System1 gains as Tesco, Pfizer marketing deals aid revenue jump

System1 Group (AIM:SYS1) climbed 23% on Wednesday as the marketing firm said recent deals with the likes of Tesco, Pfizer and M&S meant full-year expectations would be smashed. Some 60 new clients signed with AIM-listed System1 over the third quarter, taking the number to over 200 for the year so far, the company updated on Wednesday. This included the likes of Pfizer, M&S, Tesco, easyJet, Toyota, Muller, B&Q, and Just Eat most recently, with System1 providing tests to assess effectiveness of marketing idea ...