Take a look at some of Thursday's midday movers:
AbbVie - The drug maker gained after reporting quarterly revenue well above street expectations.
Aegerion Pharmaceuticals - The biopharmaceutical company plummeted after reporting a third-quarter loss and significantly decreasing its 2014 full-year guidance. Jefferies downgraded the stock to hold from buy.
Barrick Gold - The gold producer and competitors including Newmont Mining, AngloGold Ashanti and Yamana Gold fell along with the price of the precious metal.
Chevron - The oil producer rose after reporting a bigger-than-expected quarterly profit.
Clorox - The maker of cleaning products edged higher after posting better-than-expected quarterly sales.
Exxon Mobil - The oil producer climbed after reporting a better-than-expected third-quarter profit.
Gilead Sciences - The drug maker fell on weaker-than-expected sales of its treatment for Hepatitis C.
Honeywell International - The manufacturer edged up after increasing its annual dividend to $2.07 a share.
Mead Johnson Nutrition - The maker of infant formula fell on news French food company Danone purchased a $566 million stake in a Chinese infant formula maker, dampening speculation it would try to acquire Mead Johnson.
Priceline Group - The online travel company and rival Orbitz Worldwide gained on Expedia's strong earnings.
Rockwell Collins - The maker of aircraft systems rose after reporting quarterly sales increased by about 15 percent year over year.
Sony - The maker of electronic equipment rose after posting a smaller-than-expected operating loss in its second quarter.
United Continental Holdings - The carrier and others including Delta Air Lines, American Airlines Group, Spirit Airlines and Southwest Airlines rose as oil prices fell.
Visa - The payment processing company rose after Argus Research upgraded the stock to buy from hold.
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