0001104659-13-004027.txt : 20130123 0001104659-13-004027.hdr.sgml : 20130123 20130123095938 ACCESSION NUMBER: 0001104659-13-004027 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 7 FILED AS OF DATE: 20130123 DATE AS OF CHANGE: 20130123 EFFECTIVENESS DATE: 20130123 FILER: COMPANY DATA: COMPANY CONFORMED NAME: RBB FUND INC CENTRAL INDEX KEY: 0000831114 IRS NUMBER: 510312196 STATE OF INCORPORATION: MD FISCAL YEAR END: 0831 FILING VALUES: FORM TYPE: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 033-20827 FILM NUMBER: 13541738 BUSINESS ADDRESS: STREET 1: 400 BELLEVUE PKWY STE 100 CITY: WILMINGTON STATE: DE ZIP: 19809 BUSINESS PHONE: 3027911700 MAIL ADDRESS: STREET 1: 400 BELLEVUE PKWY STREET 2: SUITE 152 CITY: WILMINGTON STATE: DE ZIP: 19809 FORMER COMPANY: FORMER CONFORMED NAME: FUND INC /DE/ DATE OF NAME CHANGE: 19600201 0000831114 S000001093 RBB MONEY MARKET PORTFOLIO C000002980 BEDFORD BDMXX C000002981 SANSOM SANXX 0000831114 S000001106 ROBECO BP ALL-CAP VALUE FUND C000002997 INSTITUTIONAL BPAIX 0000831114 S000001108 ROBECO BP LONG/SHORT EQUITY FUND C000003002 INVESTOR BPLEX 0000831114 S000035438 Robeco Boston Partners Global Equity Fund C000108833 Investor Class BPGRX 0000831114 S000035439 Robeco Boston Partners International Equity Fund C000108835 Investor Class BPQRX 497 1 a12-28575_29497.htm 497

 

RULE 497 DOCUMENT

 

These materials provide, in interactive data format using the eXtensible Business Reporting Language, information relating to Registrant’s Robeco Investment Funds Institutional and Investor Class prospectuses dated December 31, 2012, as revised January 4, 2013, that were filed with the with the Securities and Exchange Commission pursuant to Rule 497(c) under the Securities Act of 1933, as amended, on January 4, 2013 (Accession No. 0001104659-13-000792).

 



 

EXHIBIT INDEX

 

Exhibit No.

 

Description

 

 

 

101.INS

 

XBRL Instance Document

 

 

 

101.CAL

 

XBRL Taxonomy Extension Calculation Linkbase

 

 

 

101.SCH

 

XBRL Taxonomy Extension Schema Document

 

 

 

101. DEF

 

XBRL Taxonomy Extension Definition Linkbase

 

 

 

101. LAB

 

XBRL Taxonomy Extension Label Linkbase

 

 

 

101.PRE

 

XBRL Taxonomy Extension Presentation Linkbase

 


