Updated at 4:35 p.m. ET
After the huge sell-off Wednesday, U.S. stocks fell sharply again Thursday. At one point, the Dow was down nearly 700 points. By late afternoon, it had regained some ground but closed down 546 points or a little more than 2 percent.
Over the past two days, the Dow has lost 1,378 points. The S&P 500 was down 2 percent for the day. The Nasdaq lost 1.25 percent.