Polymarket Partners with Chainalysis for Real-Time Surveillance Amid Insider Trading Concerns

Apr 30, 2026

Polymarket has partnered with blockchain analytics firm Chainalysis to monitor its platform in real-time for insider trading and market manipulation as it seeks a $15 billion valuation through a $400 million fundraising round and pursues CFTC approval to reenter the U.S. market. The move comes after the DOJ arrested a U.S. Army soldier last week for allegedly using confidential information to place bets on Polymarket, and follows Polymarket's 2022 settlement with the CFTC for offering illicit binary options contracts. An academic study analyzing all Polymarket transactions from 2023-2025 found that just 3.14% of accounts qualified as skilled winners who captured over 30% of gains, suggesting the platform's accuracy reflects an informed minority rather than crowd wisdom. Both Polymarket and competitor Kalshi are addressing insider trading concerns while aggressively pursuing market dominance amid growing trading volumes across sports, politics, economics, and cultural events.

Polymarket's Partnership with Chainalysis for Market Surveillance

▪Polymarket calls itself the world's largest prediction market.
▪Polymarket's partnership with Chainalysis includes using Chainalysis' investigative tools to produce blockchain-verified evidence for proactive and reactive engagement with law enforcement and regulatory inquiries.
▪Polymarket founder and CEO Shayne Coplan stated that Polymarket was built on-chain because transparency matters.
▪Polymarket enlisted blockchain data firm Chainalysis to help police insider trading and all types of fraud and market manipulation on its platform.

Polymarket's Fundraising and U.S. Market Re-entry Efforts

▪Polymarket launched a U.S. version of its platform after acquiring derivatives exchange QCEX last year.
▪Polymarket seeks to raise $400 million at a $15 billion valuation according to a report from The Information.
▪Polymarket is pushing to reenter the U.S. market pending approval from the Commodity Futures Trading Commission.
▪Polymarket settled with the CFTC in 2022 for allegedly offering illicit binary options contracts.

Insider Trading Concerns and Platform Integrity Issues

▪An informed minority of Polymarket users together with market makers captured more than 30% of all gains while making up under 3.5% of accounts.
▪Both Polymarket and Kalshi have attempted to address concerns about insider trading on their platforms as both companies aggressively pursue multi-billion dollar valuations and market dominance.
▪According to an academic study, 3.14% of Polymarket accounts qualified as skilled winners whose order flow consistently predicted both short-term price moves and final outcomes.
▪An academic paper analyzing every Polymarket transaction from 2023 through 2025 concluded that Polymarket's accuracy reflects the wisdom of an informed minority, not the wisdom of the crowd.
▪Trading volumes on Polymarket and Kalshi have been growing as consumers embrace opportunities to wager on outcomes of sports, politics, economics, pop culture, and weather events.
▪The Department of Justice arrested an active-duty U.S. Army soldier last week for allegedly using confidential information to place bets on Polymarket ahead of former Venezuelan President Nicolás Maduro's capture earlier this year.

Perspective of Polymarket

▪Polymarket founder and CEO Shayne Coplan stated that Polymarket was built on-chain because transparency matters.
▪Polymarket's use of Chainalysis investigative tools enables proactive and reactive engagement with law enforcement and regulatory inquiries.