Intuitive Surgical shares slumped after the company posted a 14 percent decrease in third-quarter net income on declining sales of its da Vinci surgical system.
Revenue slipped 7 percent from a year earlier, and the company said full-year sales would come in on the lower end of its previously cut forecast range.
Intuitive said its third-quarter results were affected by continued slow growth in the use of da Vinci in gynecology procedures. Shares fell 5 percent Friday afternoon. (What's the stock doing now? Click here)
Options expert Jon Najarian said the da Vinci's high cost of $1.5 million is one reason for the company's revenue drop.