In this photo illustration, the French premium television channel, studio and distributor, Canal+ (plus) logo is seen displayed on a smartphone.
Paris-listed shares of Vivendi were meanwhile up 33.3% at 09:28 a.m. London time.
Shares were trading around 252 British pence ($3.19) at 9:13 a.m. London time, down 13.1% from the open.
Media holding company Vivendi's shareholders last week agreed to spin off Canal+, a pay TV and production company known for its live sports broadcasting and Studiocanal, which makes the Paddington film franchise.
"[Canal+] used to be a very French-centric company, with approximately 9 million subscribers, and, in just 10 years, it has tripled its number of subscribers.
Persons:
Maxime Saada, CNBC's, Saada, Havas, Yannick Bolloré
Organizations:
Vivendi, Media, Paddington, Louis Hachette Group
Locations:
Paris, London, France, Africa, Eastern Europe, Asia