Oprah’s windfall on Weight Watchers tops $340 million By: MarketWatch August 04, 2017 at 11:13 AM EDT With Weight Watchers soaring after a blowout earnings report, Oprah Winfrey could make over $340 million on her initial investment of $43 million. Read More >> Related Stocks: Berkshire Hathaway Standard & Poors 500 Willis Towers Watson Public Ltd