EX-101.INS 2 ck0000831114-20120831.xml XBRL INSTANCE DOCUMENT Other 2012-08-31 0000831114 2013-01-04 RBB FUND INC false 2013-01-04 2012-12-31 The Fund is non-diversified. Compared to other funds, the Fund may invest more of its assets in a smaller number of companies. Gains or losses on a single stock may have greater impact on the Fund. <tt>The Fund pays transaction costs, such as commissions, when it buys and sells<br />securities (or "turns over" its portfolio). A higher portfolio turnover rate may<br />indicate higher transaction costs and may result in higher taxes when Fund<br />shares are held in a taxable account. These costs, which are not reflected in<br />Total annual Fund operating expenses or in the Example, affect the Fund's<br />performance. During the fiscal year ended August 31, 2012, the portfolio<br />turnover rate for the Fund was 81%.</tt> <div style="display:none">~ http://www.astonfunds.com/role/ExpenseExample_S000035439Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <tt>The Fund seeks to provide long-term capital growth.</tt> <tt>This Example is intended to help you compare the cost of investing in the Fund<br />with the cost of investing in other mutual funds. The Example assumes that you<br />invest $10,000 in the Fund for the time periods indicated and that you sell all<br />of your shares at the end of the period. The Example also assumes that your<br />investment has a 5% return each year and that the operating expenses of the Fund<br />remain the same. Although your actual costs may be higher or lower, based on<br />these assumptions your costs would be:</tt> <tt>The Fund pursues its objective by investing, under normal circumstances, at<br />least 80% of its net assets (including borrowings for investment purposes) <br />in a non-diversified portfolio of equity and equity-related securities issued <br />by non-U.S. companies of any capitalization size. The Fund may invest in all <br />types of equity and equity-related securities, including without limitation<br />exchange-traded and over-the-counter common and preferred stocks, warrants,<br />options, rights, convertible securities, sponsored and unsponsored depositary<br />receipts and shares, trust certificates, participatory notes, limited<br />partnership interests, shares of other investment companies (including<br />exchanged-traded funds ("ETFs")), real estate investment trusts ("REITs"), and<br />equity participations. An equity participation is a type of loan that gives the<br />lender a portion of equity ownership in a property, in addition to principal and<br />interest payments. A convertible security is a bond, debenture, note, preferred<br />stock or other security that may be converted into or exchanged for a prescribed<br />amount of common stock of the same or a different issuer within a particular<br />period of time at a specified price or formula.<br /> <br />The Fund defines non-U.S. companies as companies (i) that are organized under<br />the laws of a foreign country; (ii) whose principal trading market is in a<br />foreign country; or (iii) that have a majority of their assets, or that derive <br />a significant portion of their revenue or profits from businesses, investments <br />or sales, outside of the United States. The Fund principally will be invested <br />in issuers located in countries with developed securities markets, but may also<br />invest in issuers located in emerging markets.<br /> <br />The Fund generally invests in the equity securities of issuers believed by<br />Robeco to be undervalued in the marketplace, focusing on issuers that combine<br />attractive valuations with catalysts for change. Robeco applies a bottom-up<br />stock selection process (i.e., one that focuses primarily on issuer-specific<br />factors) in managing the Fund, using a combination of fundamental and<br />quantitative analysis. In selecting investments for the Fund, Robeco considers<br />various factors such as price-to-book value, price-to-sales and earnings ratios,<br />dividend yields, strength of management, and cash flow to identify securities<br />that are trading at a price that appears to be lower than the issuer's inherent<br />value.<br /> <br />Robeco will sell a stock when it no longer meets one or more investment criteria, <br />either through obtaining target value or due to an adverse change in fundamentals <br />or business momentum. Each holding has a target valuation established at purchase, <br />which Robeco constantly monitors and adjusts as appropriate.<br /> <br />The Fund may (but is not required to) invest in derivatives, including put and<br />call options, futures, forward contracts and swaps, in lieu of investing directly <br />in a security, currency or instrument, for hedging and non-hedging purposes.<br /> <br />The Fund may invest up to 15% of its net assets in illiquid securities, including <br />securities that are illiquid by virtue of the absence of a readily available market <br />or legal or contractual restrictions on resale.<br /> <br />The Fund may participate as a purchaser in initial public offerings of securities <br />("IPO"). An IPO is a company's first offering of stock to the public. The Fund may <br />also seek to increase its income by lending portfolio securities.<br /> <br />While Robeco intends to fully invest the Fund's assets at all times in accordance <br />with the above-mentioned policies, the Fund reserves the right to hold up to 100% <br />of its assets, as a temporary defensive measure, in cash and eligible U.S. <br />dollar-denominated money market instruments. Robeco will determine when market <br />conditions warrant temporary defensive measures.</tt> SUMMARY SECTION Example No performance information is available for the Fund because it has not yet been in operation for a full calendar year. Investment Objective Investors may lose money. Summary of Principal Risks Shareholder Fees (fees paid directly from your investment) 0.81 Performance Information 1-888-261-4073 Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Portfolio Turnover <tt>&#x2022; Management Risk. The Fund is subject to the risk of poor stock selection. In<br />other words, the individual stocks in the Fund may not perform as well as<br />expected, and/or the Fund's portfolio management practices do not work to<br />achieve their desired result.<br /> <br />&#x2022; Market Risk. The net asset value ("NAV") of the Fund will change with changes<br />in the market value of its portfolio positions. Investors may lose money.<br />Although the Fund will invest in stocks Robeco believes to be undervalued, there<br />is no guarantee that the prices of these stocks will not move even lower.<br /> <br />&#x2022; Foreign Securities Risk. International investing is subject to special risks,<br />including, but not limited to, currency exchange rate volatility, political,<br />social or economic instability, and differences in taxation, auditing and other<br />financial practices. The Fund may invest in securities of foreign issuers either<br />directly or through depositary receipts. Depositary receipts may be available<br />through "sponsored" or "unsponsored" facilities. Holders of unsponsored<br />depositary receipts generally bear all of the costs of the unsponsored facility.<br />The depository of an unsponsored facility is frequently under no obligation to<br />distribute shareholder communications received from the issuer of the deposited<br />security or to pass through, to the holders of the receipts, voting rights with<br />respect to the deposited securities. The depository of unsponsored depositary<br />receipts may provide less information to receipt holders. Participatory notes<br />("P-notes") are equity access products structured as debt obligations and used<br />by investors to take positions in certain foreign securities. P-notes present<br />similar risks to investing directly in such securities and also expose investors<br />to counterparty risk.<br /> <br />&#x2022; Emerging Markets Risk. Investment in emerging market securities involves<br />greater risk than that associated with investment in securities of issuers in<br />developed foreign countries. These risks include volatile currency exchange<br />rates, periods of high inflation, increased risk of default, greater social,<br />economic and political uncertainty and instability, less governmental<br />supervision and regulation of securities markets, weaker auditing and financial<br />reporting standards, lack of liquidity in the markets, and the significantly<br />smaller market capitalizations of emerging market issuers.<br /> <br />&#x2022; Currency Risk. Investment in foreign securities also involves currency risk<br />associated with securities that trade or are denominated in currencies other<br />than the U.S. dollar and which may be affected by fluctuations in currency<br />exchange rates. An increase in the strength of the U.S. dollar relative to a<br />foreign currency may cause the U.S. dollar value of an investment in that<br />country to decline. Foreign currencies also are subject to risks caused by<br />inflation, interest rates, budget deficits and low savings rates, political<br />factors and government controls.<br /> <br />&#x2022; Convertible Securities Risk. Securities that can be converted into common<br />stock, such as certain securities and preferred stock, are subject to the usual<br />risks associated with fixed income investments, such as interest rate risk and<br />credit risk. In addition, because they react to changes in the value of the<br />equity securities into which they will convert, convertible securities are also<br />subject to the risks associated with equity securities.<br /> <br />&#x2022; Options Risk. An option is a type of derivative instrument that gives the<br />holder the right (but not the obligation) to buy (a "call") or sell (a "put") <br />an asset in the near future at an agreed upon price prior to the expiration <br />date of the option. The Fund may "cover" a call option by owning the security <br />underlying the option or through other means. The value of options can be <br />highly volatile, and their use can result in loss if Robeco is incorrect in <br />its expectation of price fluctuations.<br /> <br />&#x2022; Derivatives Risk. The Fund's investments in derivative instruments, which<br />include futures and options on securities, securities indices or currencies,<br />options on these futures, forward foreign currency contracts and interest rate<br />or currency swaps, may be leveraged and result in losses exceeding the amounts<br />invested.<br /> <br />&#x2022; REITs Risk. REITs may be affected by economic forces and other factors related<br />to the real estate industry. Investing in REITs may involve risks similar to<br />those associated with investing in small capitalization companies. REITs may<br />have limited financial resources, may trade less frequently and in a limited<br />volume and may be subject to more abrupt or erratic price movements than larger <br />company securities. Historically, small capitalization stocks, such as REITs, <br />have been more volatile in price than the larger capitalization stocks included <br />in the S&amp;P 500&#xAE; Index.<br /> <br />&#x2022; Small/Mid-Cap Companies Risk. Investing in securities of companies with micro,<br />small or mid-sized capitalizations tends to be riskier than investing in<br />securities of companies with large capitalizations. Securities of companies with<br />micro, small and mid-sized capitalizations tend to be more volatile than those<br />of large cap companies and, on occasion, may fluctuate in the opposite direction<br />of large cap company securities or the broader stock market averages. The small<br />capitalization equity securities in which the Fund invests may be traded only in<br />the over-the-counter market or on a regional securities exchange, may be listed<br />only in the quotation service commonly known as the "pink sheets," and may not<br />be traded every day or in the volume typical of trading on a national securities<br />exchange. These securities may also be subject to wide fluctuations in market<br />value. The trading market for any given small capitalization equity security may<br />be sufficiently small as to make it difficult for the Fund to dispose of a<br />substantial block of such securities. Redemptions may require the Fund to sell<br />its small capitalization securities at a discount from market prices or during<br />periods when, in Robeco's judgment, such sale is not desirable. Moreover, the<br />lack of an efficient market for these securities may make them difficult to<br />value.<br /> <br />&#x2022; Securities Lending Risk. The Fund may lend portfolio securities to institutions, <br />such as certain broker-dealers. The Fund may experience a loss or delay in the <br />recovery of its securities if the borrowing institution breaches its agreement <br />with the Fund.