US futures fluctuate ahead of the open, but trade uncertainty weighs By: CNBC.com News June 28, 2018 at 05:51 AM EDT U.S. stock index futures wavered ahead of Thursday’s open, as investors turned their attention to fresh economic data. Read More >> Related Stocks: Accenture Plc Dow Industrials SPDR KB Home Nasdaq ETF Nike Inc S&P 500 Ishares Core ETF SPDR S&P 500 ETF Trust Walgreens Boots Alliance