A new research report claims that a small group of “informed” traders on Polymarket have extracted $143 million in abnormal profits since 2024, raising fresh questions about fairness and information asymmetry on the leading blockchain-based prediction market platform.
$143 Million in Abnormal Profits: What the Research Found
The study, reported by Odaily, found that traders with apparent information advantages earned $143 million in returns that exceed what an efficient market would predict. In financial research, “abnormal profits” refers to gains above and beyond what normal risk-adjusted returns would produce.
The finding covers Polymarket activity since 2024, a period during which the platform saw explosive growth driven largely by betting markets tied to the U.S. presidential election cycle.
The term “informed traders” in this context does not necessarily imply illegal activity. It describes participants who consistently trade with an apparent edge, whether from superior analysis, faster access to public information, or early knowledge of outcomes.
A Pattern of Concentrated Gains and Retail Losses
This research adds to a growing body of evidence suggesting that Polymarket’s gains are concentrated among a small elite. Separate reporting found that 70% of Polymarket traders lost money, with the top fraction of accounts capturing most of the platform’s profits.
A Columbia University study previously estimated that 25% of Polymarket trades are inflated, suggesting that a portion of platform activity may not reflect genuine forecasting demand.
Concerns about bot-like activity have also surfaced. DL News reported that Polymarket users lost millions to bot-like bettors over the past year, pointing to automated strategies that may exploit slower retail participants.
In a separate incident, CoinDesk reported apparent insider trading on a Polymarket market that was itself designed to detect insider trading, highlighting the difficulty of policing information asymmetry on decentralized platforms.
What Informed Trading Means for Prediction Market Reliability
Polymarket became a widely cited forecasting tool during the 2024 U.S. election, with media outlets and analysts referencing its odds as a proxy for real-time political sentiment. If a small group of informed traders systematically extracts value from less-informed participants, the platform’s prices may still be accurate, but the cost of that accuracy falls disproportionately on retail bettors.
The question is whether the losses absorbed by retail participants function as a necessary subsidy for accurate pricing, or whether the scale of informed trader profits signals a market where ordinary users are structurally disadvantaged. In traditional finance, informed trading exists in equity markets too, but regulatory frameworks impose disclosure requirements and insider trading laws to limit the asymmetry.
All Polymarket trades settle on-chain, which is what made this academic research possible in the first place. The transparency of blockchain-based markets means that wallet-level analysis can identify patterns that would be invisible on traditional betting platforms. This on-chain auditability is a strength unique to crypto-native prediction markets.
Broader Scrutiny of Prediction Markets Is Intensifying
The scrutiny arrives as prediction markets face broader regulatory attention. CNN recently reported on geopolitical event betting on prediction platforms, a category that has drawn concern from policymakers about the ethics of wagering on conflict outcomes.
For crypto market participants already navigating volatility in traditional digital assets, where Ethereum spot ETF outflows recently hit $48.5 million in a sustained streak, the Polymarket findings underscore a recurring theme: sophisticated players often hold structural advantages over retail in emerging markets.
The growing regulatory focus on digital asset platforms, including legal challenges to major exchanges like Coinbase, suggests that prediction markets may face similar scrutiny as their volumes grow. Meanwhile, retail interest continues to flow into speculative crypto products, from meme token subscription offerings to leveraged trading, underscoring the gap between retail appetite and the structural edges available to sophisticated participants.
Whether Polymarket will take steps to address the information asymmetry that researchers have identified remains an open question for the platform and its growing user base.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.
Source: https://coincu.com/analysis/polymarket-informed-traders-143-million-abnormal-profits-research/