Whale Wallets Raise Insider Trading Doubts on Polymarket After Axiom Probe

Over $1.2 million in profits pocketed by a group of crypto wallets tied to an onchain investigation into decentralized finance platform Axiom has reignited concerns over possible insider trading in prediction markets. Suspicious trading patterns have thrown a spotlight on the vulnerabilities of blockchain-based betting platforms when it comes to the use of nonpublic information.

According to blockchain researcher Defioasis, analysis of Polymarket—an influential prediction market—identified that eight of the ten most profitable wallets could have benefited from insider knowledge. Researchers highlighted three wallets in particular that exclusively traded on this single market, each making over $100,000. The lack of prior trading activity elsewhere only deepens suspicions that these addresses might have had privileged access, possibly tipping the scales in their favor.

The controversial Polymarket contract became the focus of a far-reaching investigation announced by blockchain detective ZachXBT. This inquiry centered on allegations that Broox Bauer, a staff member at Axiom, and several associates had traded using confidential information.