0001129870 abt1:S000010412Member abt1:C000028756Member 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member abt1:C000028757Member 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member abt1:C000028755Member 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member abt1:C000028758Member 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member abt1:C000028759Member 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member abt1:C000028760Member 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member abt1:C000028761Member 2011-03-02 2012-03-01 0001129870 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member rr:AfterTaxesOnDistributionsMember abt1:C000028755Member 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member rr:AfterTaxesOnDistributionsAndSalesMember abt1:C000028755Member 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member abt1:RussellTwentyFiveHundredTmValueIndexMember 2011-03-02 2012-03-01 0001129870 abt1:S000010412Member abt1:RussellTwentyFiveHundredIndexMember 2011-03-02 2012-03-01 pure iso4217:USD 1093 1073 EXAMPLES 1092 <div style="display:none">~ http://www.AllianceBernstein.com/role/ScheduleShareholderFeesAllianceBernsteinDiscoveryValueFund column period compact * ~</div> 2012-09-30 www.AllianceBernstein.com 1093 1073 536 850 686 504 0.4192 ALLIANCEBERNSTEIN DISCOVERY VALUE FUND (FORMERLY, ALLIANCEBERNSTEIN SMALL/MID CAP VALUE FUND) SHAREHOLDER FEES (fees paid directly from your investment) ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment) 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 Fund 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 year, the Fund's portfolio turnover rate was 72% of the average value of its portfolio. 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 AllianceBernstein Mutual Funds. 100000 <ul type="square"><li style="margin-left: -15px">how the Fund's performance changed from year to year over the life of the Fund; and</li></ul><ul type="square"><li style="margin-left: -15px">how the Fund's average annual returns for one, five and ten years compare to those of a broad-based securities market index.</li></ul> 0.0425 0 0 0 0 0 0 <div style="display:none">~ http://www.AllianceBernstein.com/role/ScheduleAnnualFundOperatingExpensesAllianceBernsteinDiscoveryValueFund column period compact * ~</div> 0.1188 Other ALLIANCEBERNSTEIN TRUST 2012-11-01 This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. 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 AllianceBernstein 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 55 of this Prospectus and in Purchase of Shares--Sales Charge Reduction Programs for Class A Shares on page 115 of the Funds' SAI. 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 those periods. The Examples also assume that your investment has a 5% return each year and that the Fund's operating expenses stay the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be: PRINCIPAL STRATEGIES: Calendar Year End (%) During the period shown in the bar chart, the Fund's: BEST QUARTER WAS UP 24.44%, 3RD QUARTER, 2009; AND WORST QUARTER WAS DOWN -25.46%, 4TH QUARTER, 2008. PERFORMANCE TABLE AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, 2011) Are not relevant to investors who hold fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. 606 549 302 99 159 127 93 290 397 493 309 624 811 837 206 202 2163 2317 -0.0819 <div style="display:none">~ http://www.AllianceBernstein.com/role/ScheduleAnnualTotalReturnsAllianceBernsteinDiscoveryValueFundBarChart column period compact * ~</div> 2003-11-03 2005-03-01 2005-03-01 2011-11-30 0001129870 INVESTMENT OBJECTIVE FEES AND EXPENSES OF THE FUND PORTFOLIO TURNOVER For the share classes listed below, you would pay the following expenses if you did not redeem your shares at the end of the period: The Fund invests primarily in a diversified portfolio of equity securities of small- to mid-capitalization U.S. companies, generally representing 60 to 125 companies. Under normal circumstances, the Fund invests at least 80% of its net assets in securities of small- to mid-capitalization companies. For purposes of this policy, small- to mid-capitalization companies are those that, at the time of investment, fall within the capitalization range between the smallest company in the Russell 2500(TM) Value Index and the greater of $5 billion or the market capitalization of the largest company in the Russell 2500(TM) Value Index. Because the Fund's definition of small- to mid-capitalization companies is dynamic, the lower and upper