Fun

Fun (fun.xyz) is a payments infrastructure company that moves money on and off blockchains for modern fintech apps. Its rails power deposits, withdrawals, orchestration, and checkout for platforms like Polymarket, Aave, and Lighter - processing more than $18 billion a year. Founded in 2022 by Stanford dropout Alex Fine, the company raised a $72 million Series A in early 2026 led by Multicoin Capital and SignalFire, aiming to be 'the front door' to the new digital economy.