Galaxy Research found that 69.2% of roughly 2.9 million human-paced “retail” accounts on Polymarket’s international platform finished below break-even, with aggregate losses of $338.9 million. The analysis, based on onchain settlement data curated by Stork, showed that 15.2% of accounts did not trade again within 30 days after a loss, versus 6.1% after a win. About 44.1% of traders concentrated more than 60% of their activity in a single topic. Sports specialists made up 47% of specialists but had the lowest profitability rate at 25.1%, while tech and science specialists had the highest at 41.2%, though the sample was smaller. Profitable traders had a median position size of $13.96, versus $10 for unprofitable traders, while holding time showed no clear relationship with profitability.