US stocks set for a mixed open as investors wait for more news on tariffs By: CNBC.com News March 08, 2018 at 05:38 AM EST U.S. stock index futures fluctuated ahead of Thursday's open, as investors awaited more news surrounding the U.S.' tariff plans. Read More >> Related Stocks: Dow Industrials SPDR PowerShares QQQ S&P 500 Ishares Core ETF SPDR S&P 500 ETF Trust