ActivumSG is a Berlin-based real estate investment manager founded in 2007, focused on opportunistic and value-add strategies across European real estate. It invests across the capital stack through direct investments, corporate platforms and special situations, with activity in the UK, Germany, Spain, the Netherlands and Denmark. Founder relevance is strongest for opportunities tied to real estate, infrastructure, construction, senior living, venue-based entertainment or gaming rather than generalist venture deals.