James Park, chief executive officer of Fitbit Inc., right, rings a ceremonial bell during the company's initial public offering (IPO) on the floor of the New York Stock Exchange (NYSE) in New York, U.S., on Thursday, June 18, 2015. Fitbit Inc., which makes devices that track everything from exercise to sleep patterns, raised $732 million in an initial public offering, pricing its shares above the marketed range. Photographer: Michael Nagle/Bloomberg via Getty Images