Weight Watchers stock gains 18% after Oprah loses 18 kg
Shares of US-based firm Weight Watchers jumped by almost a fifth following the news that media personality Oprah Winfrey had lost 18 kg by following the company’s latest guidance. This marked the biggest move for Weight Watchers shares in 10 months. Earlier in 2015, Oprah had bought 10% of the company and recently featured in its new advertising campaign.