Vincent Bollore continues to up his stake in Aegis on an almost daily basis, and now owns over 21 percent, Brand Republic reports (via MediaBuyerPlanner). The French financier and chairman of Havas is believed to be interested in forging a joint venture or partnership between Havas and Aegis. The U.K. Takeover Panel has said that offers for Aegis must be made by noon on Nov. 25.