Recent findings indicate that a small cluster of traders may be dictating the direction of prediction markets, but an even smaller subset is accumulating the lion's share of the profits. A report by blockchain analytics firm Solidus Labs has uncovered extreme profit concentration on Polymarket, where less than 1% of wallets are capturing roughly half of all gains in key markets. The report's analysis of Polymarket's politics markets between December 2025 and February 2026 reveals that a mere 0.55% of profitable maker wallets and 0.26% of winning taker wallets accounted for approximately 50% of gains, translating to around $8 million out of $16 million in profits.

These findings are consistent with existing academic research, which suggests that a small minority of traders drives most price discovery, with a previous study by the London Business School and Yale indicating that about 3% of Polymarket traders are responsible for this phenomenon. The disparity between the concentration of profits and the broader base of participants underscores the point that such concentration does not necessarily imply wrongdoing, but rather that some traders possess significant advantages, including greater sophistication, better capitalization, or faster access to information. According to the report, the participants capturing a disproportionate share of profits are operating in a distinctly different league, leveraging capital depth, infrastructure, and execution strategies that are beyond the reach of most users. The study also identifies signs of wash trading, with approximately 15% of volume in some markets exhibiting patterns consistent with self-trading or economically neutral positions, which can be achieved by buying YES on both sides of a binary prediction market within the same time window, resulting in economically delta-neutral positions.

Solidus notes that this type of trade has no equivalent in traditional finance and may be driven by incentive farming rather than pure manipulation, potentially in anticipation of Polymarket's forthcoming POLY airdrop, which is speculated to factor in trading volume as a metric for token allocation. As the firm behind the report, Solidus sells the HALO surveillance platform, whose output the report relies on, and has recently partnered with Kalshi, Polymarket's largest U.S.-regulated competitor, to deploy the platform across over 4,000 markets.

While the data is verifiable and on-chain, the framing of the report should be considered in the context of Solidus' sales pitch for its surveillance infrastructure, highlighting the need for such tools in prediction markets.