The S&P MidCap 400 Index measures the performance of Mid Cap securities and is selected by a Committee process. Currently, 11 ETFs track the S&P MidCap 400 Index with more than $66.4 B in ETP assets with an average expense ratio of 0.71%. The largest ETF is iShares Core S&P Mid-Cap ETF (IJH) by iShares with $45.27 B in assets.
In the last 12 months, the best performing S&P MidCap 400 Index ETF was the Direxion Daily Mid Cap Bull 3x Shares (MIDU) at 29.51%. The most-recent ETF launched by S&P MidCap 400 Index was the Portfolio+ S&P Mid Cap ETF (PPMC) in February 2018.