After-hours buzz: CSCO, JCP, NTAP, FUEL & more

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

Scott Mlyn | CNBC

J.C. Penney said its net loss narrowed to 77 cents per share, which was better than 80 cent loss Wall Street projected, but revenue fell to $2.76 billion, missing expectations for $2.81 billion.

Shares tumbled as much as 8 percent lower, before recovering.

Cisco posted better-than-expected quarterly earnings and revenue results, but the stock pared initial gains as guidance trailed estimates.

NetApp shares fell more than 3 percent after the computer storage provider handed in second-quarter earnings that beat analysts' expectations by a penny.

It also forecast adjusted third-quarter earnings that were below Wall Street expectations.

Shares of the small-cap digital ad provider Rocket Fuel soared after the company reported better-than-expected quarterly results, boosted by a 64 percent increase in Ex-TAC revenue.

The stock rose more than 13 percent after the announcement.

Shares of Cyberark Software, an Israel-based security firm, jumped more than 15 percent after the company said its third-quarter revenue rose 66 percent in comparison with a year ago, lifted by its maintenance and professional services unit.

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