U.S. markets opened lower Wednesday due to Chinese growth concerns and threats of U.S. sanctions against Russia over the Ukraine. As for individual names, Men's Wearhouse said it would buy Jos. A. Bank on Tuesday in a deal worth around $1.8 billion. Krispy Kreme is expected to post Q4 earnings of 13 cents a share after the bell, and Williams-Sonoma is also releasing results with expectations of $1.35 a share. Finally, GM is down, and the automaker may face criminal charges after the recall of 1.6 million cars.