The Largest Index ETFs On The Market: SPDR S&P 500 ETF (SPY), PowerShares QQQ (ETF) (QQQ) & More

No. 6 iShares MSCI Emerging Markets Indx (ETF) (NYSEARCA:EEM)

EEM data by YCharts

Assets Under Management: $36.5 billion
Index the ETF Tracks: MSCI Emerging Markets Index
YTD Return: -12.5%
Daily average trading volume: $72.4 million