The Largest Index ETFs On The Market: SPDR S&P 500 ETF (SPY), PowerShares QQQ (ETF) (QQQ) & More by InsiderMonkey.comAugust 22, 2013April 19, 202001145 No. 8 iShares Russell 2000 Index (ETF) (NYSEARCA:IWM) IWM data by YCharts Assets Under Management: $23.9 billion Index the ETF Tracks: Russell 2000 Index YTD Return: 20% Daily average trading volume: $37.6 million 1 2 3 4 5 6 7 8 9 10