Take a look at some of Wednesday's midday movers:
Wynn Resorts moved higher after a Goldman report calling for a special dividend.
Questcor Pharmaceuticals plummeted after a note by Citron Research that said Aetna was dropping most of its coverage on the company’s multiple sclerosis drug Acthar.
Cracker Barrel soared after posting quarterly earnings that nearly doubled.
Homebuilders, including Pulte, Ryland, DR Horton, KB Homes and Lennar all rose after a strong August existing home sales report.
Achillion gained ground after BofA/Merrill raised its rating to "buy" from "underperform," saying it’s more optimistic on the hepatitis-c drugmaker’s drug combo. But it cut Idenix to "neutral" from "buy," saying it has “limited hope” for that company’s own treatments.
Groupon rose after the company said it is launching a new mobile payments service in the U.S.
3M was higher despite its cautionary outlook for the economy, saying its previous long-term 7 to 8 percent revenue growth target is now a stretch.
Toymakers, including Mattel , Hasbro and Jakks Pacific all fell after Needham downgraded the stocks to "hold" from "buy," citing red flags regarding third-quarter sales.
Airlines, including United Continental, Delta, US Airways, Southwest and JetBlue soared as oil prices continued to sell-off.
Bon-Ton Stores moved lower after Credit Suisse cut its rating to "underperform" from "neutral," based on valuation.
Vera Bradley moved higher after JPMorgan upgraded the women’s accessories retailer to "overweight" and raised its price target to $30.
—By CNBC's Rich Fisherman.
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