After-Hours Buzz: PFE Announces $10 Billion Stock Buyback ... NKE, INTC & More

Check out which companies are making headlines after the bell Thursday:

Pfizer - The pharmaceutical giant announced at $10 billion stock buyback program. Shares edged higher in extended-hours trading.

Nike - The sports apparel retailer posted earnings of 76 cents a share on revenue of $6.7 billion, exceeding Wall Street estimates for 74 cents a share on sales of $6.64 billion. But the company said it expects lower China revenue during the first half of its new fiscal year and sees first-quarter gross margins to be "essentially flat." Shares slipped in volatile extended-hours trading.

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Intel - The tech company announced its CTO Justin Rattner is stepping down from his post and will be taking a leave of absence. Shares were largely unchanged in extended-hours trading.

Accenture - The IT services and consulting company posted earnings of $1.14 a share, excluding one-time items, edging past estimates by a penny a share. But the company posted sales of $7.2 billion, missing expectations for $7.42 billion. In addition, the company handed in current-quarter revenue outlook and full-year earnings guidance that fell short of Wall Street expectations. Shares declined in extended-hours trading.

Coinstar - Coinstar shareholders approved the company's name change to Outerwall. The company will begin trading under its new name and Nasdaq ticker symbol "OUTR" starting July 2. Shares were largely unchanged in extended-hours trading.

Adobe - The computer software company said it will acquire marketing technology provider Neolane in a deal worth $600 million. The transaction is expected to close in July. Shares ticked lower in extended-hours trading.

Ann - Stifel Nicolaus initiated coverage of the women's clothing retailer with a "hold" rating. Shares were unchanged in extended-hours trading.

Diamond Foods - The packaged foods company appointed Dave Colo as its COO, according to an 8-K filing.

Raytheon - The defense contractor acquired privately-held Visual Analytics, but financial terms of the agreement were not disclosed. Shares ticked higher in extended-hours trading.

Molycorp - The SEC announced that it has finished its investigation of the mining company's public disclosures and no enforcement action was recommended against the company. The SEC first initiated its investigation of the company in August. Shares rallied in extended-hours trading.

—By CNBC's JeeYeon Park (Follow JeeYeon on Twitter: @JeeYeonParkCNBC)

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