NEW YORK (TheStreet) -- FireEye (FEYE) - Get FireEye, Inc. Report stock is rising by 6.52% to $15.84 in after-hours trading on Wednesday, after releasing its 2015 fourth quarter preliminary financial results and announcing it will acquire threat intelligence company iSight Partners.

The company expects revenue to range between $184 million and $185 million for the quarter, short of the consensus estimate of $186.8 million. 

However, FireEye expects billings for the quarter between $256 million and $257 million and positive operating cash flow ranging from $7 million and $9 million.

Analysts have forecast for negative $12.3 million in cash from operations, Barron's reports. 

FireEye separately announced that it has paid $200 million to acquire iSight Partners.

"This acquisition extends FireEye's intelligence lead with an offering no one else in the industry can match," FireEye CEO David DeWalt said in a statement. "Forward-looking security organizations -- from governments to the private sector -- know threat intelligence is the key to establishing a robust security posture tuned for the threats targeting each organization."

Separately, TheStreet Ratings team rates FireEye as a "sell" with a ratings score of D.

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The company's weaknesses include its deteriorating net income, disappointing return on equity, generally disappointing historical performance in the stock itself and feeble growth in its earnings per share.

You can view the full analysis from the report here: FEYE

TheStreet Ratings objectively rated this stock according to its "risk-adjusted" total return prospect over a 12-month investment horizon. Not based on the news in any given day, the rating may differ from Jim Cramer's view or that of this article's author. 

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