** Shares of French advertiser close in onall-time high -- shares up 3.1 pct - within a whisker of peakhit 2 yrs ago
** Brokerage Oddo draws attention to a May 2016 interview inwhich French billionaire and Vivendi CEO VincentBollore evoked the possibility of a tie-up between Havas andVivendi
** Bollore owns nearly 60 pct of Havas and around 20 pct ofVivendi, making him the biggest shareholder in both cos
** If tie-up with Vivendi does not materialize, Oddo sees 2paths forward -- going it alone or being taken over by a 3rdparty in the sector such as WPP or Dentsu
** Stock 2nd top gainer on the SBF 120 behindEssilor whose deal with Luxottica puts itfirmly on top of France's Eclaireur index