A profile of Checkout.com founder and CEO Guillaume Pousaz, who owns 60% of the $40B London-based payments company and has begun investing in fintech startups
A college dropout from Switzerland has amassed a $14 billion fortune to become one of the country's richest people by creating a rising star in electronic payments. Tweets: @ivanlevingston . Thanks: @ivanlevingston Tweets: Ivan Levingston / @ivanlevingston : NEW: Here is the story of Europe's most valuable startup Checkout and it's dropout-turned-billionaire founder Including: -Pornhub's owner MindGeek -OnlyFans -Crypto -Exec departures -Surfing -a journey from Switz-Cali-Mauritius-Singapore- London https://www.bloomberg.com/... Thanks: @ivanlevingston
Context & Ripple Effects
Pousaz's profile lands at the top of Checkout.com's valuation arc: a $150M Series B led by Coatue at $5.5B in 2020, a $15B round led by Tiger Global in early 2021, then a $1B share sale at a $40B valuation in January 2022 — making it Europe's most valuable startup. With 60% ownership, his $14B fortune is essentially a levered position on those private marks.
The profile also documents where that money is going next: Pousaz has begun writing his own checks into fintech startups, joining Revolut's Nikolay Storonsky — whose Musk-style pay packages pushed his fortune to roughly $20B — in the ranks of UK founder-billionaires whose wealth and dealmaking now sit outside the traditional VC circuit.
First-order effects
- Pousaz's $14B net worth is almost entirely illiquid paper tied to Checkout.com's last investor mark, so any repricing of the company moves his fortune directly.
- His entry into startup investing adds a new source of founder capital to the fintech funding market, available without fund structures or LP gates.
Second-order effects
- Early-stage fintech founders gain an alternative to institutional seed money, shifting some pricing power over deals toward operators who have already built at scale.
- Rival Revolut's Storonsky faces a comparable dynamic: both companies' founder fortunes are hostage to private valuations, raising the stakes on each firm's path to liquidity.
Third-order effects
- If private marks keep resetting — Checkout.com's internal valuation was later slashed to roughly $11B per the related coverage — founder fortunes built on peak-2021 rounds face the same markdowns, testing whether founder billionaires are durable or cyclical.
- Supermajority founder ownership concentrates exit timing, strategy, and now ecosystem capital allocation in one person, a governance structure increasingly distinct from the VC-governed model that funded the previous generation.
The trend: European fintech is minting founder-billionaires whose wealth, governance control, and recycled capital ride on private valuations they largely set themselves.