A Galaxy Research study has revealed that a substantial majority of retail traders on the prediction market platform Polymarket have experienced financial losses, with aggregate losses reaching $338.9 million. This financial downturn for users coincides with an increasing number of legal actions being filed against Polymarket in the United States and South Korea, signaling growing regulatory scrutiny for the prediction market industry.
According to the Galaxy Research study, which analyzed 2.9 million human-paced accounts on Polymarket’s international platform, over 69% of retail traders finished below break-even. The study excluded accounts likely driven by automation, defined as those averaging more than 50 orders per active trading day. These automated accounts represented a small fraction of wallets (4.1%) but accounted for a significant majority of all orders (80.8%). Among the remaining accounts analyzed as likely retail, the median loss was approximately $3.
The research also indicated behavioral patterns associated with trading outcomes. Accounts that experienced losses were more likely to cease trading within 30 days compared to those that ended profitably (15.2% vs. 6.1%). Approximately 44% of traders focused more than 60% of their activity on a single topic. Specialists in these focused areas showed a slightly lower profitability rate (28%) compared to generalists (30.4%). Notably, traders specializing in tech and science demonstrated a higher profitability rate of 41.2%, while sports specialists had the lowest profitability.
It is important to note that the Galaxy Research analysis tracked wallet addresses rather than individual people, meaning a single user employing multiple wallets could appear as several distinct accounts. The study also focused exclusively on Polymarket’s international platform, not its separate US exchange.
In parallel with the study’s findings on trader performance, Polymarket is facing mounting legal and regulatory pressure. In August, the city of Baltimore sued Polymarket and Kalshi, alleging that both platforms were operating as unlicensed sports betting operations in Maryland. New York initiated legal action in September against Polymarket’s US arm, citing allegations of unlicensed gambling and the platform’s allowance of users aged 18 to 20 to trade, despite the state’s 21-year minimum age for mobile sports betting.
The legal challenges extend beyond the US. South Korean police have opened cases against 26 Polymarket users and referred 18 individuals to prosecutors. These cases involve approximately $12.7 million in bets, with authorities examining whether the trading activities constitute illegal gambling under Korean law.
These developments highlight a critical juncture for prediction market platforms like Polymarket. The significant financial losses experienced by a large portion of their user base, coupled with increasing legal actions from various jurisdictions, suggest a heightened level of regulatory scrutiny. The core uncertainties remain regarding the precise number of individual users affected, the definitive reasons behind varying trader profitability, and the ultimate legal classification of prediction market activities in different regulatory environments. The long-term implications of these legal challenges on the future operations and expansion of Polymarket and similar platforms are yet to be determined.
Why This Matters
The findings from Galaxy Research underscore the substantial financial risks faced by retail traders on prediction market platforms like Polymarket. The platform’s aggregate losses of $338.9 million and the high percentage of unprofitable traders (over 69%) indicate a challenging environment for individual participants. This is occurring concurrently with significant legal actions in the US and South Korea, suggesting a broader trend of regulatory bodies examining the operational and legal frameworks of prediction markets, particularly concerning allegations of unlicensed gambling and user protection.
Broader Context
Polymarket operates as a prediction market platform, a type of venue where users can trade contracts based on the outcome of future events. The study by Galaxy Research analyzed trading activity on Polymarket’s international platform, excluding automated accounts to focus on human-paced trading. The legal challenges, including lawsuits from Baltimore and New York, and investigations in South Korea, reflect a growing global trend of regulatory bodies scrutinizing such platforms, often classifying their activities as potential forms of gambling.



