LOGO    SUMMARY PROSPECTUS October 30, 2026

AB All China Equity Portfolio

Ticker: Class A–ACEAX; Advisor Class–ACEYX

 

Before you invest, you may want to review the Fund’s Prospectus, which contains more information about the Fund and its risks. The Fund’s Prospectus and Statement of Additional Information (“SAI”), both dated October 30, 2026, as may be amended or supplemented, are incorporated by reference into this Summary Prospectus. For free paper or electronic copies of the Fund’s Prospectus, reports to shareholders and other information about the Fund, go to www.abfunds.com/go/prospectus, email a request to prorequest@alliancebernstein.com, call (800) 227-4618, or ask any financial advisor, bank, or broker-dealer who offers shares of the Fund.

PRO-0103-ACE-1026

 

INVESTMENT OBJECTIVE

The Fund’s investment objective is to seek long-term growth of capital.

FEES AND EXPENSES OF THE FUND

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may be required to pay commissions and/or other forms of compensation to a broker for transactions in Advisor Class shares, which are not reflected in the tables or the examples below. You may qualify for sales charge reductions if you and members of your family invest, or agree to invest in the future, at least $100,000 in AB Mutual Funds. More information about these and other discounts is available from your financial intermediary and in Investing in the Funds—Sales Charge Reduction Programs for Class A Shares on page 132 of the Fund’s Prospectus, in Appendix B—Financial Intermediary Waivers of the Fund’s Prospectus and in Purchase of Shares—Sales Charge Reduction Programs for Class A Shares on page 199 of the Fund’s SAI.

Shareholder Fees (fees paid directly from your investment)

 

     

Class A

Shares

  

Advisor Class

Shares

Maximum Sales Charge (Load) Imposed on Purchases

(as a percentage of offering price)

   4.25%    None

Maximum Deferred Sales Charge (Load)

(as a percentage of offering price or redemption proceeds, whichever is lower)

   None(a)    None

Exchange Fee

   None    None

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

 

      Class A      Advisor Class  

Management Fees

     0.95%        0.95%  

Distribution and/or Service (12b-1) Fees

     0.25%        None  

Other Expenses:

     

Transfer Agent

     0.04%        0.04%  

Other Expenses(b)

     0.88%        0.88%  
  

 

 

    

 

 

 

Total Other Expenses

     0.92%        0.92%  
  

 

 

    

 

 

 

Total Annual Fund Operating Expenses

     2.12%        1.87%  
  

 

 

    

 

 

 

Fee Waiver and/or Expense Reimbursement(c)

     (0.62)%        (0.62)%  
  

 

 

    

 

 

 

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

     1.50%        1.25%  
  

 

 

    

 

 

 
   

 

(a)

Purchases of Class A shares in amounts of $1,000,000 or more, or by certain group retirement plans, may be subject to a 1%, 1-year contingent deferred sales charge, or CDSC, which may be subject to waiver in certain circumstances.

 

(b)

“Other Expenses” includes acquired fund fees and expenses totaling less than 0.01%.

 

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(c)

The Adviser has contractually agreed to waive its management fees and/or to bear certain expenses of the Fund to the extent necessary to prevent total Fund operating expenses (excluding acquired fund fees and expenses other than the advisory fees of any AB Funds in which the Fund may invest, interest expense, taxes, extraordinary expenses, and brokerage commissions and other transaction costs), on an annualized basis, from exceeding 1.50% and 1.25% of average daily net assets, respectively, for Class A and Advisor Class shares. In addition to that agreement, in connection with the Fund’s investments in AB Government Money Market Portfolio (the “Money Market Portfolio”) (except for the investment of any cash collateral from securities lending), the Adviser has contractually agreed to waive its management fee from the Fund and/or reimburse other expenses of the Fund in an amount equal to the Fund’s pro rata share of the Money Market Portfolio’s effective management fee. Each of the agreements will remain in effect until October 31, 2027 and may only be terminated or changed with the consent of the Fund’s Board of Directors. In addition, each of the agreements will be automatically extended for one-year terms unless the Adviser provides notice of termination to the Fund at least 60 days prior to the end of the period.

Examples

The Examples are intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Examples assume that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the periods. The Examples also assume that your investment has a 5% return each year, that the Fund’s operating expenses stay the same and that any fee waiver and/or expense limitation is in effect for only the first year. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 

     Class A     Advisor Class  

After 1 Year

  $ 571     $ 127  

After 3 Years

  $ 1,004     $ 528  

After 5 Years

  $ 1,461     $ 953  
After 10 Years   $ 2,726     $ 2,140  

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys or sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when shares are held in a taxable account. These transaction costs, which are not reflected in the Annual Fund Operating Expenses or in the Examples, affect the Fund’s performance. During the most recent fiscal period, the Fund’s portfolio turnover rate was 67% of the average value of its portfolio.

