· | The Funds also have somewhat similar risk profiles, although there are differences of which you should be aware. Each Fund's principal risks include credit risk, derivatives risk, foreign regulatory risk, foreign securities risk, high-yield bonds, lower-rated bonds, and unrated securities risk, interest rate risk, leverage risk, liquidity risk, and market risk. The UBS Fund, however, also is subject to commodities regulatory and tax risk, investment in other investment companies risk, managed portfolio risk, and U.S. Government securities risk, while the BlackRock Fund generally is not. In addition, the principal risks of investing in the BlackRock Fund also include air transportation industry risk, borrowing risk, collateralized debt obligations risk, convertible securities risk, corporate loan risk, distressed debt risk, emerging markets risk, extension risk, loans risk, mezzanine securities risk, mid-capitalization investing risk, mortgage-related and other asset-backed securities risk, portfolio turnover risk, preferred stock risk, prepayment risk, repurchase agreements and purchase and sale contracts risk, reverse repurchase agreements risk, second lien loans risk, senior loans risk, short sales risk, small-capitalization investing risk, sovereign debt risk, structured products risk, and tax risk, which are not principal risks of investing in the UBS Fund and may result in an increased risk profile with respect to these investments. At times, the BlackRock Fund may experience higher expenses due to the effect of short sales and active trading. Such higher expenses may negatively impact the Fund's performance. For a detailed comparison of each Fund's risks, see "Comparison of Principal Risk Factors" below. |