U.S. stocks sank on Wednesday, pushing the S&P 500 to close below 1,900 for the first time since September as investors grew anxious about weak energy prices, U.S. corporate earnings and the global economy. All 10 S&P 500 sectors ended in the red, led by consumer discretionary shares, the healthcare sector and technology. Selling was broad, with decliners outpacing advancing issues on the NYSE more than 7 to 1 and on the Nasdaq by more than 6 to 1. All three major indexes are in correction territory. The S&P 500 is now down 11.3 percent below its May 21, 2015, closing lifetime high.