(Bloomberg) -- Tencent Holdings Ltd. and Ubisoft Entertainment SA’s founding Guillemot family are considering options including a potential buyout of the French video game developer after it lost more than half its market value this year, according to people familiar with the matter. Most Read from BloombergThe Corner Store ComebackNYC Schools Reverse Course on Cell-Phone Ban After Parents BalkRoofs of Mexico City’s Massive Food Market Will Power Public BusesMexico City Restricts Airbnb Rentals