SAN FRANCISCO--(BUSINESS WIRE)--Fitbit, Inc. (NYSE:FIT) the leader in the connected health and fitness market, today reported revenue of $711.6 million, GAAP diluted net income per share of $0.26, non-GAAP diluted net income per share of $0.35, and adjusted EBITDA of $125.3 million, for its fourth quarter of 2015.