US futures under pressure after Fed hikes rates; political turmoil adds unease By: CNBC.com News September 27, 2018 at 05:45 AM EDT U.S. stock index futures fluctuated ahead of Thursday's open. Read More >> Related Stocks: Dow Industrials SPDR Nasdaq ETF S&P 500 Ishares Core ETF SPDR S&P 500 ETF Trust