Takeover: Why the Codemasters share price just surged 20% More on: The Codemasters(LSE:CDM) share price has been rising steadily this year, but it soared 20% in a single day on Monday. The AIM-listed video game developer has had a stellar 2020. Shareholders have seen a brilliant 115% return this year, despite everything that has happened in the world. US$12.3 TRILLION out of thin air… And if you click here we’ll show you something that could be key to unlocking 5G’s full potential... So what specifically happened to light a rocket under the Codemasters share price? Codemasters racing ahead The share price jumped 108p, from 532p to 640p, in little under an hour on Monday 14 December. It’s a stunning surge for the racing-focused video game publisher.