Napa Valley's Far Niente Wine Estates has sold a majority stake to private equity group GI Partners, the majority owners of Duckhorn Wine Company. The investment includes the Far Niente winery, as well as sister wineries Dolce, Nickel & Nickel, EnRoute and Bella Union. Though winery owners Beth Nickel, Erik Nickel, Dirk Hampson and Larry Maguire are still shareholders.