Small caps hit hardest as stocks tumble

|By:, SA News Editor

"Investors should prepare for a bout of significant Russell 2000 underperformance," presciently wrote Michael O'Rourke of Jones Trading last night, noting how unusual it was to see the DJIA off 2.3% YTD, but the Russell up 1%. Look for that performance gap to close, he said.

Closing it is today, with the small-cap index off 2.5%, about 1% worse than the Dow, S&P 500, and Nasdaq. The iShares Russell 2000 Index ETF (IWM-2.7%.

Small-cap ETFs: IJS, IWM, TZA, TNA, UWM, VB, IJR, SLY, EES, RWJ, VBR, VBK, URTY, TWM, SCHA, IWN, IWO, IJT, RWM, SRTY, DWAS, SAA, JKL, VTWO, SLYG, RZV, SLYV, SDD, JKJ, SBB, RSCO, VIOO, RZG, VTWG, FYX, UKK, TILT, VIOG, XSLV, VIOV, FYT, FNDA, JKK, EWRS, SKK, UVT, PXSV, TWOK, VTWV, SMLV, FYC, SJH, IESM, PXSC, VLU, PXSG