Take a look at some of Thursday's midday movers:
Conn's plummeted after the electronics and home appliance retailer cut its profit forecast for the year, citing weaker sales growth and higher bad debts.
Blackberry moved higher following news that Facebook bought WhatsApp for $16 billion as the deal appeared to indicated there's value in Blackberry's mobile messenger unit.
Coca-Cola gained ground after increasing its quarterly dividend by 8.9 percent to 30.5 cents a share.
Avis rose after posting better-than-expected earnings, boosted by strong volume growth and pricing. Hertz moved higher as well.
Juniper Networks climbed on a German magazine report that Nokia was interested in buying the company to merge it into its telecommunications gear business.
Raptor Pharmaceuticals gained ground on positive news from its Huntington's Disease treatment in a clinical trial.
Hormel Foods moved higher after the packaged foods company said its earnings rose 18 percent, benefiting from its recent purchase of Skippy peanut butter. While earnings were a penny below street estimates, it did reaffirm fiscal 2014 guidance.
DirecTV rose as earnings and revenue beat street forecasts. It also announced a new $3.5 billion share buyback program. But it did say it added few subscribers in the U-S and Latin America as competition intensified.
Trinity Industries gained ground as it reported better than expected fourth quarter earnings and revenue and guided current-quarter earnings and fiscal 2014 guidance above consensus views.
Tim Horton's rose as the Canadian coffee and doughnut chain said it would buy back nearly $400 million of its stock and raise its quarterly dividend.
Public Service Enterprise Group jumped after the New Jersey utility posted better than expected fourth quarter earnings.
Blackhawk Network Holdings, the gift card unit of Safeway that was spun into its own publicly traded company, fell after the grocery chain said it would distribute the remaining 37.8 million shares of the company that it owns to Safeway shareholders.
Onconova Therapeutics lost ground on 6 times its normal trading volume after the biotech said its myelodysplastic syndrome treatment failed a late stage clinical trial. Its market cap falling to $168 million.
Thermo Fisher Scientific climbed after Goldman Sachs upgraded the stock to buy from neutral with a price target o $153 a share (from $114).
Quanta Services the best performing stock in the S&P 500 after reporting better than expected fourth quarter results.
—By CNBC's Rich Fisherman.
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