Shares of Target Corp tumbled after the big-box retailer forecast a surprise drop in holiday-quarter sales.
Retail stocks slumped broadly, including steep declines in shares of Macy's Inc, Best Buy Co Inc and Foot Locker.
Micron Technology shares dropped after the company said it would reduce memory chip supply and make more cuts to its capital spending plan. The S&P 500 information technology sector and the Philadelphia SE Semiconductor index both sank.