions represented in the Index due to market disruptions, legal restrictions or limitations, certain exchange listing standards, or a lack of liquidity on stock exchanges in which such securities trade. The Fund may not be fully invested at times either as a result of cash flows into the Fund or reserves of cash held by the Fund to meet redemptions or pay expenses. In addition, foreign exchange fluctuations and any issues the Fund encounters with regard to currency convertibility (including the cost of borrowing funds, if any) and repatriation may also increase the index tracking error risk. |
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| Valuation Risk [Member] |
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Valuation Risk. Independent market quotations for certain investments held by the Fund may not be readily available, and such investments may be fair valued or valued by a pricing service at an evaluated price. These valuations involve subjectivity and different market participants may assign different prices to the same investment. As a result, there is a risk that the Fund may not be able to sell an investment at the price assigned to the investment by the Fund. In addition, the securities in which the Fund invests may trade on days that the Fund does not price its shares; as a result, the value of Fund shares may change on days when investors cannot purchase or sell their Fund holdings. |
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| Risk Lose Money [Member] |
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You can lose money on your investment in the Fund.
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| Risk Nondiversified Status [Member] |
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The Fund is non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.
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