Take a look at some of Wednesday's midday movers:
Discover Financial Services and eBay both moved higher after a credit card dealbetween Discover and eBay unit PayPal was announced. Under the deal, PayPal will issue payment cards to its more than 50 million users that will let them buy from merchants that already use the Discover Network.
Senior-housing stocks, including Brookdale Senior, Assisted Living Concepts, and Capital Senior Living all rose following news that Health Care Reit was buying Sunrise Senior.
Caterpillar and Joy Global lost ground after news that BHP Billiton was delaying its Olympic Dam project.
American Eagle Outfitters jumped after the teen-clothing retailer boosted its outlook for the year.
Wet Seal moved lower after the teen retailer reported a second-quarter loss and said it will continue to see a weak performance in its third quarter.
Las Vegas Sands advanced after widely-followed investor Mario Gabelli said the casino’s stock was oversold.
Qihoo 360 surged after the Chinese security-software provider reported better-than-expected earnings.
Homebuilders, including Lennar, DR Horton, KB Homes, and Pulte gained ground after Toll Brothersreported better-than-expected earnings.
Covidien fell after the company recalled its surgical tools, which would eventually affect its earnings.
Express lost ground after the clothing retailer slashed its profit outlook for the year.
Cemex moved higher after the Mexican cement maker said it is close to a refinancing deal and added it wants to sell a minority stake in its Latin American unit.
—By CNBC's Rich Fisherman.
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