iShares Russell Small/Mid-Cap Idx Inv A

The fund seeks to track the investment results of the Russell 2500™ Index, which measures the performance of the small to mid-cap segment of the U.S. equity universe, commonly referred to as "smid" cap. The underlying index is a subset of the Russell 3000® Index. The fund generally invests at least 90% of its assets, plus the amount of any borrowing for investment purposes, in securities of the underlying index.