Take a look at some of Friday's midday movers:
Yum Brands - The fast food chain's stock was hit hard by food safety concerns in China. In a statement, Chinese regulators said that Yum's KFC was supplied with chicken in China that contained excessive amounts of antibiotics.
Big Lots - The discount retailer moved higher after Citigroup analyst Nathan Rich initiated coverage on the stock at "buy" with a price target of $36.
Goldcorp - The stock turned lower after Credit Suisse cut the gold miner to "neutral" from "outperform" and slashed the target price to $45 from $58.
ArcelorMittal - The world's biggest steelmaker will write down the value of its European business by $4.3 billion.
Greenbrier - The maker of railroad freight car equipment rejected a sweetened offer from American Railcar (ARII), controlled by activist investor Carl Icahn, sending shares lower.
Cintas - The stock is down despite earnings and guidance that were roughly in line with expectations; gross margins were weaker.
On track to be the worst performer this week on the S&P 500: Electronic Arts. The video game maker bounced off intraday lows after the NRA's Wayne LaPierre mentioned violent video games in a speech today but, the stock is still on track to finish down more than 10% this week.
(Read More: See CNBC's Market Insider Blog)
—By CNBC's Lori Spechler
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