After-hours buzz: Intuitive Surgical, Google, Chipotle & more
Intuitive Surgical - The maker of the da Vinci Surgical System posted earnings of $3.90 a share on revenue of $579 million, falling short of expectations for $4.04 a share on sales of $622 million. The company initially warned about its weak sales earlier this month. Adding to woes, the company said it expects 2013 full-year sales growth of between flat and up 7 percent, versus expectations for a gain of 14 percent.

Separately, the company's CEO revealed that the company received a warning letter from the FDA concerning a facilities inspection also requesting more information on design elements relating to a "particular product." Shares tumbled below in extended-hours trading, falling below $400 for the first time since October 2011.

Advanced Micro - The semiconductors maker posted a narrower-than-expected loss of 9 cents a share, versus expectations for a loss of 12 cents a share. The company reported revenue of $1.16 billion, above expectations for $1.11 billion. In addition, the firm said it projects current-quarter revenue to be up 22 percent versus the second quarter. Still, shares tumbled after a brief pop in extended-hours trading.

Capital One - The credit-card provider posted earnings of $1.87 a share on revenue of $5.64 billion, exceeding Wall Street expectations for $1.72 a share on sales of $5.53 billion. Shares gained in extended-hours trading.

Chipotle Mexican Grill - The fast-casual restaurant chain posted earnings of $2.82 a share on revenue of $817 million, edging past forecasts for $2.81 a share on sales of $803 million. In addition, the company said it expects full-year same-store sales growth in the low to mid-single digits. Shares jumped in extended-hours trading.

Stryker - The medical equipment maker posted earnings of $1 a share, excluding one-time items, missing expectations for $1.03 a share, while reporting sales of $2.21 billion, edging past forecasts for $2.19 billion. In addition, the company handed in a full-year earnings outlook that fell-short of estimates. Shares were largely unchanged in extended-hours trading.

Apache - The energy company announced it will sell its Gulf of Mexico shelf assets for $3.75 billion to Fieldwood Energy. The deal is expected to close by the end of September. Shares rose in extended-hours trading.

Yelp - The business ratings and reviews website said it will acquire SeatMe, a web and iPad-app based reservation provider, in a deal worth $12.7 million in cash and stock. Shares edged higher in extended-hours trading.

Skyworks - The semiconductor company announced a new $250 million share repurchase program. Shares soared in extended-hours trading.

TripAdvisor - The travel website was initiated with a "buy" rating at Ascendiant Capital Markets with a price target of $76. Shares ticked higher in extended-hours trading.

Dick's Sporting Goods - The sports apparel retailer was initiated with a "sector perform" rating at RBC Capital and a price target of $55. Shares were unchanged in extended-hours trading.