On the upside
Jefferies upgraded Questcor Pharmaceuticals (Nasdaq: QCOR) to a Buy rating and raised its price target to $28 from $24.
Shares of coal producer Alpha Natural Resources (NYSE: ANR) rose again after Mitt Romney vowed to increase coal production in the presidential debate last week.
On the downside
Edwards Lifesciences (NYSE: EW) warned that third quarter revenue will fall short of expectations.
Probability will develop mobile slot games using Glu Mobile (Nasdaq: GLUU) games but the stock price fell.
Owens Corning (NYSE: OC) cut its fiscal 2012 roofing unit revenue.
In the broad market, declining issues barely edged out advancers by a slim margin on the NYSE and by more than 9 to 7 on Nasdaq.