Why Intuitive Surgical Stock Dropped 20.7% in April

Shares of Intuitive Surgical (ISRG -5.01%) sank 20.7% in April, according to S&P Global Market Intelligence. This is more than double the losses of the broad S&P 500 Index, which sank 8.8% last month. The robotic surgery company and maker of the Da Vinci surgical system reported its first-quarter earnings, which caused its stock to drop.