<br /> <br />&#x2022; Exchange Traded Fund Risk. Exchange traded funds ("ETFs") are a type of<br />investment company bought and sold on a securities exchange. An ETF represents a<br />fixed portfolio of securities designed to track a particular market index. The<br />risks of owning an ETF generally reflect the risks of owning the underlying<br />securities that they are designed to track, although lack of liquidity in an ETF<br />could result in its being more volatile. The Fund may incur brokerage fees in<br />connection with its purchase of ETF shares.<br /> <br />&#x2022; Illiquid Securities Risk. Investing in illiquid securities is subject to<br />certain risks, such as limitations on resale and uncertainty in determining<br />valuation. Limitations on resale may adversely affect the marketability of<br />portfolio securities and the Fund might be unable to dispose of restricted or<br />other illiquid securities promptly or at reasonable prices and might thereby<br />experience difficulty satisfying redemptions within seven days. The Fund might,<br />in order to dispose of restricted securities, have to register securities<br />resulting in additional expense and delay. Adverse market conditions could<br />impede such a public offering of such securities.<br /> <br />&#x2022; IPO Risk. IPO risk is the risk that the market value of IPO shares will<br />fluctuate considerably due to certain factors, such as the absence of a prior<br />public market, unseasoned trading, the small number of shares available for<br />trading and limited information about the issuer. The purchase of IPO shares <br />may involve high transaction costs. IPO shares are subject to market risk and<br />liquidity risk. When the Fund's asset base is small, a significant portion of<br />the Fund's performance could be attributable to investments in IPOs, because<br />such investments would have a magnified impact on the Fund. As the Fund's assets<br />grow, the effect of the Fund's investments in IPOs on the Fund's performance<br />probably will decline, which could reduce the Fund's performance. Because of the<br />price volatility of IPO shares, the Fund may choose to hold IPO shares for a<br />very short period of time. This may increase the turnover of the Fund's<br />portfolio and may lead to increased expenses to the Fund, such as commissions<br />and transaction costs. In addition, Robeco cannot guarantee continued access to<br />IPOs.<br /> <br />&#x2022; Non-Diversification Risk. The Fund is non-diversified. Compared to other<br />funds, the Fund may invest more of its assets in a smaller number of companies.<br />Gains or losses on a single stock may have greater impact on the Fund.</tt> Expenses and Fees Summary of Principal Investment Strategies www.robecoinvest.com <tt>No performance information is available for the Fund because it has not yet been<br />in operation for a full calendar year. The performance information, when available, <br />will provide some indication of the risks of investing in the Fund. The Fund intends <br />to evaluate its performance as compared to that of the MSCI&#xAE; EAFE Index. Updated <br />performance information will be available at www.robecoinvest.com or 1-888-261-4073.</tt> <tt>This table describes the fees and expenses that you may pay if you buy and hold<br />Investor Class shares of the Fund.</tt> <div style="display:none">~ http://www.astonfunds.com/role/OperatingExpensesData_S000035439Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/ShareholderFeesData_S000035439Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> BPQRX 0.00 158 998 -0.0247 4070 -0.0100 1854 0.0287 0.0090 2013-12-31 0.0100 0.00 0.0025 0.0155 0.0402 0.00 The Fund is non-diversified. Compared to other funds, the Fund may invest more of its assets in a smaller number of companies. Gains or losses on a single stock may have greater impact on the Fund. <tt>The Fund pays transaction costs, such as commissions, when it buys and sells<br />securities (or "turns over" its portfolio). A higher portfolio turnover rate <br />may indicate higher transaction costs and may result in higher taxes when Fund<br />shares are held in a taxable account. These costs, which are not reflected in<br />Total annual Fund operating expenses or in the Example, affect the Fund's<br />performance. During the fiscal year ended August 31, 2012, the portfolio<br />turnover rate for the Fund was 83%.</tt> <div style="display:none">~ http://www.astonfunds.com/role/ExpenseExample_S000035438Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <tt>The Fund seeks to provide long-term capital growth.</tt> <tt>This Example is intended to help you compare the cost of investing in the Fund<br />with the cost of investing in other mutual funds. The Example assumes that you<br />invest $10,000 in the Fund for the time periods indicated and that you sell all<br />of your shares at the end of the period. The Example also assumes that your<br />investment has a 5% return each year and that the operating expenses of the Fund<br />remain the same. Although your actual costs may be higher or lower, based on<br />these assumptions your costs would be:</tt> <tt>The Fund pursues its objective by investing, under normal circumstances, at<br />least 80% of its net assets (including borrowings for investment purposes) <br />in a non-diversified portfolio of equity and equity-related securities issued <br />by U.S. and non-U.S. companies of any capitalization size. The Fund may invest <br />in all types of equity and equity-related securities, including without <br />limitation exchange-traded and over-the-counter common and preferred stocks, <br />warrants, options, rights, convertible securities, sponsored and unsponsored <br />depositary receipts and shares, trust certificates, participatory notes, <br />limited partnership interests, shares of other investment companies (including<br />exchanged-traded funds ("ETFs")) and real estate investment trusts ("REITs"),<br />and equity participations. An equity participation is a type of loan that gives<br />the lender a portion of equity ownership in a property, in addition to principal<br />and interest payments. A convertible security is a bond, debenture, note,<br />preferred stock or other security that may be converted into or exchanged for a<br />prescribed amount of common stock of the same or a different issuer within a<br />particular period of time at a specified price or formula.<br /> <br />The Fund defines non-U.S. companies as companies (i) that are organized under<br />the laws of a foreign country; (ii) whose principal trading market is in a<br />foreign country; or (iii) that have a majority of their assets, or that derive a<br />significant portion of their revenue or profits from businesses, investments or<br />sales, outside of the United States. Under normal market conditions, the Fund<br />invests significantly (ordinarily at least 40% - unless market conditions are<br />not deemed favorable by Robeco, in which case the Fund would invest at least<br />30%) in non-U.S. companies. The Fund principally will be invested in issuers<br />located in countries with developed securities markets, but may also invest in<br />issuers located in emerging markets. The Fund will allocate its assets among<br />various regions and countries, including the United States (but in no less than<br />three different countries).<br /> <br />The Fund generally invests in the equity securities of issuers believed by<br />Robeco to be undervalued in the marketplace, focusing on issuers that combine<br />attractive valuations with catalysts for change. Robeco applies a bottom-up<br />stock selection process (i.e., one that focuses primarily on issuer-specific<br />factors) in managing the Fund, using a combination of fundamental and<br />quantitative analysis. In selecting investments for the Fund, Robeco considers<br />various factors such as price-to-book value, price-to-sales and earnings ratios,<br />dividend yields, strength of management, and cash flow to identify securities<br />that are trading at a price that appears to be lower than the issuer's inherent<br />value.<br /> <br />Robeco will sell a stock when it no longer meets one or more investment<br />criteria, either through obtaining target value or due to an adverse change <br />in fundamentals or business momentum. Each holding has a target valuation<br />established at purchase, which Robeco constantly monitors and adjusts as<br />appropriate.<br /> <br />The Fund may (but is not required to) invest in derivatives, including put <br />and call options, futures, forward contracts and swaps, in lieu of investing<br />directly in a security, currency or instrument, for hedging and non-hedging<br />purposes.<br /> <br />The Fund may invest up to 15% of its net assets in illiquid securities, including <br />securities that are illiquid by virtue of the absence of a readily available <br />market or legal or contractual restrictions on resale.<br /> <br />The Fund may participate as a purchaser in initial public offerings of securities <br />("IPO"). An IPO is a company's first offering of stock to the public. The Fund may <br />also seek to increase its income by lending portfolio securities.<br /> <br />While Robeco intends to fully invest the Fund's assets at all times in accordance <br />with the above-mentioned policies, the Fund reserves the right to hold up to 100% <br />of its assets, as a temporary defensive measure, in cash and eligible U.S. <br />dollar-denominated money market instruments. Robeco will determine when market <br />conditions warrant temporary defensive measures.</tt> SUMMARY SECTION Example No performance information is available for the Fund because it has not been in operation for a full calendar year. Investment Objective Investors may lose money. Summary of Principal Risks Shareholder Fees (fees paid directly from your investment) 0.83 Performance Information 1-888-261-4073 Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Portfolio Turnover <tt>&#x2022; Management Risk. The Fund is subject to the risk of poor stock selection. <br />In other words, the individual stocks in the Fund may not perform as well <br />as expected, and/or the Fund's portfolio management practices do not work <br />to achieve their desired result.<br /> <br />&#x2022; Market Risk. The net asset value ("NAV") of the Fund will change with changes<br />in the market value of its portfolio positions. Investors may lose money.<br />Although the Fund will invest in stocks Robeco believes to be undervalued, there<br />is no guarantee that the prices of these stocks will not move even lower.<br /> <br />&#x2022; Foreign Securities Risk. International investing is subject to special risks,<br />including, but not limited to, currency exchange rate volatility, political,<br />social or economic instability, and differences in taxation, auditing and other<br />financial practices. The Fund may invest in securities of foreign issuers either<br />directly or through depositary receipts. Depositary receipts may be available <br />through "sponsored" or "unsponsored" facilities. Holders of unsponsored depositary <br />receipts generally bear all of the costs of the unsponsored facility. The <br />depository of an unsponsored facility is frequently under no obligation to<br />distribute shareholder communications received from the issuer of the deposited<br />security or to pass through, to the holders of the receipts, voting rights with<br />respect to the deposited securities. The depository of unsponsored depositary<br />receipts may provide less information to receipt holders. Participatory notes<br />("P-notes") are derivative instruments used by investors to take positions in<br />certain foreign securities. P-notes present similar risks to investing directly<br />in such securities and also expose investors to counterparty risk.<br /> <br />&#x2022; Emerging Markets Risk. Investment in emerging market securities involves<br />greater risk than that associated with investment in securities of issuers in<br />developed foreign countries. These risks include volatile currency exchange<br />rates, periods of high inflation, increased risk of default, greater social,<br />economic and political uncertainty and instability, less governmental<br />supervision and regulation of securities markets, weaker auditing and financial<br />reporting standards, lack of liquidity in the markets, and the significantly<br />smaller market capitalizations of emerging market issuers.<br /> <br />&#x2022; Currency Risk. Investment in foreign securities also involves currency risk<br />associated with securities that trade or are denominated in currencies other<br />than the U.S. dollar and which may be affected by fluctuations in currency<br />exchange rates. An increase in the strength of the U.S. dollar relative to a<br />foreign currency may cause the U.S. dollar value of an investment in that<br />country to decline. Foreign currencies also are subject to risks caused by<br />inflation, interest rates, budget deficits and low savings rates, political<br />factors and government controls.