Barnes & Noble Inc., up $4.31 at $22.08
Technology blog TechCrunch reported that Microsoft Corp. is considering buying the bookstore chain's Nook e-book business outright.
Cooper Tire & Rubber Co., down $1.99 at $24.35
The tire company said that its first-quarter net income more than doubled, but revenue missed Wall Street expectations.
News Corp., up $1.46 at $33.44
The media company beat Wall Street's forecast for the January-March quarter, helped by growing revenue from pay TV networks.
Activision Blizzard Inc., down 87 cents at $14.39
The video game maker warned that the holiday season could be more difficult than it expected because of uncertainty about the global economy.
Tesla Motors Inc., up $13.61 at $69.40
The Palo Alto, Calif.-based electric car maker posted its first quarterly net profit since it was founded a decade ago.
Green Mountain Coffee Roasters Inc., up $16.56 at $76.04
The coffee company said its second-quarter net income rose 42 percent, and it raised its full-year earnings forecast.
Monster Beverage Corp., down $2.96 at $54.01
The energy drink maker's first-quarter net income fell 17 percent despite stronger sales, weighed down by unfavorable currency rates.
LivePerson Inc., down $4.63 at $8.12
The customer service provider reported a loss for its first quarter and issued a weak forecast for the current quarter.