American Beacon Stephens Mid-Cap Growth Fund Investor Class 

Under normal circumstances, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in equity securities of medium capitalization companies. The fund's manager considers a company to be a medium capitalization company if it has a market capitalization (stock market worth), at the time of investment, between $1 billion and the market capitalization of the largest company in the Russell Midcap® Index.