<br /> <br />&#x2022; Convertible Securities Risk. Securities that can be converted into common<br />stock, such as certain securities and preferred stock, are subject to the usual<br />risks associated with fixed income investments, such as interest rate risk and<br />credit risk. In addition, because they react to changes in the value of the<br />equity securities into which they will convert, convertible securities are also<br />subject to the risks associated with equity securities.<br /> <br />&#x2022; Options Risk. An option is a type of derivative instrument that gives the<br />holder the right (but not the obligation) to buy (a "call") or sell (a "put") an<br />asset in the near future at an agreed upon price prior to the expiration date of<br />the option. The Fund may "cover" a call option by owning the security underlying<br />the option or through other means. The value of options can be highly volatile,<br />and their use can result in loss if Robeco is incorrect in its expectation of<br />price fluctuations.<br /> <br />&#x2022; Derivatives Risk. The Fund's investments in derivative instruments, which<br />include futures and options on securities, securities indices or currencies,<br />options on these futures, forward foreign currency contracts and interest rate<br />or currency swaps, may be leveraged and result in losses exceeding the amounts<br />invested.<br />&#xA0;&#xA0;<br />&#x2022; REITs Risk. REITs may be affected by economic forces and other factors related<br />to the real estate industry. Investing in REITs may involve risks similar to<br />those associated with investing in small capitalization companies. REITs may<br />have limited financial resources, may trade less frequently and in a limited<br />volume and may be subject to more abrupt or erratic price movements than larger<br />company securities. Historically, small capitalization stocks, such as REITs,<br />have been more volatile in price than the larger capitalization stocks included<br />in the S&amp;P 500&#xAE; Index.<br /> <br />&#x2022; Small/Mid-Cap Companies Risk. Investing in securities of companies with micro,<br />small or mid-sized capitalizations tends to be riskier than investing in<br />securities of companies with large capitalizations. Securities of companies with<br />micro, small and mid-sized capitalizations tend to be more volatile than those<br />of large cap companies and, on occasion, may fluctuate in the opposite direction<br />of large cap company securities or the broader stock market averages.<br /> <br />The small capitalization equity securities in which the Fund invests may be<br />traded only in the over-the-counter market or on a regional securities exchange,<br />may be listed only in the quotation service commonly known as the "pink sheets,"<br />and may not be traded every day or in the volume typical of trading on a national <br />securities exchange. These securities may also be subject to wide fluctuations in <br />market value. The trading market for any given small capitalization equity security <br />may be sufficiently small as to make it difficult for the Fund to dispose of a <br />substantial block of such securities. Redemptions may require the Fund to sell its <br />small capitalization securities at a discount from market prices or during periods <br />when, in Robeco's judgment, such sale is not desirable. Moreover, the lack of an <br />efficient market for these securities may make them difficult to value.<br /> <br />&#x2022; Securities Lending Risk. The Fund may lend portfolio securities to institutions, <br />such as certain broker-dealers. The Fund may experience a loss or delay in the <br />recovery of its securities if the borrowing institution breaches its agreement with <br />the Fund.<br /> <br />&#x2022; Exchange Traded Fund Risk. Exchange traded funds ("ETFs") are a type of<br />investment company bought and sold on a securities exchange. An ETF represents a<br />fixed portfolio of securities designed to track a particular market index. The<br />risks of owning an ETF generally reflect the risks of owning the underlying<br />securities that they are designed to track, although lack of liquidity in an ETF<br />could result in its being more volatile. The Fund may incur brokerage fees in<br />connection with its purchase of ETF shares.<br /> <br />&#x2022; Illiquid Securities Risk. Investing in illiquid securities is subject to<br />certain risks, such as limitations on resale and uncertainty in determining<br />valuation. Limitations on resale may adversely affect the marketability of<br />portfolio securities and the Fund might be unable to dispose of restricted or<br />other illiquid securities promptly or at reasonable prices and might thereby<br />experience difficulty satisfying redemptions within seven days. The Fund might,<br />in order to dispose of restricted securities, have to register securities<br />resulting in additional expense and delay. Adverse market conditions could<br />impede such a public offering of such securities.<br /> <br />&#x2022; IPO Risk. IPO risk is the risk that the market value of IPO shares will<br />fluctuate considerably due to certain factors, such as the absence of a prior<br />public market, unseasoned trading, the small number of shares available for<br />trading and limited information about the issuer. The purchase of IPO shares may<br />involve high transaction costs. IPO shares are subject to market risk and<br />liquidity risk. When the Fund's asset base is small, a significant portion of<br />the Fund's performance could be attributable to investments in IPOs, because<br />such investments would have a magnified impact on the Fund. As the Fund's assets<br />grow, the effect of the Fund's investments in IPOs on the Fund's performance<br />probably will decline, which could reduce the Fund's performance. Because of the<br />price volatility of IPO shares, the Fund may choose to hold IPO shares for a<br />very short period of time. This may increase the turnover of the Fund's<br />portfolio and may lead to increased expenses to the Fund, such as commissions<br />and transaction costs. In addition, Robeco cannot guarantee continued access to<br />IPOs.<br /><br />&#x2022; Non-Diversification Risk. The Fund is non-diversified. Compared to other<br />funds, the Fund may invest more of its assets in a smaller number of companies.<br />Gains or losses on a single stock may have greater impact on the Fund.</tt> Expenses and Fees Summary of Principal Investment Strategies www.robecoinvest.com <tt>No performance information is available for the Fund because it has not been in<br />operation for a full calendar year. The performance information, when available,<br />will provide some indication of the risks of investing in the Fund. The Fund<br />intends to evaluate its performance as compared to that of the MSCI&#xAE; World<br />Index. Updated performance information will be available at www.robecoinvest.com<br />or 1-888-261-4073.</tt> <tt>This table describes the fees and expenses that you may pay if you buy and hold<br />Investor Class shares of the Fund.</tt> <div style="display:none">~ http://www.astonfunds.com/role/OperatingExpensesData_S000035438Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/ShareholderFeesData_S000035438Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> BPGRX 0.00 158 956 -0.0226 3904 -0.0100 1774 0.0266 0.0090 2013-12-31 0.0100 0.00 0.0025 0.0155 0.0381 0.00 <tt>The Fund pays transaction costs, such as commissions, when it buys and sells<br />securities (or "turns over" its portfolio). A higher portfolio turnover rate <br />may indicate higher transaction costs and may result in higher taxes when <br />Fund shares are held in a taxable account. These costs, which are not reflected <br />in Total annual Fund operating expenses or in the Example, affect the Fund's<br />performance. During the fiscal year ended August 31, 2012, the portfolio<br />turnover rate for the Fund was 71%.</tt> <div style="display:none">~ http://www.astonfunds.com/role/ExpenseExample_S000001108Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/BarChartData_S000001108Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <tt>The Fund seeks long-term capital appreciation while reducing exposure to general<br />equity market risk. The Fund seeks a total return greater than that of the S&amp;P<br />500&#xAE; Index over a full market cycle.</tt> <tt>This Example is intended to help you compare the cost of investing in the Fund<br />with the cost of investing in other mutual funds. The Example assumes that you<br />invest $10,000 in the Fund for the time periods indicated and that you sell all<br />of your shares at the end of the period. The Example also assumes that your<br />investment has a 5% return each year and that the operating expenses of the Fund<br />remain the same. Although your actual costs may be higher or lower, based on<br />these assumptions your costs would be:</tt> Average Annual Total Returns reflects no deduction for fees, expenses or taxes <tt>The Fund invests in long positions in stocks identified by Robeco as undervalued<br />and takes short positions in stocks that Robeco has identified as overvalued.<br />The cash proceeds from short sales will be invested in short-term cash instruments <br />to produce a return on such proceeds just below the federal funds rate. The Fund <br />will invest, both long and short, in securities principally traded in the United <br />States markets. The Fund may invest in securities of companies operating for three <br />years or less ("unseasoned issuers"). Robeco will determine the size of each long <br />or short position by analyzing the tradeoff between the attractiveness of each <br />position and its impact on the risk of the overall portfolio. The Fund seeks to <br />construct a portfolio that has less volatility than the United States equity <br />market generally. Robeco examines various factors in determining the value <br />characteristics of such issuers including price-to-book value ratios and <br />price-to-earnings ratios. These value characteristics are examined in the context <br />of the issuer's operating and financial fundamentals such as return on equity, <br />earnings growth and cash flow. Robeco selects securities for the Fund based on a <br />continuous study of trends in industries and companies, earnings power and growth <br />and other investment criteria. <br /><br />Robeco will sell a stock when it no longer meets one or more investment<br />criteria, either through obtaining target value or due to an adverse change in<br />fundamentals or business momentum. Each holding has a target valuation<br />established at purchase, which Robeco constantly monitors and adjusts as<br />appropriate.<br /> <br />The Fund intends, under normal circumstances, to invest at least 80% of its net<br />assets (including borrowings for investment purposes) in equity securities.<br /> <br />Under normal circumstances, Robeco expects that the Fund's long positions will<br />not exceed approximately 125% of the Fund's net assets.<br /> <br />The Fund's long and short positions may involve (without limit) equity<br />securities of foreign issuers that are traded in the markets of the United<br />States. The Fund may also invest up to 20% of its total assets directly in<br />equity securities of foreign issuers.<br /> <br />To meet margin requirements, redemptions or pending investments, the Fund may<br />also temporarily hold a portion of its assets in full faith and credit obligations <br />of the United States government and in short-term notes, commercial paper or other <br />money market instruments.<br /> <br />The Fund may participate as a purchaser in initial public offerings of securities <br />("IPO"). An IPO is a company's first offering of stock to the public.<br /><br />The Fund may invest from time to time a significant portion of its assets in<br />smaller issuers which are more volatile and less liquid than investments in<br />issuers with a market capitalization greater than $1 billion.<br /> <br />The Fund may invest up to 15% of its net assets in illiquid securities,<br />including securities that are illiquid by virtue of the absence of a readily<br />available market or legal or contractual restrictions on resale.<br /> <br />In general, the Fund's investments are broadly diversified over a number of<br />industries and, as a matter of policy, the Fund is limited to investing a<br />maximum of 25% of its total assets in any one industry.<br /> <br />The Fund may invest up to 20% of its net assets in high yield debt obligations,<br />such as bonds and debentures, used by corporations and other business<br />organizations.<br /> <br />While Robeco intends to fully invest the Fund's assets at all times in accordance <br />with the above-mentioned policies, the Fund reserves the right to hold up to 100% <br />of its assets, as a temporary defensive measure, in cash and eligible U.S. <br />dollar-denominated money market instruments. Robeco will determine when market <br />conditions warrant temporary defensive measures.