Wall Street drops, S&P 500 confirms correction

The three major U.S. indexes all fell well over 3 percent for the week, with the Dow industrials and the Nasdaq posting their biggest weekly percentage declines since March.The S&P 500 ended about 10.2 percent down from its Sept. 20 closing record high, confirming it had entered a correction.The S&P last entered a correction earlier this year after posting a then record high in late January, and falling more than 10 percent by early February.