Why Shares of TransMedics Stock Plunged This Week

TransMedics' revolutionary Organ Care System, high sales growth, and newfound profitability combine with its towering valuation to create wild volatility. Shares of TransMedics (TMDX -5.03%), a leader in heart, lung, and liver transplant technologies, have plummeted 15% in the past week as of 4 p.m. ET Thursday, according to data provided by S&P Global Market Intelligence. While no specific news led to the company's drop, the movement is probably tied to the stock's increasing volatility following a remarka ...