The Polymarket disputed contract ruling was dominated by a few whale, with nine addresses contributing approximately half of the UMA voting power.

According to ME News, on May 26 (UTC+8), the adjudication of disputed contracts on Polymarket is being dominated by a small number of UMA holders. Statistics show that of the more than 6,400 addresses that participated in Polymarket dispute adjudication votes over the past three years, just nine whale addresses contributed about half of the UMA voting power and were on the winning side in almost all disputes. In April 2026, approximately 230 contracts with a total trading volume exceeding $1 billion entered the dispute adjudication process, representing less than 1% of all Polymarket contracts, but the frequency of disputes increased with the trading volume. Some traders criticized the mechanism for effectively giving anonymous whale a "fact-based decision-making power" driven by economic interests, and Polymarket and Risk Labs, which is responsible for UMA, have shelved their original plans to improve the relevant processes. (Source: ME)