On the upside
Fourth quarter earnings nearly doubled for Tyson Foods (NYSE: TSN) to surpass analyst expectations.
MEMC Electronic Materials (NYSE: WFR) director Steven Vincent Tesoriere acquired approximately $7.4 million worth of company stock over the past six months.
On the downside
Investors locked in profits on Acacia Research (Nasdaq: ACTG) whose stock price rose last week after announcing a $100 million stock repurchase plan.
Cliffs Natural Resources (NYSE: CLF) will idle production at two iron ore operations and delay parts of its expansion plans at its Bloom Lake Mine in Quebec.
Shares of Yingli Green Energy (NYSE: YGE) continued falling after warning of lower shipments in the third quarter.
In the broad market, advancing issues outpaced decliners by a margin of more than 7 to 1 on the NYSE and by more than 7 to 2 on Nasdaq. The Russell 2000 which tracks small cap stocks surged 13 points to 789.