</tt> SUMMARY SECTION Example After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Investment Objective As with all such investments, past performance (before and after taxes) is not an indication of future results. The net asset value ("NAV") of the Fund will change with changes in the market value of its portfolio positions. Investors may lose money. Summary of Principal Risks Shareholder Fees (fees paid directly from your investment) 0.71 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. Total Returns for the Calendar Years Ended December 31 Performance Information The chart below illustrates the long-term performance of the Robeco Boston Partners Long/Short Equity Fund's Investor Class. <tt>Best and Worst Quarterly Performance (for the periods reflected in the chart<br />above):<br /><br />Best Quarter:&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;38.45% (quarter ended June 30, 2009)<br />Worst Quarter:&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;(19.44)% (quarter ended December 31 2008) <br />Year-to-date total return for the nine months ended September 30, 2012: 8.64%</tt> 1-888-261-4073 Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Average Annual Total Returns for the Periods Ended December 31, 2011 Portfolio Turnover <tt>&#x2022; Market Risk. The net asset value ("NAV") of the Fund will change with changes<br />in the market value of its portfolio positions. Investors may lose money.<br />Although the long portfolio of the Fund will invest in stocks Robeco believes to<br />be undervalued, there is no guarantee that the prices of these stocks will not<br />move even lower.<br /> <br />&#x2022; High Yield Debt Obligations Risk. The Fund may invest up to 20% of its net<br />assets in high yield debt obligations, such as bonds and debentures, issued by<br />corporations and other business organizations. An issuer of debt obligations may<br />default on its obligation to pay interest and repay principal. Also, changes in<br />the financial strength of an issuer or changes in the credit rating of a<br />security may affect its value. Such high yield debt obligations are referred to<br />as "junk bonds" and are not considered to be investment grade.<br /> <br />&#x2022; Foreign Securities Risk. International investing is subject to special risks,<br />including, but not limited to, currency exchange rate volatility, political,<br />social or economic instability, and differences in taxation, auditing and other<br />financial practices.<br /> <br />&#x2022; Management Risk. The Fund is subject to the risk of poor stock selection. In<br />other words, Robeco may not be successful in its strategy of taking long<br />positions in stocks the manager believes to be undervalued and short positions<br />in stocks the manager believes to be overvalued. Further, since Robeco will<br />manage both a long and a short portfolio, there is the risk that Robeco may make<br />more poor investment decisions than an adviser of a typical stock mutual fund<br />with only a long portfolio may make.<br /> <br />&#x2022; Short Sales Risk. Short sales of securities may result in gains if a<br />security's price declines, but may result in losses if a security's price rises.<br /> <br />&#x2022; Unseasoned Issuers Risk. Unseasoned issuers may not have an established<br />financial history and may have limited product lines, markets or financial<br />resources. Unseasoned issuers may depend on a few key personnel for management<br />and may be susceptible to losses and risks of bankruptcy. As a result, such<br />securities may be more volatile and difficult to sell.<br /> <br />&#x2022; Small-Cap Companies Risk. The small capitalization equity securities in <br />which the Fund may invest may be traded only in the over-the-counter market <br />or on a regional securities exchange, may be listed only in the quotation <br />service commonly known as the "pink sheets," and may not be traded every day <br />or in the volume typical of trading on a national securities exchange. These <br />securities may also be subject to wide fluctuations in market value. The <br />trading market for any given small capitalization equity security may be <br />sufficiently small as to make it difficult for the Fund to dispose of a <br />substantial block of such securities. The sale by the Fund of portfolio <br />securities to meet redemptions may require the Fund to sell its small <br />capitalization securities at a discount from market prices or during periods <br />when, in Robeco's judgment, such sale is not desirable. Moreover, the lack <br />of an efficient market for these securities may make them difficult to value.<br /> <br />&#x2022; Portfolio Turnover Risk. If the Fund frequently trades its portfolio<br />securities, the Fund will incur higher brokerage commissions and transaction<br />costs, which could lower the Fund's performance. In addition to lower<br />performance, high portfolio turnover could result in taxable capital gains. <br />The annual portfolio turnover rate for the Fund is not expected to exceed 400%;<br />however, it may be higher if Robeco believes it will improve the Fund's<br />performance.<br /> <br />&#x2022; Segregated Account Risk. A security held in a segregated account cannot be<br />sold while the position it is covering is outstanding, unless it is replaced<br />with a similar security. As a result, there is a possibility that segregation <br />of a large percentage of the Fund's assets could impede portfolio management <br />or the Fund's ability to meet redemption requests or other current obligations.<br /> <br />&#x2022; Illiquid Securities Risk. Investing in illiquid securities is subject to<br />certain risks, such as limitations on resale and uncertainty in determining<br />valuation. Limitations on resale may adversely affect the marketability of<br />portfolio securities and the Fund might be unable to dispose of restricted or<br />other illiquid securities promptly or at reasonable prices and might thereby<br />experience difficulty satisfying redemptions within seven days. The Fund might,<br />in order to dispose of restricted securities, have to register securities<br />resulting in additional expense and delay. Adverse market conditions could<br />impede such a public offering of such securities.<br /> <br />&#x2022; IPO Risk. IPO risk is the risk that the market value of IPO shares will<br />fluctuate considerably due to certain factors, such as the absence of a prior<br />public market, unseasoned trading, the small number of shares available for<br />trading and limited information about the issuer. The purchase of IPO shares <br />may involve high transaction costs. IPO shares are subject to market risk and<br />liquidity risk. When the Fund's asset base is small, a significant portion of<br />the Fund's performance could be attributable to investments in IPOs, because<br />such investments would have a magnified impact on the Fund. As the Fund's assets<br />grow, the effect of the Fund's investments in IPOs on the Fund's performance<br />probably will decline, which could reduce the Fund's performance. Because of the<br />price volatility of IPO shares, the Fund may choose to hold IPO shares for a<br />very short period of time. This may increase the turnover of the Fund's<br />portfolio and may lead to increased expenses to the Fund, such as commissions<br />and transaction costs. In addition, Robeco cannot guarantee continued access to<br />IPOs.</tt> Expenses and Fees Summary of Principal Investment Strategies www.robecoinvest.com <tt>The chart below illustrates the long-term performance of the Robeco Boston<br />Partners Long/Short Equity Fund's Investor Class. The information shows you how<br />the Fund's performance has varied year by year and provides some indication of<br />the risks of investing in the Fund. The chart assumes reinvestment of dividends<br />and distributions. As with all such investments, past performance (before and<br />after taxes) is not an indication of future results. Performance reflects fee<br />waivers in effect. If fee waivers were not in place, the Fund's performance<br />would be reduced. Updated performance information is available at<br />www.robecoinvest.com or 1-888-261-4073.</tt> <tt>This table describes the fees and expenses that you may pay if you buy and hold<br />Investor Class shares of the Fund.</tt> <div style="display:none">~ http://www.astonfunds.com/role/OperatingExpensesData_S000001108Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/PerformanceTableData_S000001108Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact * ~</div> <tt>The table below compares the average annual total returns for the Fund's<br />Investor Class both before and after taxes for the past calendar year, <br />past five calendar years and past ten calendar years to the average annual <br />total returns of a broad-based securities market index for the same periods. <br />Although the Fund compares its average total return to a broad-based <br />securities market index, the Fund seeks returns that are not correlated to <br />securities market returns. The Fund seeks to achieve a 12-15% return over a <br />full market cycle; however, there can be no guarantee that such returns will <br />be achieved.</tt> <div style="display:none">~ http://www.astonfunds.com/role/ShareholderFeesData_S000001108Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> S&P 500® Index (reflects no deduction for fees, expenses or taxes) 0.0211 -0.0025 0.0292 Returns After Taxes on Distributions and Sale of Fund Shares 0.0427 0.0878 0.0729 Returns After Taxes on Distributions 0.0250 0.0913 0.0758 BPLEX -0.0082 Worst Quarter: Best Quarter: 0.00 2012-09-30 Returns Before Taxes 0.0038 455 2009-06-30 1372 -0.1944 0.0796 0.2614 4648 -0.0200 2298 -0.0442 0.3845 0.0023 0.0563 0.0205 -0.2133 0.0225 2013-12-31 2008-12-31 0.8092 0.1263 0.1698 Year-to-date total return 0.0200 0.0144 0.0563 0.00 -0.0217 0.0025 0.0995 0.0454 0.1622 0.0864 0.00 <tt>The Fund pays transaction costs, such as commissions, when it buys and sells<br />securities (or "turns over" its portfolio). A higher portfolio turnover rate <br />may indicate higher transaction costs and may result in higher taxes when <br />Fund shares are held in a taxable account. These costs, which are not <br />reflected in Total Annual Fund Operating Expenses or in the Example, affect <br />the Fund's performance. During the fiscal year ended August 31, 2012, the <br />portfolio turnover rate for the Fund was 33%.</tt> <div style="display:none">~ http://www.astonfunds.com/role/ExpenseExample_S000001106Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/BarChartData_S000001106Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <tt>The Fund seeks to provide long-term growth of capital primarily through<br />investment in equity securities.</tt> <tt>This Example is intended to help you compare the cost of investing in the Fund<br />with the cost of investing in other mutual funds. The Example assumes that you<br />invest $10,000 in the Fund for the time periods indicated and that you sell all<br />of your shares at the end of the period. The Example also assumes that your<br />investment has a 5% return each year and that the operating expenses of the Fund<br />remain the same. Although your actual costs may be higher or lower, based on<br />these assumptions your costs would be:</tt> Average Annual Total Returns reflects no deduction for fees, expenses or taxes <tt>The Fund pursues its objective by investing, under normal circumstances, at<br />least 80% of its net assets (including borrowings for investment purposes) <br />in a diversified portfolio consisting primarily of equity securities, such <br />as common stocks of issuers across the capitalization spectrum and identified <br />by Robeco as having value characteristics.<br /> <br />Robeco examines various factors in determining the value characteristics of <br />such issuers including price to book value ratios and price to earnings ratios. <br />These value characteristics are examined in the context of the issuer's <br />operating and financial fundamentals, such as return on equity and earnings <br />growth and cash flow. Robeco selects securities for the Fund based on a <br />continuous study of trends in industries and companies, earnings power and growth <br />and other investment criteria.<br /> <br />Robeco will sell a stock when it no longer meets one or more investment criteria, <br />either through obtaining target value or due to an adverse change in fundamentals <br />or business momentum. Each holding has a target valuation established at purchase, <br />which Robeco constantly monitors and adjusts as appropriate.<br /> <br />The Fund may also invest up to 20% of its total assets in non U.S. dollar-denominated <br />securities.<br /> <br />The Fund may invest up to 15% of its net assets in illiquid securities, including <br />securities that are illiquid by virtue of the absence of a readily available market <br />or legal or contractual restrictions on resale.<br /> <br />The Fund may participate as a purchaser in initial public offerings of securities <br />("IPO"). An IPO is a company's first offering of stock to the public.