Intuitive Surgical, AmEx, Skyworks: After-Hours Trading (Update 1)

Updated from 6:07 p.m. ET for latest share prices, added information on American Express.

NEW YORK ( TheStreet) -- Shares of Intuitive Surgical ( ISRG) fell in late trades on Thursday despite another above-consensus quarterly profit from the high-flying maker of robotic surgery equipment.

Intuitive Surgical has now beaten Wall Street's earnings per share view in nine straight quarters, according to Thomson Reuters data. For the three months ended Dec. 31, the Sunnyvale, Calif.-based company earned $151 million, or $3.75 a share, on revenue of $497 million, up 22% from last year.

Investors may be keying off news that at least some of the company's 12% upside surprise was fueled by a lower income tax rate in the latest quarter. Intuitive Surgical said its full-year income tax rate came in at 30.2% of pretax income, down from a 32.1% rate recorded through the first three quarters of the fiscal year. The decline in the latest quarter was attributed to "a favorable geographic split of pre-tax earnings and lower state taxes."

The stock was last quoted at $452.50, down 4.7%, on volume of nearly 110,000, according to Based on Thursday's regular-session close at $474.65, the shares have risen more than 60% in the past year, hitting a 52-week high of $443 in October.

The company said it sold 152 of its da Vinci robotic surgery systems in the latest quarter vs. sales of 124 systems in the same period a year ago, and 133 systems in the third quarter.

Wall Street had cooled on Intuitive Surgical ahead of the report, mainly because of valuation, with 11 of the 17 analysts covering the shares at either hold (10) or underperform (1), and the median 12-month price target at $467.50.

Check out TheStreet's quote page for Intuitive Surgical for year-to-date share performance, analyst ratings, earnings estimates and much more.

American Express

Shares of Dow component American Express ( AXP) slipped 2% to $49.90 on volume of more than 400,000 after the credit card issuer came in a bit short of Wall Street's revenue expectations in its latest quarter.

AmEx grew net income by 12% year-over-year to $1.19 billion in the December-ended period from $1.06 billion in the year-ago equivalent quarter. On a per share basis, the company earned $1.01 per share in its fiscal fourth quarter, 3 cents ahead of the average estimate of analysts polled by Thomson Reuters for a profit of 98 cents a share.

Revenue net of interest expense came in at $7.74 billion in the quarter vs. the consensus view of $7.92 billion though. That performance was up 7% from last year's equivalent total, reflecting "continued strong growth in cardmember spending and higher travel commissions and fees" but the company also said it experienced a "slight decrease in net interest income that reflected lower yields on the loan portfolio."

Based on Thursday's regular-session close at $50.95, AmEx shares are up 10.8% in the past year, but its 52-week high of $53.80 dates back to July 7.

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