iShares MSCI Emerging Index Fund ( EEM ): +0.1% SPDR Select Sector Fund - Financial ( XLF ): +0.1% PowerShares QQQ Trust, Series 1 ( QQQ ):+0.6% iPath S&P 500 VIX Short Term Futures TM ETN ( VXX ): +3.4% Broad Market Indicators Broad-market exchange-traded funds, including IWM and IVV were mildly higher. U.S. stocks reversed earlier gains to trade lower at session's half, as lingering optimism following Friday's friendly labor market data dissipated. Earlier, signs of limited wage inflation, watered-down trade tariffs and a warmer relationship between the U.S. and North Korea helped buoy stocks.