limits on market capitalization will change with the markets. As of December 31, 2011, there were approximately 1,693 small- to mid-capitalization companies, representing a market capitalization range from approximately $37 million to approximately $7.463 billion. The Fund invests in companies that are determined by the Adviser to be undervalued, using the Adviser's fundamental value approach. In selecting securities for the Fund's portfolio, the Adviser uses its fundamental and quantitative research to identify companies whose long-term earnings power is not reflected in the current market price of their securities. In selecting securities for the Fund's portfolio, the Adviser looks for companies with attractive valuation (for example, with low price to book ratios) and compelling success factors (for example, momentum and return on equity). The Adviser then uses this information to calculate an expected return. Returns and rankings are updated on a daily basis. The rankings are used to determine prospective candidates for further fundamental research and, subsequently, possible addition to the portfolio. Typically, the Adviser's fundamental research analysts focus their research on the most attractive 20% of the universe. The Adviser typically projects a company's financial performance over a full economic cycle, including a trough and a peak, within the context of forecasts for real economic growth, inflation and interest rate changes. The Adviser focuses on the valuation implied by the current price, relative to the earnings the company will be generating five years from now, or "normalized" earnings, assuming average mid-economic cycle growth for the fifth year. The Fund's management team and other senior investment professionals work in close collaboration to weigh each investment opportunity identified by the research staff relative to the entire portfolio and determine the timing and position size for purchases and sales. Analysts remain responsible for monitoring new developments that would affect the securities they cover. The team will generally sell a security when it no longer meets appropriate valuation criteria, although sales may be delayed when positive return trends are favorable. Typically, growth in the size of a company's market capitalization relative to other domestically traded companies will not cause the Fund to dispose of the security. The Adviser seeks to manage overall portfolio volatility relative to the universe of companies that comprise the lowest 20% of the total U.S. market capitalization by favoring promising securities that offer the best balance between return and targeted risk. At times, the Fund may favor or disfavor a particular sector compared to that universe of companies. The Fund may invest significantly in companies involved in certain sectors that constitute a material portion of the universe of small- and mid-capitalization companies, such as financial services and consumer services. The Fund may enter into derivatives transactions, such as options, futures contracts, forwards, and swap agreements. The Fund may use options strategies involving the purchase and/or writing of various combinations of call and/or put options, including on individual securities and stock indexes, futures contracts (including futures contracts on individual securities and stock indexes) or shares of ETFs. These transactions may be used, for example, in an effort to earn extra income, to adjust exposure to individual securities or markets, or to protect all or a portion of the Fund's portfolio from a decline in value, sometimes within certain ranges. The Fund may, at times, invest in shares of ETFs in lieu of making direct investments in equity securities. ETFs may provide more efficient and economical exposure to the type of companies and geographic locations in which the Fund seeks to invest than direct investments. <ul type="square"><li style="margin-left: -15px">MARKET RISK: The value of the Fund's investments will fluctuate as the stock or bond market fluctuates. The value of its investments may decline, sometimes rapidly and unpredictably, simply because of economic changes or other events that affect large portions of the market. It includes the risk that a particular style of investing, such as the Fund's value approach, may be underperforming the market generally.</li></ul><ul type="square"><li style="margin-left: -15px">CAPITALIZATION RISK: Investments in small- and mid-capitalization companies may be more volatile than investments in large-capitalization companies. Investments in small-capitalization companies may have additional risks because these companies have limited product lines, markets or financial resources.