Zumiez–Piper Jaffray upgraded the retailer's stock to "overweight" from "neutral", based on factors such as the success of the company's streetwear-inspired fashions as well as cost cuts.

Salesforce.com– Deutsche Bank upgraded the stock to "buy" from "hold", saying it was now more comfortable with the company's handling of various ongoing issues. It also said valuation is reasonable following a 20 percent drop from the stock's highs.

Apple–The iPhone maker won a nearly $120 million award from Samsung in the month-long patent trial in California. However, that jury award was much less than Apple had sought.

JPMorgan Chase–The mega bank said its exposure to Russia amounted to $4.7 billion as of March 31, and that it is closely monitoring the events related to Ukraine and the impact of sanctions by the U.S. and other countries.

Microsoft–The software giant's biggest shareholder is now former CEO Steve Ballmer, rather than founder Bill Gates. An SEC filing shows that Gates sold 4.6 million Microsoft shares last week, dropping him to second behind Ballmer. Gates has been selling Microsoft shares regularly to fund his charitable foundation.

Sotheby's—Sotheby's has successfully held off an effort by Third Point's Daniel Loeb to remove the auction house's shareholder rights plan. A judge ruled Friday that he would not throw out Sotheby's "poison pill", which limits the amount activist investors can buy to 10 percent.

General Motors—GM is recalling nearly 52,000 SUV models because of a possibly inaccurate fuel gauge.

Electronic Arts–The game maker is reportedly close to an agreement with Comcast to stream games through Comcast's advanced X1 cable delivery system, according to Reuters.

Oracle– Bernstein upgraded Oracle to "outperform" from "neutral."

Chipotle Mexican Grill–Raymond James upgraded the restaurant chain's stock to "outperform" from "market perform."

—By CNBC's Peter Schacknow

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