UnitedHealth shares fall after WSJ flags Justice Department investigation. Follow along for live updates on stocks and other markets, including the Dow Jones Industrial Average, S&P 500 and Nasdaq Composite.

U.S. stocks are seeing their early losses deepen on Thursday, with the Dow Jones Industrial Average down 400 points and the S&P 500 retreating after notching back-to-back record closing highs. Among the S&P 500's 11 sectors,

Crude futures hold onto moderate gains as near-term supply concerns are partly offset by a bigger-than-expected 4.6 million barrel increase in U.S. crude stockpiles despite a drop in net imports.