<br /> <br />The Fund may invest up to 10% of its net assets in securities that can be converted <br />into common stock, such as certain debt securities and preferred stock.<br /> <br />The Fund may hedge overall portfolio exposure up to 40% of its net assets through <br />the purchase and sale of index and individual put and call options.<br /> <br />In general, the Fund's investments are broadly diversified over a number of<br />industries and, as a matter of policy, the Fund is limited to investing less<br />than 25% of its total assets in any one industry.<br /> <br />While Robeco intends to fully invest the Fund's assets at all times in accordance <br />with the above-mentioned policies, the Fund reserves the right to hold up to 100% <br />of its assets, as a temporary defensive measure, in cash and eligible U.S. <br />dollar-denominated money market instruments. Robeco will determine when market <br />conditions warrant temporary defensive measures.</tt> SUMMARY SECTION <tt>Current income is a secondary objective.</tt> Example After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Investment Objective As with all such investments, past performance (before and after taxes) is not an indication of future results. The net asset value ("NAV") of the Fund will change with changes in the market value of its portfolio positions. Investors may lose money. Summary of Principal Risks Shareholder Fees (fees paid directly from your investment) 0.33 After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. Total Returns for the Calendar Years Ended December 31 Performance reflects fee waivers in effect. If fee waivers were not in place, the Fund's performance would be reduced. Performance Information The information shows you how the Fund's performance has varied year by year and provides some indication of the risks of investing in the Fund. <tt>Best and Worst Quarterly Performance (for the periods reflected in <br />the chart above):<br /> <br />Best Quarter: 18.60% (quarter ended June 30, 2009)<br />Worst Quarter: (17.49)% (quarter ended September 30, 2011)<br />Year-to-date total return for the nine months ended September 30, 2012: 14.21%</tt> 1-888-261-4073 Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Average Annual Total Returns for the Periods Ended December 31, 2011 Portfolio Turnover <tt>&#x2022; Management Risk. The Fund is subject to the risk of poor stock selection. In<br />other words, the individual stocks in the Fund may not perform as well as<br />expected, and/or the Fund's portfolio management practices do not work to<br />achieve their desired result.<br /> <br />&#x2022; Market Risk. The net asset value ("NAV") of the Fund will change with changes<br />in the market value of its portfolio positions. Investors may lose money.<br />Although the Fund will invest in stocks Robeco believes to be undervalued, there<br />is no guarantee that the prices of these stocks will not move even lower.<br /> <br />&#x2022; Foreign Securities Risk. International investing is subject to special risks,<br />including, but not limited to, currency exchange rate volatility, political,<br />social or economic instability, and differences in taxation, auditing and other<br />financial practices.<br />&#xA0;&#xA0;<br />&#x2022; Small/Mid Cap Companies Risk. Investing in securities of companies with micro,<br />small or mid-sized capitalizations tends to be riskier than investing in<br />securities of companies with large capitalizations.<br /> <br />Securities of companies with micro, small and mid-sized capitalizations tend to<br />be more volatile than those of large cap companies and, on occasion, may fluctuate <br />in the opposite direction of large cap company securities or the broader stock <br />market averages.<br /> <br />The small capitalization equity securities in which the Fund invests may be<br />traded only in the over-the-counter market or on a regional securities exchange,<br />may be listed only in the quotation service commonly known as the "pink sheets,"<br />and may not be traded every day or in the volume typical of trading on a national <br />securities exchange. These securities may also be subject to wide fluctuations in <br />market value. The trading market for any given small capitalization equity security <br />may be sufficiently small as to make it difficult for the Fund to dispose of a <br />substantial block of such securities. The sale by the Fund of portfolio securities <br />to meet redemptions may require the Fund to sell its small capitalization securities <br />at a discount from market prices or during periods when, in Robeco's judgment, such <br />sale is not desirable. Moreover, the lack of an efficient market for these securities <br />may make them difficult to value.<br /> <br />&#x2022; Convertible Securities Risk. Securities that can be converted into common<br />stock, such as certain securities and preferred stock, are subject to the usual<br />risks associated with fixed income investments, such as interest rate risk and<br />credit risk. In addition, because they react to changes in the value of the<br />equity securities into which they will convert, convertible securities are also<br />subject to the risks associated with equity securities.<br /> <br />&#x2022; Portfolio Turnover Risk. If the Fund frequently trades its portfolio securities, <br />the Fund will incur higher brokerage commissions and transaction costs, which could <br />lower the Fund's performance. In addition to lower performance, high portfolio <br />turnover could result in taxable capital gains. The annual portfolio turnover rate <br />for the Fund is not expected to exceed 125%; however, it may be higher if Robeco <br />believes it will improve the Fund's performance.<br /> <br />&#x2022; Options Risk. An option is a type of derivative instrument that gives the<br />holder the right (but not the obligation) to buy (a "call") or sell (a "put") an<br />asset in the near future at an agreed upon price prior to the expiration date of<br />the option. The Fund may "cover" a call option by owning the security underlying<br />the option or through other means. The value of options can be highly volatile,<br />and their use can result in loss if Robeco is incorrect in its expectation of<br />price fluctuations.<br /> <br />&#x2022; Illiquid Securities Risk. Investing in illiquid securities is subject to<br />certain risks, such as limitations on resale and uncertainty in determining<br />valuation. Limitations on resale may adversely affect the marketability of<br />portfolio securities and the Fund might be unable to dispose of restricted or<br />other illiquid securities promptly or at reasonable prices and might thereby<br />experience difficulty satisfying redemptions within seven days. The Fund might,<br />in order to dispose of restricted securities, have to register securities<br />resulting in additional expense and delay. Adverse market conditions could<br />impede such a public offering of such securities.<br /> <br />&#x2022; IPO Risk. IPO risk is the risk that the market value of IPO shares will<br />fluctuate considerably due to certain factors, such as the absence of a prior<br />public market, unseasoned trading, the small number of shares available for<br />trading and limited information about the issuer. The purchase of IPO shares <br />may involve high transaction costs. IPO shares are subject to market risk and<br />liquidity risk. When the Fund's asset base is small, a significant portion of<br />the Fund's performance could be attributable to investments in IPOs, because<br />such investments would have a magnified impact on the Fund. As the Fund's assets<br />grow, the effect of the Fund's investments in IPOs on the Fund's performance<br />probably will decline, which could reduce the Fund's performance. Because of the<br />price volatility of IPO shares, the Fund may choose to hold IPO shares for a<br />very short period of time. This may increase the turnover of the Fund's portfolio <br />and may lead to increased expenses to the Fund, such as commissions and <br />transaction costs. In addition, Robeco cannot guarantee continued access to IPOs.</tt> Expenses and Fees Summary of Principal Investment Strategies www.robecoinvest.com <tt>The chart below illustrates the long-term performance of the Robeco Boston<br />Partners All-Cap Value Fund's Institutional Class. The information shows you <br />how the Fund's performance has varied year by year and provides some indication <br />of the risks of investing in the Fund. The chart assumes reinvestment of <br />dividends and distributions. As with all such investments, past performance <br />(before and after taxes) is not an indication of future results. Performance <br />reflects fee waivers in effect. If fee waivers were not in place, the Fund's <br />performance would be reduced. Updated performance information is available at<br />www.robecoinvest.com or 1-888-261-4073.</tt> <tt>This table describes the fees and expenses that you may pay if you buy and hold<br />Institutional Class shares of the Fund.</tt> <div style="display:none">~ http://www.astonfunds.com/role/OperatingExpensesData_S000001106Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/PerformanceTableData_S000001106Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact * ~</div> <tt>The table below compares the average annual total returns for the Fund's<br />Institutional Class both before and after taxes for the past calendar year, past<br />five calendar years and since inception to the average annual total returns of a<br />broad-based securities market index for the same periods.</tt> <div style="display:none">~ http://www.astonfunds.com/role/ShareholderFeesData_S000001106Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> Russell 3000® Value Index (reflects no deduction for fees, expenses or taxes) -0.0010 -0.0258 0.0473 2002-07-01 Return After Taxes on Distributions and Sale of Fund Shares 0.0011 0.0092 0.0690 2002-07-01 Return After Taxes on Distributions -0.0273 0.0053 0.0723 2002-07-01 BPAIX Worst Quarter: Best Quarter: 0.00 2012-09-30 Return Before Taxes 72 2009-06-30 295 -0.1749 0.2057 -0.0033 0.1342 1229 0.00 536 0.0147 0.1860 -0.0138 0.0023 -0.2726 0.0080 2013-12-31 2011-09-30 0.3097 0.0157 0.0988 Year-to-date total return 0.00 -0.0138 0.00 0.3713 0.00 0.0070 0.0103 0.1763 0.0827 2002-07-01 0.1421 0.00 <div style="display:none">~ http://www.astonfunds.com/role/ExpenseExample_S000001093Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/BarChartData_S000001093Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <tt>The Money Market Portfolio (the "Portfolio") of The RBB Fund, Inc. (the <br />"Company") seeks to generate current income, to provide you with liquidity <br />and to protect your investment.</tt> The seven-day yield for the period ended December 31, 2011 <tt>This Example is intended to help you compare the cost of investing in the<br />Portfolio with the cost of investing in other mutual funds. The Example <br />assumes that you invest $10,000 in the Portfolio for the time periods <br />indicated and then redeem all of your shares at the end of those periods. <br />The Example also assumes that your investment has a 5% return each year <br />and that the Portfolio's operating expenses remain the same. Although <br />your actual costs may be higher or lower, based on these assumptions your <br />costs would be:</tt> Average Annual Total Returns for the Years Ended December 31, 2011 <tt>The Portfolio invests in a diversified investment portfolio of short term, high<br />quality, U.S. dollar-denominated instruments, including government, bank,<br />commercial and other obligations.<br /><br />Specifically, the Portfolio may invest in:<br /> <br />o U.S. dollar-denominated obligations issued or supported by the credit of U.S.<br />or foreign banks or savings institutions with total assets of more than $1<br />billion (including obligations of foreign branches of such banks).<br /> <br />o High quality commercial paper and other obligations issued or guaranteed (or<br />otherwise supported) by U.S. and foreign corporations and other issuers rated<br />(at the time of purchase) A-2 or higher by Standard and Poor's&#xAE;, Prime-2 or<br />higher by Moody's Investor's Service, Inc. or F-2 or higher by Fitch, Inc., as<br />well as high quality corporate bonds rated AA (or Aa) or higher at the time of<br />purchase by those rating agencies. These ratings must be provided by at least<br />two rating agencies or by the only rating agency providing a rating.<br /> <br />o Unrated notes, paper and other instruments that are determined by the Adviser<br />to be of comparable quality to the instruments described above.<br /> <br />o Asset-backed securities (including interests in pools of assets such as<br />mortgages, installment purchase obligations and credit card receivables).<br /> <br />o Securities issued or guaranteed by the U.S. government or by its agencies or<br />authorities.<br /> <br />o Dollar-denominated securities issued or guaranteed by foreign governments or<br />their political subdivisions, agencies or authorities.<br /> <br />o Securities issued or guaranteed by state or local governmental bodies.