Polymarket Paid Adin Ross Multimillion-Dollar Deal Featuring Inside-Trading Content, WSJ Reports

According to a Wall Street Journal investigation published recently, Polymarket struck a multimillion-dollar promotional deal with streamer Adin Ross. In at least 5 of Ross's videos, he identified ways to use inside information to trade on the platform, the outlet found. Polymarket and its marketing contractor Virality promoted at least 19 videos discussing inside information or market-manipulation tactics.

The arrangement drew regulatory scrutiny as Polymarket faces insider-trading concerns. In April 2026, the U.S. Justice Department charged Master Sergeant Gannon Ken Van Dyke with using classified information to win over $400,000 on Polymarket contracts—marking the first federal prosecution of insider trading on a prediction market.