Planet Fitness' valuation has plummeted $400 million in five days after they banned a member who shared a photo of a 'trans woman' using a female locker room. The company's value dropped from $5.3 billion on March 14 to $4.9 billion on March 19, and its shares are down by 13.59 percent compared to a month ago. The decline follows Planet Fitness refusing to walk back its decision to ban a member who exposed a 'trans woman' shaving in a female locker room earlier this month. Patricia Silva was barred after she detailed an incident at her Alaska gym online,...