Take a look at some of Thursday's midday movers:
Hilton Worldwide rose as the hotelier returned to the market in the year's second-largest initial public offering.
Cisco Systems fell after its CFO cut the company's long-term revenue growth outlook.
General Motors edged higher after the auto manufacturer said it would sell its 7 percent stake in PSA Peugeot Citreon. The company also said it had sold the remainder of its holdings in Ally Financial for $900 million.
DirecTV gained after it forecast strong profit growth by 2016.
Aetna slid. At its investor meeting, CEO Mark Bertolini said the company will not reinstate individual insurance plans.
Hovnanian Enterprises rose after the homebuilder posted better-than-expected quarterly profits.
American Airlines Group gained after the carrier ordered $3.9 billion worth of regional jets from Brazil's Embraer and Canada's Bombardier.
Southwest Airlines rose after Bank of America/Merrill Lynch upgraded the carrier's stock to buy from neutral.
SanDisk fell after Nomura Securities downgraded the stock to reduce from neutral.
Texas Instruments declined after Nomura also cut its stock to reduce from neutral.
Weyerhaeuser gained after JPMorgan began coverage with an overweight rating.
Stanley Black & Decker rose after the power-tool company affirmed its 2013 outlook and issued in-line 2014 earnings guidance.
(Read More: See CNBC's Market Insider Blog)
—By CNBC's Rich Fisherman.
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