"Nothing fuels investor appetite like solid results," said Cinthia Murphy, analyst at TMX Vetta Fi. "Growth has outpaced value in recent years." And it's not just a hot streak this year. Going back five years, S&P 500 growth stocks are up 112% versus just 98% for S&P 500 value, Murphy says. ETFs that focus on the biggest of the big stocks, narrow in on the strongest growers or double-down on momentum plays are largely amplifying the gains of large-cap growth stocks. And it's easy to see why investors want t ...