PRINCIPAL STRATEGIES

The Adviser seeks to achieve the Fund’s investment objective by investing, under normal circumstances, at least 80% of the Fund’s net assets in a portfolio of equity securities of companies economically tied to the People’s Republic of China (“China”) (including Hong Kong). A company is considered to be economically tied to China if: (i) the company is domiciled or organized in China; (ii) the company has securities that are traded principally in China; or (iii) the company conducts a substantial part of its economic activities in China or is a U.S.-listed entity established by a company conducting a substantial part of its economic activities in China, which has been structured to provide investors with exposure to the company. Equity securities may include common stocks, preferred stocks, the equity securities of real estate investment trusts, depositary receipts and derivative instruments related to equity securities. The Adviser expects to invest Fund assets both in shares of companies that trade on the Shanghai Stock Exchange or the Shenzhen Stock Exchange (“China A shares”) and shares of companies economically tied to China that trade in Hong Kong, such as China H shares, or outside of China.

The Adviser believes that, over time, securities that are undervalued by the market relative to their long-term earnings power can provide high returns. The Adviser utilizes fundamental analysis and its quantitative models to attempt to identify these securities for investment by the Fund, attempting to balance factors relating to valuation, company quality and investor sentiment, and will seek to build a portfolio that delivers attractive risk-adjusted returns.

The Adviser may, but frequently will not, hedge the foreign currency exposure resulting from the Fund’s security positions through the use of currency-related derivatives.

PRINCIPAL RISKS

•  

Market Risk: The value of the Fund’s assets will fluctuate as the market or markets in which the Fund invests fluctuate. The value of the Fund’s investments may decline, sometimes rapidly and unpredictably, simply because of economic changes or other local, regional or global events, including public health crises (including the occurrence of a contagious disease or illness), terrorism, war, changing interest rate levels, the imposition of new or additional tariffs, or global conflicts, any of which can affect large portions of the securities markets. It includes the risk that a particular style of investing may be underperforming the market generally.

 

•  

Foreign (Non-U.S.) Risk: Investments in securities of non-U.S. issuers may involve more risk than those of U.S. issuers. These securities may fluctuate more widely in price and may be more difficult to trade due to adverse market, economic, political, regulatory or other factors. Investments in emerging market countries such as China may involve more risk than investments in developed countries because the markets in emerging market countries are less developed and less liquid and are subject to

 

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increased economic, political, regulatory, or other uncertainties. In addition, the value of the Fund’s investments may decline because of factors such as unfavorable or unsuccessful government actions and reduction in government or central bank support.

 

•  

China/Single Country Risk: Investments in issuers located in a particular country or geographic region typically involve more risk than investments in U.S. issuers because of particular market factors affecting that country or region, including political instability, geopolitical risks or unpredictable economic conditions. Risks of the Fund’s investments in securities of companies economically tied to China may include the volatility of the Chinese stock market; the Chinese economy’s heavy dependence on exports, which may be affected adversely by trade barriers or disputes or may decrease, sometimes significantly, when the world economy weakens; and the continuing importance of the role of the Chinese Government, which may take legal or regulatory actions that affect the contractual arrangements of a company or economic and market practices, and cause the value of the securities of an issuer held by the Fund to decrease significantly. 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 the economy of Asian countries and a commensurately negative impact on the Fund. In addition, the Fund’s investments in companies owned or controlled directly or indirectly by the central, provincial or municipal governments of the People’s Republic of China or by the People’s Liberation Army (the military arm of the Chinese Communist Party) involve risks that political changes, social instability, regulatory uncertainty, adverse diplomatic developments, asset expropriation or nationalization, economic sanctions, trade embargos, cancellation of investors’ interests, or confiscatory taxation could adversely affect the performance of such companies and therefore investments by the Fund in those companies. China has a complex territorial dispute regarding the sovereignty of Taiwan and has made threats of invasion. Military conflict between China and Taiwan may adversely affect securities of Chinese, Taiwan-based and other issuers both in and outside the region. While the Chinese economy has grown at a rapid rate in recent years, the rate of growth has been declining, and there can be no assurance that China’s economy will continue to grow in the future. Investments in China A shares are subject to various licenses and quotas that may restrict daily trading and to additional risks that could affect liquidity compared to investments in companies in developed markets. Investments in China H shares are subject to the risk that the performance of the Hong Kong stock market may have little to no correlation to the performance of the Chinese stock market, and the Hong Kong stock market may behave differently from the Chinese stock market. Risks of investments in companies based in Hong Kong include heavy reliance on the Chinese economy, plus regional Asian and global economies such as the U.S. economy, which makes these investments vulnerable to changes in these economies.

 

•  

Currency Risk: Fluctuations in currency exchange rates may negatively affect the value of the Fund’s investments in equity securities denominated in foreign currencies or reduce the Fund’s returns. Emerging market currencies may be more volatile and less liquid, and subject to significantly greater risk of currency controls and convertibility restrictions, than currencies of developed countries.

 

•  

Depositary Receipts Risk: Investing in depositary receipts involves risks that are similar to the risks of direct investments in foreign securities. For example, investing in depositary receipts may involve risks relating to political, economic or regulatory conditions in foreign countries. In addition, the issuers of the securities underlying certain depositary receipts are under no obligation to distribute shareholder communications or pass through any voting rights with respect to the deposited securities to the holders of such receipts.

