U.S. stock futures fell on Wednesday as geopolitical and trade concerns continued to nag at investors, taking the wind out of a rally seen at the start of the week. Earnings from Target Corp. and then later the release of minutes from the latest Federal Open Market Committee meeting are among the highlights of the session ahead. What are markets doing? Dow Jones Industrial Average futures YMM8, -0.71% slipped 193 points, or 0.8%, to 24,652, while S&P 500 futures ESM8, -0.61% lost 18.85 points, or 0.7%, to 2,707.50. Nasdaq-100 futures NQM8, -0.94% fell 71.75 points, or 1%, to 6,837.50. On Tuesday, the Dow Jones Industrial Average DJIA, -0.72% dropped 178.88 points, or 0.7%, to reach 24,834.41. The S&P 500 SPX, -0.31% lost 0.3% to end at 2,724.44, while the Nasdaq Composite Index COMP, -0.21% shed 0.2% to close at 7,378.46.via