<br /> <br />o Repurchase agreements relating to the above instruments.<br /> <br />The Portfolio seeks to maintain a net asset value of $1.00 per share. At least<br />25% of the Portfolio's total assets will be invested in banking obligations.</tt> SUMMARY SECTION Example Investment Goal As with all such investments, past performance is not an indication of future results. Principal Risks Total Returns for the Calendar Years Ended December 31 Performance Information <tt>Current Yield: The seven-day yield for the period ended December 31, 2011 for<br />the Portfolio was 0.04%. You may call (800) 430-9618 to obtain the current<br />seven-day yield of the Portfolio.</tt> The chart and table below illustrate the variability of the Portfolio's long-term performance for Sansom Street Shares. <tt>Best and Worst Quarterly Performance (for the periods reflected in the chart<br />above):<br /> <br />Best Quarter:&#xA0;&#xA0;1.28% (quarter ended September 30, 2007)<br />Worst Quarter: 0.01% (quarter ended June 30, 2011)<br /> <br />Year-to-date total return for the nine months ended September 30, 2012: 0.03%</tt> Year-to-date total return Annual Portfolio Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Although the Portfolio seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Portfolio. When you invest in the Portfolio you are not making a bank deposit. Your investment is not insured or guaranteed by the Federal Deposit Insurance Corporation or by any bank or governmental agency. <tt>o The value of money market investments tends to fall when current interest<br />rates rise. Money market investments are generally less sensitive to interest<br />rate changes than longer-term securities.<br /> <br />o The Portfolio's investment securities may not earn as high a level of income<br />as longer-term or lower quality securities, which generally have greater risk<br />and more fluctuation in value.<br /> <br />o The Portfolio's concentration of its investments in the banking industry could<br />increase risks. The profitability of banks depends largely on the availability<br />and cost of funds, which can change depending upon economic conditions. Banks<br />are also exposed to losses if borrowers get into financial trouble and cannot<br />repay their loans.<br /> <br />o The obligations of foreign banks and other foreign issuers may involve certain<br />risks in addition to those of domestic issuers, including higher transaction<br />costs, less complete financial information, political and economic instability,<br />less stringent regulatory requirements and less market liquidity.<br /> <br />o Unrated notes, paper and other instruments may be subject to the risk that an<br />issuer may default on its obligation to pay interest and repay principal.<br /> <br />o The obligations issued or guaranteed by state or local governmental bodies may<br />be issued by entities in the same state and may have interest which is paid from<br />revenues of similar projects. As a result, changes in economic, business or<br />political conditions relating to a particular state or types of projects may<br />impact the Portfolio.<br /> <br />o Treasury obligations differ only in their interest rates, maturities and time<br />of issuance. These differences could result in fluctuations in the value of such<br />securities depending upon the market. Obligations of U.S. government agencies <br />and authorities are supported by varying degrees of credit. The U.S. government <br />gives no assurances that it will provide financial support to its agencies and <br />authorities if it is not obligated by law to do so. Default in these issuers <br />could negatively impact the Portfolio.<br /> <br />o In September 2008, the U.S. Treasury Department and the Federal Housing<br />Finance Agency ("FHFA") announced that Fannie Mae and Freddie Mac would be<br />placed in conservatorship under the FHFA. On June 16, 2010, FHFA ordered <br />Fannie Mae's and Freddie Mac's stock de-listed from the New York Stock <br />Exchange after the price of common stock in Fannie Mae fell below the New <br />York Stock Exchange's minimum average closing price of $1 for more than 30 <br />days. The long-term effect that this conservatorship will have on Fannie <br />Mae and Freddie Mac's debt and equity and on securities guaranteed by Fannie <br />Mae and Freddie Mac remains unclear.<br /> <br />o The Portfolio's investment in asset-backed securities may be negatively<br />impacted by interest rate fluctuations or when an issuer pays principal on an<br />obligation held by the Portfolio earlier or later than expected. These events<br />may affect their value and the return on your investment.<br /> <br />o The Portfolio could lose money if a seller under a repurchase agreement<br />defaults or declares bankruptcy.<br /> <br />o The Portfolio may purchase variable and floating rate instruments. Like all<br />debt instruments, their value is dependent on the credit paying ability of the<br />issuer. If the issuer were unable to make interest payments or default, the<br />value of the securities would decline. The absence of an active market for these<br />securities could make it difficult to dispose of them if the issuer defaults.<br /> <br />Although the Portfolio seeks to preserve the value of your investment at $1.00<br />per share, it is possible to lose money by investing in the Portfolio. When you<br />invest in the Portfolio you are not making a bank deposit. Your investment is<br />not insured or guaranteed by the Federal Deposit Insurance Corporation or by any<br />bank or governmental agency.</tt> Expenses and Fees Summary of Principal Investment Strategies <tt>The chart and table below illustrate the variability of the Portfolio's<br />long-term performance for Sansom Street Shares. The information shows <br />you how the Portfolio's performance has varied year by year and provides <br />some indication of the risks of investing in the Portfolio. The chart and <br />the table both assume reinvestment of dividends and distributions. As with <br />all such investments, past performance is not an indication of future <br />results. Performance reflects fee waivers in effect. If fee waivers were <br />not in place, the Portfolio's performance would be reduced. Effective May <br />28, 2010, Rule 2a-7 under the Investment Company Act of 1940 (the "1940 <br />Act") was amended to impose new liquidity, credit quality and maturity <br />requirements on all money market funds. Fund performance shown prior to <br />May 28, 2010 is based on 1940 Act rules then in effect and is not an<br />indication of future returns.</tt> <tt>This table describes the fees and expenses that you may pay if you buy and hold<br />Sansom Street Shares of the Portfolio.</tt> <div style="display:none">~ http://www.astonfunds.com/role/OperatingExpensesData_S000001093Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/PerformanceTableData_S000001093Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <tt>The table below shows the Portfolio's average annual total returns for the past<br />calendar year, the past five calendar years and the past ten calendar years.<br />Past performance (before and after taxes) is not necessarily an indicator of how<br />the Fund will perform in the future.</tt> Your investment is not insured or guaranteed by the Federal Deposit Insurance Corporation or by any bank or governmental agency. (800) 430-9618 SANXX 0.0172 Worst Quarter: Best Quarter: 2012-09-30 26 2007-09-30 135 0.0001 0.0125 -0.0025 0.0003 604 255 0.0510 0.0128 0.0005 0.0010 0.0281 0.0040 2013-12-31 2011-06-30 0.0049 0.0169 0.0314 0.0004 0.0005 0.0105 0.00 0.0204 0.0025 0.0050 0.0485 0.0003 <div style="display:none">~ http://www.astonfunds.com/role/ExpenseExample_S000001093Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/BarChartData_S000001093Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <tt>The Money Market Portfolio (the "Portfolio") of The RBB Fund, Inc. (the "Company") <br />seeks to generate current income, to provide you with liquidity and to protect <br />your investment.</tt> The seven-day yield for the period ended December 31, 2011 <tt>This Example is intended to help you compare the cost of investing in <br />the Portfolio with the cost of investing in other mutual funds. The <br />Example assumes that you invest $10,000 in the Portfolio for the time <br />periods indicated and then redeem all of your shares at the end of <br />those periods. The Example also assumes that your investment has a 5% <br />return each year and that the Portfolio's operating expenses remain <br />the same. Although your actual costs may be higher or lower, based on <br />these assumptions your costs would be:</tt> Average Annual Total Returns for the Years Ended December 31, 2011 <tt>The Portfolio invests in a diversified investment portfolio of short term, high<br />quality, U.S. dollar-denominated instruments, including government, bank,<br />commercial and other obligations.<br /> <br />Specifically, the Portfolio may invest in:<br /> <br />o U.S. dollar-denominated obligations issued or supported by the credit of U.S.<br />or foreign banks or savings institutions with total assets of more than $1<br />billion (including obligations of foreign branches of such banks).<br /> <br />o High quality commercial paper and other obligations issued or guaranteed (or<br />otherwise supported) by U.S. and foreign corporations and other issuers rated<br />(at the time of purchase) A-2 or higher by Standard and Poor's&#xAE;, Prime-2 or<br />higher by Moody's Investor's Service, Inc. or F-2 or higher by Fitch, Inc., as<br />well as high quality corporate bonds rated AA (or Aa) or higher at the time of<br />purchase by those rating agencies. These ratings must be provided by at least<br />two rating agencies, or by the only rating agency providing a rating.<br /> <br />o Unrated notes, paper and other instruments that are determined by the Adviser<br />to be of comparable quality to the instruments described above.<br /> <br />o Asset-backed securities (including interests in pools of assets such as<br />mortgages, installment purchase obligations and credit card receivables).<br /> <br />o Securities issued or guaranteed by the U.S. government or by its agencies or<br />authorities.<br /><br />o Dollar-denominated securities issued or guaranteed by foreign governments or<br />their political subdivisions, agencies or authorities.<br /> <br />o Securities issued or guaranteed by state or local governmental bodies.<br /> <br />o Repurchase agreements relating to the above instruments.<br /> <br />The Portfolio seeks to maintain a net asset value of $1.00 per share. At least<br />25% of the Portfolio's total assets will be invested in banking obligations.</tt> SUMMARY SECTION Example: Investment Goal As with all such investments, past performance is not an indication of future results. Principal Risks Total Returns for the Calendar Years Ended December 31 Performance Information <tt>Current Yield: The seven-day yield for the period ended December 31, 2011 for<br />the Portfolio was 0.02%. You may call (800) 888-9723 to obtain the current<br />seven-day yield of the Portfolio.</tt> The chart and table below illustrate the variability of the Portfolio's long-term performance for Bedford Shares. <tt>Best and Worst Quarterly Performance (for the periods reflected in the chart<br />above):<br /> <br />Best Quarter:&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;1.26%&#xA0;&#xA0;&#xA0;(quarter ended September 30, 2006)&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;<br />Worst Quarter:&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;0.00%&#xA0;&#xA0;&#xA0;(quarter ended March 31, 2010)&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;<br />&#xA0;&#xA0;<br />Year-to-date total return for the nine months ended September 30, 2012: 0.02%</tt> Year-to-date total return Annual Portfolio Operating Expenses (Expenses that you pay each year as a percentage of your investment) Although the Portfolio seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Portfolio. When you invest in the Portfolio you are not making a bank deposit. Your investment is not insured or guaranteed by the Federal Deposit Insurance Corporation or by any bank or governmental agency. <tt>o The value of money market investments tends to fall when current interest<br />rates rise. Money market investments are generally less sensitive to interest<br />rate changes than longer-term securities.<br /> <br />o The Portfolio's investment securities may not earn as high a level of income<br />as longer-term or lower quality securities, which generally have greater risk<br />and more fluctuation in value.<br /> <br />o The Portfolio's concentration of its investments in the banking industry could<br />increase risks. The profitability of banks depends largely on the availability<br />and cost of funds, which can change depending upon economic conditions. Banks<br />are also exposed to losses if borrowers get into financial trouble and cannot<br />repay their loans.