Balanced Fund , Large Cap Value Fund, Large Cap Growth Fund, Mid-Cap Value Fund, Small Cap Value Fund, Small Cap Value Opportunity Fund, International Equity Fund, Emerging Markets Fund, S&P 500 Index Fund, Small Cap Index Fund. International Equity Index Fund, High Yield Bond Fund, Intermediate Bond, Short-Term Bond, Treasury Inflation Protected Securities Fund, Money Market Fund.

Institutional Class shares are offered to investors who make an initial investment of at least $2 million.

PlanAhead Class - prospectus

Balanced Fund, Large Cap Value Fund, Small Cap Value Fund, Small Cap Value Opportunity Fund, International Equity Fund, Emerging Markets Fund, S&P 500 Index Fund,Enhanced Income Fund, High Yield Bond Fund, Short-Term Bond Fund, Money Market Fund, U.S. Government Money Market Fund.

PlanAhead Class shares are offered to all investors, including investors using intermediary organizations such as discount brokers or plan sponsors and retirement accounts.

Cash Management Class - prospectus

Money Market and U.S. Government Money Market Funds.

Shares are offered to institutional investors, including: agents or fiduciaries acting on behalf of their clients, endowment funds and charitable foundations, employee welfare plans, qualified pension and profit sharing plans, corporations, and other investors who meet the initial investment requirements. An inital investment of at least $10 million is required for the Money Market Fund. The U.S. Government Money Market Fund has an initial investment requirement of $2 million.

Balanced Fund, Large Cap Value Fund, Mid-Cap Value Fund, Small Cap Value Fund, International Equity Fund.

Service Class shares are offered to investors who invest through certain intermediary organizations, such as broker-dealers or third party administrators.

Balanced Fund, Large Cap Value Fund, Large Cap Growth Fund, Small Cap Value Fund, International Equity Fund, Emerging Markets Fund.

AMR Class shares are offered only to investors in the tax-exempt retirement and benefit plans of AMR Corporation and its affiliates

BBH ComSet Class shares are offered exclusively through the BBH ComSet Plus^SM money fund platform and through selected financial clearing house platforms to futures commission merchants, financial exchanges, financial clearing houses, broker dealers, and companies engaged in the business of investing in, trading, or market making financial and non-financial derivative contracts, securities and other financial contracts.

Money Market Fund, U.S. Government Money Market Fund.

The Select Funds are offered to corporate cash accounts, sweep accounts and other institutional investors who meet the initial investment requirements. An initial investment of at least $25 million is required for the Money Market Select Fund. The U.S. Government Money Market Select Fund has an initial investment requirement of $10 million.

Money Market Fund.

The American Beacon Mileage Fund is designed for American Airlines AAdvantage^® members who wish to accumulate AAdvantage^© miles while investing.