IOSG Ventures Invests in Fun, Polymarket’s Deposit and Withdrawal Provider

IOSG Ventures has invested in Fun, an infrastructure company that handles Polymarket deposits and withdrawals while linking fiat channels, currencies, assets, wallets and blockchain networks in a single integration.

IOSG did not disclose the investment amount. Fun’s integration supports deposits, withdrawals, cross-chain routing and checkout, and also connects with Lighter and Aave. The company’s annualized funds-processing volume is $100 billion.

Alex Fine founded Fun in 2022. The company completed a $72 million Series A in May 2026, led by Multicoin Capital and SignalFire. Infinity Ventures, Pharsalus Capital and Tinder co-founder Justin Mateen also participated.