After-hours buzz: Amazon, Microsoft, Zynga, DuPont & more

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

Amazon.com - The online retail giant posted a loss of 9 cents a share, excluding one-time items, in line with expectations, on revenue of $17.09 billion, topping estimates for $16.77 billion. Meanwhile, the company issued current-quarter revenue guidance range that was below Wall Street forecasts. Still, shares spiked higher in extended-hours trading.

(Read More: Stocks end nearsession highs, S&P 500 above 1750; Apple climbs)

Microsoft - The software giant posted earnings of 62 cents a share on sales of $18.53 billion, easily beating expectations for 54 cents a share on revenue of $17.79 billion. Shares rallied in extended-hours trading.

Zynga - The social videogame services provider posted a loss of 2 cents a share on sales of $152 million, topping estimates for 4 cents a share on revenue of $143 million. Meanwhile, the company handed in current-quarter results that were below expectations. Separately, the company said it hired Clive Downie, an executive from a mobile gaming company, to be its new COO.

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DuPont - The chemical company announced plans to spin off its performance chemicals segment. The new company will be an independent, publicly-traded company following the separation. Shares jumped in extended-hours trading.

Express Scripts - The pharmacy benefit management organization posted earnings of $1.08 a share, in line with estimates, on sales of $25.92 billion, edging past expectations for $25.02 billion. Meanwhile, the company issued current-quarter earnings guidance that was on the conservative side, while raising the lower end of its full-year guidance. Shares declined in extended-hours trading.

Outerwall - The movie and game rental kiosk company posted earnings of 97 cents a share on revenue of $587 million, exceeding Wall Street expectations for 88 cents a share on sales of $575 million. The company also handed in current-quarter guidance that was mostly in line with estimates. The company was formerly called Coinstar. Shares jumped in extended-hours trading.

Western Digital - The computer hard disk drive manufacturer posted earnings of $2.12 a share, ex-items, on revenue of $3.8 billion, edging past projections for $2.05 a share on sales of $3.78 billion. Shares edged higher in extended-hours trading.

Wynn Resorts - The operator of high-end hotels and casinos reported earnings of $1.84 a share, ex-items, on revenue of $1.39 billion, topping forecasts for $1.66 a share on sales of $1.36 billion. Still, shares dipped in extended-hours trading.

Deckers Outdoor - The footwear manufacturer reported earnings of 95 cents a share on revenue of $387 million, beating expectations for 72 cents a share on sales of $386 million. Shares soared in extended-hours trading.

Maxim Integrated Products - The semiconductor company reported earnings of 41 cents a share, ex-items, topping estimates by 2 cents a share, while revenue was in line with forecasts at $585 million. Shares rallied in extended-hours trading.

Netgear - The networking equipment company posted earnings of 58 cents a share, ex-items, matching Wall Street expectations, on revenue of $362 million, beating estimates for $354 million. But the company issued current-quarter sales outlook that disappointed forecasts, pushing shares sharply lower in extended-hours trading.

Cliffs Natural Resources - The mining and iron ore company posted earnings of 65 cents a share on revenue of $1.55 billion, against expectations for 71 cents a share on sales of $1.48 billion. Shares rose in extended-hours trading.

Eastman Chemical - The chemicals, fibers, and plastics manufacturer reported earnings of $1.68 a share, beating expectations by 4 cents a share, while revenue was in line with estimates at $2.34 billion. Still, shares slid in extended-hours trading.

Cerner - The health care information technology reported earnings of 35 cents a share, in line with estimates, on revenue of $728 million, falling short of projections for $757 million. Adding to woes, the company handed in current-quarter guidance that fell short of expectations. Shares tumbled in extended-hours trading.

Qlik Technologies - The software company reported earnings of 5 cents a share on sales of $104 million, versus expectations for 3 cents a share on revenue of $108 million. But the company handed in current-quarter profit and sales outlook that disappointed Wall Street analysts. Shares plunged more than 15 percent in extended-hours trading.

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

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