You can make more money on small-cap stocks by playing this overlooked index By: MarketWatch June 04, 2018 at 12:26 PM EDT The Russell 2000 Index is the most inclusive, but it has not been a stellar performer over the long haul. Read More >> Related Stocks: S&P Smallcap 600 Index Vanguard S&P Smallcap 600 SPDR S&P Smallcap Ishares Core ETF