Bubblemaps and '60 Minutes' uncover $2.4M insider trading on Polymarket
Blockchain analysis firm Bubblemaps partnered with CBS's 60 Minutes to publish an exclusive investigation on Monday, May 18, 2026, uncovering nine interconnected accounts that profited a combined $2.4 million through insider trading on Polymarket. The on-chain investigation tied the accounts to U.S.-Iran military conflict markets, where advance knowledge of military developments produced asymmetric returns. Polymarket, a crypto-native prediction market platform, has faced prior scrutiny over market manipulation concerns. This marks the second major media investigation into Polymarket insider trading in under two days, following a New York Times probe into similar patterns across the platform's war and crypto markets.
Polymarket now faces three simultaneous investigations — CBS, NYT, and DOJ — while the Senate weighs mandatory KYC and account-exclusion legislation. Any corroboration of surveillance gaps across these probes could harden bipartisan support for binding federal registration requirements before the House vote.
Brings the number of concurrent insider-trading investigations targeting Polymarket to three — CBS, NYT, and DOJ — as the Senate weighs binding congressional-trading bans and the SDNY tests misappropriation theory in prediction markets for the first time.