Polymarket's Most Profitable Account Is Sports Prediction Trader "swisstony", Up About $12 Million

October 28: According to a Financial Times analysis, Polymarket's best-performing account is an anonymous sports betting account called "swisstony", which has made $12 million in profit since April 2026. The account uses a high-frequency strategy, building 184,000 positions across 113,112 markets, with cumulative bets of $657 million and an average return per bet of slightly less than 2%. Other accounts in the top 10 profited through a small number of large bets, often exceeding $1 million each.

The FT analysis also found that among users who bet more than $100, 68% lost money, and 4% of them lost their entire principal. Sports betting remains Polymarket's main source of revenue, and crypto price betting has also become an important driver, with wagering volume reaching $5.1 billion during the period. Polymarket said it monitors large positions, paying particular attention to markets with higher manipulation risk, and screens sanctioned wallets and partners with firms such as Chainalysis to monitor markets.