A Bloomberg report reveals that nine whale wallets have dominated the dispute adjudication process on Polymarket, a decentralized prediction market platform. These wallets, holding significant UMA voting power, have influenced nearly all dispute outcomes over the past three years. Despite over 6,400 addresses participating, these nine wallets contributed about half of the voting power. In April 2026, around 230 contracts, with a trading volume exceeding $1 billion, entered the dispute process, highlighting an increase in disputes correlating with trading volume. Critics argue that this concentration of power allows anonymous whales to make decisions based on economic interests, while plans to reform the process have been postponed.