An angel investor and operator angel based in Cologne, North Rhine-Westphalia, Germany, Kai Buehler has 4 known investments: Honey, Fakespot, KarmaKarma and VIRE GmbH.
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Investment focus
Contacts
Kai Buehler portfolio companies (4)
- Honey
- Fakespot
- KarmaKarma
- VIRE GmbH
Affiliated funds' portfolios
Founding Investor & Advisor at World Fund, whose known portfolio counts 12 companies
- Mythical Games
- Space Forge
- Planet A Foods
- Anaphite
- NetZeroNitrogen
- Nitricity
- Eightco Holdings
- Aedifion
- Freshflow
- Hyperscale Power
- Vaeridion
- Enerkii
Investor Profile
The listing covers sectors Commerce, Consumer and Education, and focus areas E-Commerce, EdTech, Marketing Tech and Media. Startups operating in these areas may find Kai Buehler relevant.
Stage-wise, the known deals cluster around Pre-Seed and Seed rounds.
The portfolio and focus above give founders context on whether Kai Buehler matches their raise.
Colleagues at World Fund
Tim Schumacher
General Partner
Cologne, Germany
Heiko Rauch
Founding Investor
Berlin, Germany
Craig Douglas
Founding Partner
Netherlands
Matthias Koeppe
Limited Partner
Cologne, Germany
Daniel Valenzuela
Venture Partner
Cologne, Germany
Mark Windeknecht
Principal
Munich, Germany
Danijel Višević
General Partner and Co-Founder World Fund
Berlin, Germany
Robin Neff
Investor
Munich, Germany
Daria Saharova
Founding Partner
Germany
Rahul Tomar
Investor
Cologne, Germany
Meryem Cherif
Venture Capital, Impact
London, United Kingdom
Edwin Toh
Worldcoin Investor
Singapore
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Frequently asked questions
Who is Kai Buehler?
Kai Buehler is an angel investor and operator angel based in Cologne, North Rhine-Westphalia, Germany with 4 known investments on file, among them Honey, Fakespot and KarmaKarma. The sections above list the sectors, stages and firms attached to that record.
What does Kai Buehler invest in?
Listed sectors include Commerce, Consumer and Education; listed focus areas include E-Commerce, EdTech, Marketing Tech and Media. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Kai Buehler invest at?
The known deals of Kai Buehler include Pre-Seed and Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Kai Buehler listed at?
Kai Buehler is listed as Founding Investor & Advisor at World Fund. 12 other people in the database share a firm with Kai Buehler.
How do I contact Kai Buehler?
An email address, a phone number and a LinkedIn page are on file for Kai Buehler. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal