After the quiet period post IPO, analysts are effusive on Fitbit, flooding the grapevine with praise. And that has helped the company's stock price. The company owns 85% of the U.S. market, up from 59% just two years ago. Analysts say Fitbit is in pole position for wearables, which is only going to get bigger. IDC says consumer spending is growing faster on wearables than any other consumer electronics segment.