</li></ul><ul type="square"><li style="margin-left: -15px">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 less liquid due to adverse market, economic, political, regulatory or other factors.</li></ul><ul type="square"><li style="margin-left: -15px">CURRENCY RISK: Fluctuations in currency exchange rates may negatively affect the value of the Fund's investments or reduce its returns.</li></ul><ul type="square"><li style="margin-left: -15px">DERIVATIVES RISK: Investments in derivatives may be illiquid, difficult to price, and leveraged so that small changes may produce disproportionate losses for the Fund, and may be subject to counterparty risk to a greater degree than more traditional investments.</li></ul><ul type="square"><li style="margin-left: -15px">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 for the Fund, but there is no guarantee that its techniques will produce the intended results.</li></ul>As with all investments, you may lose money by investing in the Fund. As with all investments, you may lose money by investing in the Fund. Are estimates based on the highest historical individual federal marginal income tax rates, and do not reflect the impact of state and local taxes; 2009-09-30 0.2444 WORST QUARTER 2008-12-31 0 0 0 0 0.01 0.04 0 0.0017 0.0023 0.0019 0.0017 0.0011 0.002 0.0026 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.0091 0.0125 0.0156 0.0097 0.0199 0.0203 0.0127 -0.3456 -0.084 -0.1228 -0.1307 -0.0699 -0.1202 -0.0993 -0.0816 -0.0863 -0.0842 -0.082 0.0718 0.0637 0.0618 0.072 0.0689 0.0796 0.0747 0.077 0.0796 0.0716 0.0657 false 2012-11-01 2012-03-01 The Fund's investment objective is long-term growth of capital. PRINCIPAL RISKS 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:<ul type="square"><li style="margin-left: -15px">how the Fund's performance changed from year to year over the life of the Fund; and</li></ul><ul type="square"><li style="margin-left: -15px">how the Fund's average annual returns for one, five and ten years compare to those of a broad-based securities market index.</li></ul>You may obtain updated performance information on the Fund's website at www.AllianceBernstein.com (click on "Pricing & Performance"). 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, 2012, the year-to-date unannualized return for Class A shares was 11.88%. (NOT CURRENTLY OFFERED TO NEW INVESTORS) 0.72 The Fund's past performance before and after taxes, of course, does not necessarily indicate how it will perform in the future. Are shown for Class A shares only and will vary for Class B, Class C and Advisor Class shares because these Classes have different expense ratios; The annual returns in the bar chart are for the Fund's Class A shares and do not reflect sales loads. BEST QUARTER -0.2546 0 0 0 0 0 0 0 0.0075 0.0075 0.0075 0.0075 0.0075 0.0075 0.0075 0 0.0025 0.005 0 0.01 0.01 0.003 0.0022 0.0028 0.0024 0.0022 0.0031 0.0025 0.0016 1120 1511 1856 1190 2317 2163 1894 637 624 0.1891 0.0789 0.1365 0.0232 0.4181 0.2651 -0.0336 -0.0251 0.0105 0.0054 0.0084 0.0171 0.012 0.0173 0.0222 0.0196 0.0221 -0.0058 0.0124 <div style="display:none">~ http://www.AllianceBernstein.com/role/ScheduleExpenseExampleAllianceBernsteinDiscoveryValueFund column period compact * ~</div> <div style="display:none">~ http://www.AllianceBernstein.com/role/ScheduleExpenseExampleNoRedemptionAllianceBernsteinDiscoveryValueFund column period compact * ~</div> <div style="display:none">~ http://www.AllianceBernstein.com/role/ScheduleAverageAnnualTotalReturnsTransposedAllianceBernsteinDiscoveryValueFund column period compact * ~</div> year-to-date Class B shares automatically convert to Class A shares after eight years. The CDSC decreases over time. For Class B shares the CDSC decreases 1.00% annually to 0% after the fourth year. For Class C shares, the CDSC is 0% after the first year. After-tax returns: - Are shown for Class A shares only and will vary for Class B, Class C and Advisor Class 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 dates: 11/3/03 for Class R shares, and 3/1/05 for Class K and Class I shares. Performance information for periods prior to the inception of Class R, Class K and Class I shares is the performance of the Fund's Class A shares adjusted to reflect the higher expense ratio of Class R shares and the lower expense ratios of Class K and Class I shares, respectively.