Kalshi CEO Tarek Mansour has publicly differentiated Kalshi from Polymarket, describing an âunregulated, offshore prediction marketâ that users confuse with Kalshi. After the FBI raided Polymarket CEO Shayne Coplanâs home in November 2024, Mansour said in December that Kalshi staffers coordinated with influencers to circulate memes mocking Coplan.
Both firms have pending U.S. Patent and Trademark Office applications for âthe worldâs largest prediction market,â and both have announced competing media partnerships and promotional efforts, including temporary grocery giveaways in New York City.
Kalshi pursued federal regulation and operates under Commodity Futures Trading Commission oversight. Polymarket launched without regulator approval and operates its most popular exchange overseas, accessible in the U.S. via VPN. The FBI raid was tied to a Biden-era money-laundering investigation that was later dropped under President Trump, and the Trump administration âcleared the wayâ for Polymarket to open a U.S.-based exchange.
CFTC Chairman Michael Selig has said prediction markets should largely police themselves and has vowed to defend Kalshi in court against states suing under state gambling laws. Donald Trump Jr. advises both companies, and his firm 1789 Capital has invested in Polymarket.