 

•  

Illiquid Investments Risk: Illiquid investments risk exists when certain investments are or become difficult to purchase or sell. Difficulty in selling such investments may result in sales at disadvantageous prices affecting the value of your investment in the Fund. Causes of illiquid investments risk may include low trading volumes and large positions. Foreign fixed-income securities may have more illiquid investments risk because secondary trading markets for these securities may be smaller and less well-developed and the securities may trade less frequently than domestic securities. Illiquid investments risk may be higher in a rising interest rate environment, when the value and liquidity of fixed-income securities generally go down.

 

•  

Sector Risk: The Fund may have more risk because it may invest to a significant extent in one or more particular market sectors, such as the information technology sector. To the extent it does so, market or economic factors affecting the relevant sector(s) could have a major effect on the value of the Fund’s investments.

 

•  

Management Risk: The Fund is subject to management risk because it is an actively-managed investment fund. The Adviser will apply its investment techniques and risk analyses in making investment decisions, but there is no guarantee that its techniques will produce the intended results. Some of these techniques may incorporate, or rely upon, quantitative models, but there is no guarantee that these models will generate accurate forecasts, reduce risk or otherwise perform as expected.

As with all investments, you may lose money by investing in the Fund.

 

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BAR CHART AND PERFORMANCE INFORMATION

The bar chart and performance information provide an indication of the historical risk of an investment in the Fund by showing:

 

•  

how the Fund’s performance changed from year to year over the life of the Fund; and

 

•  

how the Fund’s average annual returns for one year, five years and since inception compare to those of a broad-based securities market index.

You may obtain updated performance information on the Fund’s website at www.abfunds.com (click on “Investments—Mutual Funds”).

The Fund’s past performance before and after taxes, of course, does not necessarily indicate how it will perform in the future.

Bar Chart

The annual returns in the bar chart are for the Fund’s Class A shares and do not reflect sales loads. If sales loads were reflected, returns would be less than those shown. Through September 30, 2026, the year-to-date unannualized return for Class A shares was -4.01%.

 

 

LOGO

During the period shown in the bar chart, the Fund’s:

Best Quarter was up 27.93%, 1st quarter, 2019; and Worst Quarter was down -23.81%, 3rd quarter, 2022.

Performance Table

Average Annual Total Returns

(For the periods ended December 31, 2025)

 

           1 Year        5 Years       

Since

Inception**

      
Class A*   Return Before Taxes      27.76%          -3.68%          1.48%    
 

 

  Return After Taxes on Distributions      25.78%          -4.16%          1.11%    
 

 

    Return After Taxes on Distributions and Sale of Fund Shares      16.77%          -2.77%          1.14%      
Advisor Class   Return Before Taxes      33.84%          -2.61%          2.32%      

MSCI China All Shares Index

(reflects no deduction for fees, expenses, or taxes)

     28.94%          -2.45%          2.93%      

 

*

After-tax returns:

 

  –

Are shown for Class A shares only and will vary for the other Classes of shares because these Classes have different expense ratios;

 

  –

Are estimates based on the highest historical individual federal marginal income tax rates, and do not reflect the impact of state and local taxes; actual after-tax returns depend on an individual investor’s tax situation and are likely to differ from those shown; and

 

  –

Are not relevant to investors who hold fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

 

**

Inception date for all Classes is July 25, 2018.

 

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INVESTMENT ADVISER

AllianceBernstein L.P. is the investment adviser for the Fund.

PORTFOLIO MANAGERS

The following table lists the persons responsible for day-to-day management of the Fund’s portfolio:

 

Employee    Length of Service    Title
Kate Huang    Since 2025    Vice President of the Adviser
John Lin    Since 2018    Senior Vice President of the Adviser

PURCHASE AND SALE OF FUND SHARES

Purchase Minimums

The following table describes the initial and subsequent minimum purchase amounts for each class of shares, which are subject to waiver in certain circumstances.

 

      Initial    Subsequent
Class A shares, including traditional IRAs and Roth IRAs    $2,500    $50
Automatic Investment Program    None    $50
If initial minimum investment is
less than $2,500, then
$200 monthly until account
balance reaches $2,500
Advisor Class shares (only available to fee-based programs or through other limited arrangements and certain commission-based brokerage arrangements)    None    None
Class A shares are available at net asset value, without an initial sales charge, to 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit-sharing and money purchase pension plans, defined benefit plans, and non-qualified deferred compensation plans where in each case plan level or omnibus accounts are held on the books of the Fund.    None    None

You may sell (redeem) your shares each day the New York Stock Exchange is open. You may sell your shares through your financial intermediary or by mail (AllianceBernstein Investor Services, Inc., P.O. Box 786003, San Antonio, TX 78278-6003) or telephone ((800) 221-5672).

TAX INFORMATION

The Fund may pay income dividends or make capital gains distributions, which may be subject to U.S. federal income taxes and taxable as ordinary income or capital gains, and may also be subject to state and local taxes.

PAYMENTS TO BROKER-DEALERS AND OTHER FINANCIAL INTERMEDIARIES

If you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank or a group retirement plan), the Fund and its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other financial intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

 

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PRO-0103-ACE-1026     LOGO  

 

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