U.S. Markets Open Under Uncertain Economic Conditions

CHICAGO, IL - SEPTEMBER 23: Traders signal offers on Standard & Poor's 500 stock index options at the Chicago Board Options Exchange (CBOE) on September 23, 2011 in Chicago, Illinois. U.S. markets were wavering at the open today following yesterday's big selloff as investors to continue to fear the economy may be poised to slide into an extended global recession. The Standard & Poor's 500 cash index has lost more than 7 percent this week while the Dow has dropped 6.7 percent. (Photo by Scott Olson/Getty Images)