After hours buzz: Cisco, NetApp, Amgen and more

Traders on the floor of the New York Stock Exchange.
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Traders on the floor of the New York Stock Exchange.

Take a look at some of Wednesday's after-hours buzz:

Cisco fell more than 1 percent in extended-hours trade after it announced a restructuring that will cut 6,000 jobs, or about 8 percent of its workforce. The networking equipment firm also posted earnings and revenue that beat estimates. It has struggled to expand in China's technology market, which is expected to grow in 2014 by 7.1 percent from a year ago.

Data storage company NetApp gained more than 0.9 percent in after-hours trade following reports of better-than-expected quarterly results. Higher branded storage equipment sales and increased revenue from hardware maintenance contracts.

Amgen traded more than 2 percent lower in extended-hours trading on news that a drug trial failed to achieve its goal of improving overall patient survival.

As the only blue-chip stock to close in the red, Wal-Mart continued a slight decline in after-hours trading ahead of earnings before the bell on Thursday. Sales at the big-box retailer have declined for a year in the U.S. as the company has struggled to compete with e-commerce sites such as Amazon.com.

SeaWorld Entertainment moved higher in extended-hours trade after falling more than 30 percent on revenue decline and a lowered sales forecast.The theme park operator has faced significant pressure since the documentary "Blackfish" criticized the way SeaWorld treats its animals.

—By CNBC's Evelyn Cheng

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