Assassin's Creed maker Ubisoft plunges 17% after Chinese giant Tencent ups stake Chinese tech giant Tencent increased its stake in Ubisoft via an investment in an entity controlled by the Guillemot family who founded the French gaming firm. Tencent has increased its stake in French games maker Ubisoft, the company behind popular franchises like Assassin's Creed. But analysts said this has effectively closed the door on a full takeover of the company. Rafael Henrique | Sopa Images | Lightrocket | Getty Images Shares of games developer Ubisoft plunged more than 17% on Wednesday after prospects of a full takeover were...