Galaxy Research found that 69.2% of retail Polymarket accounts finished below break-even in a study of 2.9 million wallets. Those losing accounts were down a combined $338.9 million. The study covers Polymarket's international platform, not its separate US app. Within 30 days of a loss, 15.2% of accounts had not traded again, compared with 6.1% after a win. Galaxy cautioned that some apparent quitters may have moved to new wallets.