CardNexus announced that it has raised €3.5 million (about $4 million) in funding led by Piton Capital, with participation from Motier Ventures, Financière Saint James, Kima Ventures, OPRTRS CLUB, AQUITI Gestion, and F4 Fund.
The funding comes just three months after the launch of CardNexus’ marketplace. According to the company, the platform has already attracted more than 50,000 users, is growing at 42% month-over-month, has inventoried over 30 million cards, and includes sellers across 30 countries.
CardNexus is developing a mobile-native platform that allows collectors to manage, value, and trade collections across multiple trading card games. The app currently supports more than 12 games and plans to expand to 20 by the end of the year.
The company said more than 10 million cards have already been scanned using its real-time, on-device AI scanner. It also plans to launch a public API next month to enable developers and local game shops to build applications and services on top of the platform.
CEO Tristan Foureur previously co-founded elevator maintenance company WeMaintain, which expanded from three employees to 300 people across four countries. He is building CardNexus alongside Gaultier Romon, a trading card game seller and player for 25 years, and Julie Le Soymier.
Foureur noted that the trading card market continues to expand rapidly. Professional Sports Authenticator graded 19 million cards in 2025, while new games continue to bring millions of collectors into the market each year.
