After-hours buzz: LULU, NTNX, AMBA & more

Brendan McDermid | Reuters. See which stocks are posting big moves after the bell.·CNBC

Check out the companies making headlines after the bell:

Lululemon Athletica (NASDAQ: LULU) shares rose 4.7 percent during extended trading. The athletic clothing company's second quarter earnings and revenue came in above Wall Street estimates. Same-store sales also exceeded estimates.

Palo Alto (NYSE: PANW)'s stock rose 5.6 percent after hours following the company's fourth quarter earnings report. The company's revenue and earnings for the period easily topped analysts' expectations.

Nutanix (NASDAQ: NTNX) shares rose 3.4 percent during extended trading after the company reported a loss of 33 cents per share, 5 cents better than Wall Street analysts' estimates. The cloud computing also posted a top line that exceeded expectations.

Shares of Ambarella (NASDAQ: AMBA) fell nearly 10 percent despite posting third quarter earnings that beat the Street's forecasts. The video technology company's non-adjusted gross margin shrunk to 63 percent in the quarter, down from 67.1 percent in the same time last year. Ambarella repurchased 595,770 shares during the quarter.



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