Take a look at some of Thursday's after-hours buzz:
LinkedIn plunged more than 25 percent in extended-hours trade after the professional networking Web service lowered guidance for the year. The firm reported earnings that slightly beat estimates on revenue that missed.
AIG edged higher in after-hours trade following a quarterly earnings report that beat analysts' expectations. The largest U.S. commercial insurer also announced it would repurchase up to $3.5 billion in stock.
Altera gained more than 5 percent in extended-hours trading on a Reuters report that Intel agreed not to launch a hostile takeover until after June 1. Sources told the news wire that the agreement explains why Intel did not launch an offer for Altera's shares after an acquisition deal failed. Intel shares ticked lower.
Gilead Sciences gained more than 3 percent in after-hours trade after the pharmaceutical giant beat Street expectations for quarterly earnings and revenue.
Monsanto gained more than 3.5 percent in after-hours trade following a Bloomberg report that the world's largest seed company approached Syngenta about a takeover. Shares of Syngenta leaped more than 10 percent.
Visa fell more than 2 percent in extended-hours trade after the payment processing giant reported a
Western Union gained more than 2.5 percent in after-hours trade, reversing an initial decline on a quarterly earnings report that showed a
Solar stocks SunPower and First Solar plunged in extended-hours trade after posting quarterly losses. SunPower
FireEye shares gained as much as 4 percent in extended trade after reporting a
DreamWorks Animation plunged nearly 6 percent in after-hours trade after
Skyworks Solutions jumped more than 3.5 percent in after-hours trade after reporting a revenue increase of 58 percent that exceeded the firm's own guidance.
Athenahealth gained more than 8.5 percent after reporting earnings and revenue that topped estimates.