iShares S&P Mid-Cap 400 Growth ETF(AMEX:IJK)

IJK holds S&P MidCap 400 (commonly known as S&P 400) companies with high sales growth, increasing valuations and momentum. While the fund targets midcap growth stocks in the US, its definition of midcaps and growth is slightly different than usual. It starts selecting constituents further down the market-cap spectrum, resulting to a tilt toward smaller companies. IJK isnt a pure growth fund either. Its methodology allows for securities that would normally be found in core funds or even in value funds. Still, IJKs approach to the space is entirely valid and may work best in a portfolio with other S&P-defined size buckets. Additionally, instead of replicating the index, the fund uses representative sampling indexing. The index is weighted by float-adjusted market cap and rebalanced quarterly.