US stocks set for a tepid open, ahead of Pfizer, Apple, P&G earnings By: CNBC.com News July 31, 2018 at 06:02 AM EDT U.S. stock index futures fluctuated ahead of Tuesday’s open, as a two-day central bank policy meeting begins. Read More >> Related Stocks: Dow Industrials SPDR Nasdaq ETF S&P 500 Ishares Core ETF SPDR S&P 500 ETF Trust