AdvertisementBillionaire Investor Robert Mercer To Step Down From Firm, Selling Stake In BreitbartNovember 02, 2017Jim ZarrolifacebookEmailRobert Mercer and his daughter Rebekah Mercer attend the 2017 TIME 100 Gala. He announced that he is stepping down from the hedge fund he co-heads and is selling his stake in Breitbart News to his daughters. (Patrick McMullan via Getty Images)