On Tuesday, U.S. stock futures pointed to modest gains at the open, while analysts attribute this deviation is driven by geopolitical fear, including former Federal Bureau of Investigation head James Comey's testimony to a Senate at the end of this week.
S&P 500 futures dropped 5.75 points, or 0.2%, to 2,429.00, while Dow Jones Ingustrial Average futures lost 42 points, or 0.2%, to 21,134.00. Nasdaq-100 futures fell by 10.50 points, or 0.2%, to 5,870.50.