Top 5 Social Network Startup Investors in Belgium in May 2026

Index Ventures is an international venture capital firm with dual headquarters in San Francisco and London, investing in technology-enabled companies with a focus on e-commerce, fintech, mobility, gaming, infrastructure/AI, and security.

Investment focus

Software, E-Commerce, Internet
Series A, Series B, Seed
United States, United Kingdom, France

Portfolio highlights

Trouva — Trouva, launched in September 2015, is the marketplace for bricks and mortar independent shops, selling unique homeware and lifestyle products from hundreds of shops and boutiques. Trouva bridges online and offline in retail to offer click and collect, 1-hour delivery, and worldwide shipping in a single seamless platform.Trouva is one of the mostexciting e-commerce start-ups in Europe, backed by amazing VC and Angel Investors whose successes include Secret Escapes, Net-A-Porter, and Farfetch (BGF Ventures, Octopus Investments, C4 Ventures, Index Ventures & LocalGlobe).
Funding Circle — When Funding Circle was founded, they could see that businesses weren’t being given the finance to grow, while investors were making poor returns. They had a simple idea — let them support each other.By lending directly to businesses through Funding Circle, investors can now earn attractive returns to better provide for their future. Businessesget fast, easy access to funding to grow, create jobs, support local communities and drive the economy forward. They believe it’s better for everyone.
Raisin — Raisin is a savings and investment marketplace that connects retail customers with banks looking to expand deposit reach. The company's goal is to provide savers the best interest rates. The company gives access to exclusive savings products from all over Europe. Raisin assures a smooth investment process and the simple management ofinvestments with all of the partner banks via one single platform.Raisin was founded on 2012 and is headquartered in Berlin, Germany. Raisin DS was formed by a merger of the FinTech companies Deposit Solutions and Raisin in June 2021.

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Lorenz is co-founder and CEO Ghent-based start-up studio StarApps. He also co-founded early stage investment fund Pitchdrive. He previously created Netlog, Twoo (exit to Tinder), Realo (exit to Axel Springer), Delta (exit to eToro) and Rydoo (exit to Sodexo).

Investment focus

Software, Artificial Intelligence, SaaS
Seed, Pre-Seed, Series A
Belgium, United Kingdom, United States

Portfolio highlights

Axe — AI phone agents that handle millions of calls. Build and manage voice, email, and chat agents.
Otamiser — Otamiser Booster® is an automated solution that helps hoteliers and revenue managers secure bookings by improving a property's online presence on major OTAs such as Booking.com, Expedia, Trips.com, Kayak, Airbnb, and VRBO. It maximizes occupancy rates and revenue through optimizing 951 essential parameters, ensuring continuous optimization,full automation, seamless integration with CMS, PMS, and RMS systems, dedicated customer support, integrations with Cubilis and Hostaway, and a customized API for Revenue Management software.
Accurat — Accurat provides real-word shopper insights to support retail decision making with unprecedented accuracy. Our proprietary technology, platform and algorithms understand behaviour in high detail.

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Niklas Zennström is CEO and Founding Partner at Atomico. He works daily with founders and sits on the boards of Farmdrop, Lilium, Pipedrive, Oden Technologies and Varjo. Niklas is an experienced technology investor and entrepreneur, having previously co-founded and managed globally successful technology companies including Skype, Kazaa andJoltid. Niklas founded Atomico in 2006. He is passionate about partnering about founders solving big challenges facing their planet with digital technology.In 2007, he co-founded Zennström Philanthropies with his wife, Catherine. They focus their efforts in two areas: human rights and the environment. Niklas also founded the Race for the Baltic, a foundation for a well-managed and sustainable Baltic Sea, one of the most threatened major bodies of water in the world.Niklas is a keen yachtsman and has won four World Championships with his yacht racing team, Rán.Niklas holds dual degrees in Business and MSc Engineering Physics/Computer Science from Uppsala University in Sweden, and he spent his final year at the University of Michigan.

Investment focus

Apps, FinTech, Internet
Series A, Seed, Series B
United Kingdom, Sweden, United States

Portfolio highlights

Audos — Where everyday entrepreneurs build small AI companies
Isometric — Isometric is a carbon removal standard and registry.
Lilium — Lilium is developing sustainable, high-speed air mobility through its electric vertical take-off and landing aircraft, vertiports and digital service.

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