ProShares High Yield-Interest Rate Hedged 

Typically, the fund commits a minimum of 80% of its overall holdings to high-yield debt securities that are components of its benchmark index. This index is structured with two main components: long exposures to U.S. dollar-denominated high-yield corporate bonds, and short positions in U.S. Treasury notes or bonds. The aggregate duration of these short Treasury holdings is designed to be approximately equivalent to the duration of the high-yield bonds.