<br /> <br />o The obligations of foreign banks and other foreign issuers may involve certain<br />risks in addition to those of domestic issuers, including higher transaction<br />costs, less complete financial information, political and economic instability,<br />less stringent regulatory requirements and less market liquidity.<br /> <br />o Unrated notes, paper and other instruments may be subject to the risk that an<br />issuer may default on its obligation to pay interest and repay principal.<br /> <br />o The obligations issued or guaranteed by state or local governmental bodies may<br />be issued by entities in the same state and may have interest which is paid from<br />revenues of similar projects. As a result, changes in economic, business or<br />political conditions relating to a particular state or types of projects may<br />impact the Portfolio.<br /> <br />o Treasury obligations differ only in their interest rates, maturities and time<br />of issuance. These differences could result in fluctuations in the value of such<br />securities depending upon the market. Obligations of U.S. government agencies<br />and authorities are supported by varying degrees of credit. The U.S. government<br />gives no assurances that it will provide financial support to its agencies and<br />authorities if it is not obligated by law to do so. Default in these issuers<br />could negatively impact the Portfolio.<br /> <br />o In September 2008, the U.S. Treasury Department and the Federal Housing Finance <br />Agency ("FHFA") announced that Fannie Mae and Freddie Mac would be placed in <br />conservatorship under the FHFA. On June 16, 2010, FHFA ordered Fannie Mae's and <br />Freddie Mac's stock de-listed from the New York Stock Exchange after the price <br />of common stock in Fannie Mae fell below the New York Stock Exchange's minimum <br />average closing price of $1 for more than 30 days. The long-term effect that this <br />conservatorship will have on Fannie Mae and Freddie Mac's debt and equity and on <br />securities guaranteed by Fannie Mae and Freddie Mac is remains unclear.<br /> <br />o The Portfolio's investment in asset-backed securities may be negatively<br />impacted by interest rate fluctuations or when an issuer pays principal on an<br />obligation held by the Portfolio earlier or later than expected. These events<br />may affect their value and the return on your investment.<br /> <br />o The Portfolio could lose money if a seller under a repurchase agreement<br />defaults or declares bankruptcy.<br /> <br />o The Portfolio may purchase variable and floating rate instruments. Like all<br />debt instruments, their value is dependent on the credit paying ability of the<br />issuer. If the issuer were unable to make interest payments or default, the<br />value of the securities would decline. The absence of an active market for these<br />securities could make it difficult to dispose of them if the issuer defaults.<br /> <br />Although the Portfolio seeks to preserve the value of your investment at $1.00<br />per share, it is possible to lose money by investing in the Portfolio. When you<br />invest in the Portfolio you are not making a bank deposit. Your investment is<br />not insured or guaranteed by the Federal Deposit Insurance Corporation or by any<br />bank or governmental agency.</tt> Expenses and Fees Summary of Principal Investment Strategies <tt>The chart and table below illustrate the variability of the Portfolio's<br />long-term performance for Bedford Shares. The information shows you how <br />the Portfolio's performance has varied year by year and provides some <br />indication of the risks of investing in the Portfolio. The chart and the <br />table both assume reinvestment of dividends and distributions. As with <br />all such investments, past performance is not an indication of future <br />results. Performance reflects fee waivers in effect. If fee waivers were <br />not in place, the Portfolio's performance would be reduced. Effective <br />May 28, 2010, Rule 2a-7 under the Investment Company Act of 1940 (the <br />"1940 Act") was amended to impose new liquidity, credit quality and <br />maturity requirements on all money market funds. Fund performance shown <br />prior to May 28, 2010 is based on 1940 Act rules then in effect and is <br />not an indication of future returns.</tt> <tt>This table describes the fees and expenses that you may pay if you buy and hold<br />Bedford Shares of the Portfolio.</tt> <div style="display:none">~ http://www.astonfunds.com/role/OperatingExpensesData_S000001093Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <div style="display:none">~ http://www.astonfunds.com/role/PerformanceTableData_S000001093Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> <tt>The table below shows the Portfolio's average annual total returns for the past<br />calendar year, the past five calendar years and the past ten calendar years.<br />Past performance (before and after taxes) is not necessarily an indicator of how<br />the Fund will perform in the future.</tt> Your investment is not insured or guaranteed by the Federal Deposit Insurance Corporation or by any bank or governmental agency. (800) 888-9723 BDMXX 0.0120 Worst Quarter: Best Quarter: 2012-09-30 92 2006-09-30 341 0.0000 0.0049 -0.0025 0.0004 1375 609 0.0452 0.0126 0.0002 0.0010 0.0219 0.0040 2013-12-31 2010-03-31 0.0019 0.0138 0.0238 0.0002 0.0002 0.0029 0.0065 0.0156 0.0090 0.0115 0.0442 0.0002 0000831114 ck0000831114:SummaryS000001093-1Memberck0000831114:S000001093Memberck0000831114:C000002980Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001093-1Memberck0000831114:S000001093Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001093-2Memberck0000831114:S000001093Memberck0000831114:C000002981Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001093-2Memberck0000831114:S000001093Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001106Memberck0000831114:S000001106Memberck0000831114:C000002997Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001106Memberck0000831114:S000001106Memberrr:AfterTaxesOnDistributionsMemberck0000831114:C000002997Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001106Memberck0000831114:S000001106Memberrr:AfterTaxesOnDistributionsAndSalesMemberck0000831114:C000002997Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001106Memberck0000831114:S000001106Memberck0000831114:RRINDEX00001Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001106Memberck0000831114:S000001106Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001108Memberck0000831114:S000001108Memberck0000831114:C000003002Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001108Memberck0000831114:S000001108Memberrr:AfterTaxesOnDistributionsMemberck0000831114:C000003002Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001108Memberck0000831114:S000001108Memberrr:AfterTaxesOnDistributionsAndSalesMemberck0000831114:C000003002Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001108Memberck0000831114:S000001108Memberck0000831114:RRINDEX00002Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000001108Memberck0000831114:S000001108Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000035438Memberck0000831114:S000035438Memberck0000831114:C000108833Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000035438Memberck0000831114:S000035438Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000035439Memberck0000831114:S000035439Memberck0000831114:C000108835Member 2012-12-31 2012-12-31 0000831114 ck0000831114:SummaryS000035439Memberck0000831114:S000035439Member 2012-12-31 2012-12-31 0000831114 2012-12-31 2012-12-31 pure iso4217:USD Management fees include investment advisory and administration fees. The Adviser has contractually agreed to waive and/or reimburse fees and/or expenses in order to limit the Portfolio's Total Annual Portfolio Operating Expenses After Fee Waivers and/or Expense Reimbursements (excluding Dividend Expenses, Interest Expenses, Acquired Fund Fees and Expenses, Distribution and Service (12b-1) Fees and certain other Portfolio expenses) to 0.25%. Because Distribution and Service (12b-1) fees and certain other Portfolio expenses are excluded from the contractual limitation, net Total Annual Portfolio Operating Expenses are expected to exceed the contractual limitation. This contractual limitation is in effect through December 31, 2013 and may not be terminated without the approval of the Board of Directors of The RBB Fund, Inc. The Adviser may terminate this arrangement at any time after December 31, 2013. Management fees include investment advisory and administration fees. The Adviser has contractually agreed to waive and/or reimburse fees and/or expenses in order to limit the Portfolio's Total Annual Portfolio Operating Expenses After Fee Waivers and/or Expense Reimbursements (excluding Dividend Expenses, Interest Expenses, Acquired Fund Fees and Expenses, Distribution and Service (12b-1) Fees and certain other Portfolio expenses) to 0.25%. In determining the Adviser's obligation to waive advisory fees and/or reimburse expenses, the expenses excluded from the contractual limitation are not taken into account and could cause net Total Annual Portfolio Operating Expenses to exceed 0.25%. This contractual limitation is in effect through December 31, 2013 and may not be terminated without the approval of the Board of Directors of The RBB Fund, Inc. The Adviser may terminate this arrangement at any time after December 31, 2013. The Fund's investment adviser, Robeco Investment Management, Inc. ("Robeco"), has contractually agreed to waive all or a portion of its advisory fee and/or reimburse expenses in an aggregate amount equal to the amount by which the Total Annual Fund Operating Expenses (excluding certain items discussed below) for the Fund's Institutional Class shares exceeds 0.70% of the average daily net assets attributable to the Fund's Institutional Class shares. In determining Robeco's obligation to waive advisory fees and/or reimburse expenses, the following expenses are not taken into account and could cause net Total Annual Fund Operating Expenses to exceed 0.70%: acquired fund fees and expenses, short sale dividend expenses, brokerage commissions, extraordinary items, interest or taxes. This contractual limitation is in effect until December 31, 2013 and may not be terminated without the approval of the Board of Directors of The RBB Fund, Inc. Robeco may not recoup any of its waived investment advisory fees. There are additional costs associated with the use of short sales. Short-sale dividends generally reduce the market value of the securities by the amount of the dividend declared; thus increasing the Fund's unrealized gain or reducing the Fund's unrealized loss on the securities sold short. The Fund's investment adviser, Robeco Investment Management, Inc. ("Robeco"), has contractually agreed to waive all or a portion of its advisory fee and/or reimburse expenses in an aggregate amount equal to the amount by which the Total Annual Fund Operating Expenses (other than acquired fund fees and expenses, short sale dividend expenses, brokerage commissions, extraordinary items, interest or taxes) for the Fund's Investor Class shares exceeds 2.75% of the average daily net assets attributable to the Fund's Investor Class shares. Because dividend expenses on short sales, acquired fund fees and expenses, brokerage commissions, extraordinary items, interest and taxes are excluded from the expense limitation, Total Annual Fund Operating Expenses (after fee waivers and expense reimbursements) are expected to exceed 2.75%. This contractual limitation is in effect until December 31, 2013 and may not be terminated without the approval of the Board of Directors of The RBB Fund, Inc. Robeco may not recoup any of its waived investment advisory fees. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. The Fund's investment adviser, Robeco Investment Management, Inc. ("Robeco"), has contractually agreed to waive all or a portion of its advisory fee and/or reimburse expenses in an aggregate amount equal to the amount by which the Total annual Fund operating expenses (excluding certain items discussed below) for the Fund's Investor Class shares exceeds 1.55% of the average daily net assets attributable to the Fund's Investor Class shares. In determining Robeco's obligation to waive advisory fees and/or reimburse expenses, the following expenses are not taken into account and could cause net Total Annual Fund Operating Expenses to exceed 1.55%: acquired fund fees and expenses, short sale dividend expenses, brokerage commissions, extraordinary items, interest or taxes. This contractual limitation is in effect until December 31, 2013 and may not be terminated without the approval of the Board of Directors of The RBB Fund, Inc. If at any time during the first three years the Fund's Advisory Agreement with Robeco is in effect, the Fund's Total annual Fund operating expenses for that year are less than 1.55%, Robeco is entitled to reimbursement by the Fund of the advisory fees waived and other payments remitted by Robeco to the Fund during such three-year period. 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