Dow futures indicate triple-digit negative open, ahead of McDonald's, Pfizer, EA earnings By: CNBC.com News January 30, 2018 at 05:26 AM EST U.S. stock index futures were trading sharply lower ahead of Tuesday’s open. Read More >> Related Stocks: Dow Industrials SPDR PowerShares QQQ S&P 500 Ishares Core ETF SPDR S&P 500 ETF Trust