The Russell 2000 Index measures the performance of Small Cap securities and is selected by a Market Cap process. Currently, 11 ETFs track the Russell 2000 Index with more than $46.01 B in ETP assets with an average expense ratio of 0.83%. The largest ETF is iShares Russell 2000 ETF (IWM) by iShares with $42.73 B in assets.
In the last 12 months, the best performing Russell 2000 Index ETF was the ProShares UltraPro Russell2000 (URTY) at 56.01%. The most-recent ETF launched by Russell 2000 Index was the Direxion Daily Small Cap Bull 2X Shares ETF (SMLL) in July 2014.