With the growth-oriented Nasdaq Composite outperforming the S&P 500 in 13 of the past 15 outings, the institutional-investor mindset gradually moves to risk-on. Most of this outperformance comes from larger issues, like the Powershares QQQ Trust QQQ, +0.05% besting smaller shares, like the iShares Russell 2000 ETF IWM, -0.02%
http://www.marketwatch.com/story/three-growth-stock-leaders-to-buy-2015-09-15?siteid=yhoof2