Intuitive Surgical (ISRG:US) shares fell nearly 8% in Friday’s trading session following the company's third-quarter earnings report, which was mixed at best. 

Revenue of $1.74 billion, which represents a 12% year-over-year increase, fell slightly short of the estimate of $1.77 billion. The Vinci Surgical System installed base stood at 8,285 systems, marking a 13% year-over-year growth, but slightly below the estimated 8,311 systems.

The systems segment was the key source of the miss, indicating a higher mix of operating leases. Sales for this unit came in at $379.4 million, a decrease of 11% compared to the previous year and lower than the estimated $404.5 million.

“We are pleased by our customers’ continued adoption of da Vinci surgery and their acceptance and use of our Ion and SP platforms,” said Gary Guthart, Intuitive CEO. “We continue to focus on supporting their needs through the pursuit of expanded indications, delivering excellence in quality and supply, and increasing our productivity.”

Congress members Ro Khanna, Bill Keating, and Josh Gottheimer were all trading ISRG shares this year. Moreover, Rep. Daniel Goldman reported a $15,000 - $50,000 purchase of shares earlier this year.

On the other hand, Rep. Khanna sold $100,000 - $250,000 worth of stock on June 29, when it closed at $338.49.

ISRG shares were up 3% YTD based on Thursday’s close. They were seen trading near $250 on Friday.