US stock futures rise after big fall

By STAN CHOE | August 9, 2011 | 7:43 AM EDT

The New York Stock Exchange is shown, Tuesday, Aug. 9, 2011 in New York. Stocks tanked again Tuesday as many global markets entered official bear market territory after one of the worst days on Wall Street since the collapse of Lehman Brothers in 2008.(AP Photo/Mark Lennihan)

NEW YORK (AP) — U.S. stock futures are rising, but only after swinging wildly following the worst day for stocks since 2008.

About two hours ahead of the opening bell, Dow Jones industrial futures are up 172 points, or 1.6 percent, at 10,898. They were down more than 200 points earlier in the morning, but swung higher to be up more than 300 points.

S&P 500 futures are up 20, or 1.8 percent, to 1,131. Nasdaq 100 futures are up 37, or 1.8 percent, to 2,075.

Futures do not always accurately predict how stocks will trade once the market opens.

The Dow plunged 634.76 points on Monday in the first trading since Standard & Poor's downgraded the U.S. credit rating. Worries are rising that both the U.S. economy and Europe's debt problems are worsening.