Photographer: Adam Glanzman/Bloomberg Shares of Peloton Interactive Inc. tumbled the most in more than four years after the company provided a weaker-than-expected revenue forecast for the fiscal third quarter, disappointing investors who hoped a recent hardware revamp would spur a long-promised turnaround. It also said its chief financial officer, Liz Coddington, will be leaving the company to pursue another opportunity. Coddington will stay through March and Peloton has begun a search for her successor ...