Rep. James Comer, R-Ky., chair of the Home Oversight and Authorities Reform Committee, introduced Friday on CNBC’s “Squawk Field” that he’s in search of info from the CEOs of Kalshi and Polymarket on their efforts to stop insider buying and selling on their platforms.
Comer’s probe is the newest in a sequence of congressional makes an attempt to rein within the platforms.
“Inside information held by prediction market platforms are the one means by which dangerous actors will be recognized and to find out whether or not platforms are assembly their authorized obligations,” Comer wrote in a letter despatched Friday to Polymarket CEO Shayne Coplan and seen by CNBC. An identical letter, additionally seen by CNBC, was despatched Friday to Kalshi CEO Tarek Mansour.
“Subsequently, the Committee requests paperwork and knowledge to raised perceive how Polymarket implements id verification for home and worldwide account holders, enforces geographic restrictions, and detects anomalous buying and selling exercise to stop insider buying and selling throughout its international platform,” Comer’s letter continues.
Elisabeth Diana, Kalshi’s head of communications, mentioned in a press release that they “sit up for participating with the Committee and its members concerning the methods and processes that we’ve spent years constructing.”
“As a US-regulated change we’re happy with our complete protections towards insider buying and selling,” Diana mentioned.
A spokesperson for Polymarket mentioned in an emailed assertion the corporate “maintains a complete market integrity framework. We sit up for participating with Chairman Comer and the committee on how our platform is a pioneer in transparency.”
Consultant James Comer, a Republican from Kentucky and chairman of the Home Oversight and Accountability Committee, speaks to members of the media previous to a closed-door deposition with Commerce Secretary Howard Lutnick, not pictured, in Washington, DC, US, on Wednesday, Could 6, 2026.
Al Drago | Bloomberg | Getty Photos
Prediction markets like Kalshi and Polymarket have exploded in reputation and drawn growing scrutiny from federal and state lawmakers and regulators. They permit customers to put bets on the result of particular occasions in a wide range of areas, together with sports activities video games, elections, awards exhibits and authorities actions.
After a sequence of extremely publicized bets on world and political occasions, Comer, in his look on CNBC, mentioned “there is a concern now that members of Congress, members of the president’s administration, any kind of presidency worker, can use fundamental insider information and make enormous earnings on something authorities associated.”
“So we need to not solely launch an investigation to see how widespread this has been to date, but in addition to show a case that we have to cross some kind of laws,” Comer mentioned. “And I believe it would not be an excessive amount of to ask to say members of Congress cannot take part within the predictions market, nor can authorities staff or folks within the president’s administration.”
Kalshi is headquartered in New York Metropolis and is regulated by the Commodity Futures Buying and selling Fee. It doesn’t enable customers to put bets anonymously, a contentious function of another platforms, together with Polymarket, that function exterior the U.S.
Whereas Polymarket additionally has workplaces within the U.S., it is a blockchain-based platform run by an entity licensed in Panama. It has a restricted U.S. product regulated by the CFTC, however its worldwide operations aren’t overseen by U.S. regulators.
Each firms earlier this yr introduced they have been strengthening their very own guidelines on inner insider buying and selling after an array of doubtful trades have been made public.
Final month, a U.S. soldier was arrested for allegedly utilizing inside info to put bets on Polymarket concerning the ouster of former Venezuelan chief Nicolás Maduro in January, netting roughly $400,000.
And greater than 80 Polymarket customers have made bets with suspicious traits, together with trades positioned hours earlier than U.S. and Israeli strikes in Iran, in keeping with a current New York Instances investigation.
“The fast progress and mainstreaming of this platform, the cryptocurrency infrastructure, and the anonymity it affords customers could have created unintended structural circumstances that dangerous actors — particularly people with nationwide safety clearances — can exploit,” Comer wrote to Coplan.
Kalshi, in the meantime, says it doesn’t enable occasion contracts associated to conflict or dying. However a number of political candidates have been caught betting on their very own races on the platform. In April, Kalshi suspended three congressional candidates who wagered on their very own candidacies. Comer cited these bets in his letter to Kalshi in addition to the corporate’s enlargement into greater than 140 international locations.
“The fast international enlargement of Kalshi’s platform raises questions on whether or not internationally positioned occasion contracts are topic to equal id verification and insider buying and selling prohibitions as home occasion contracts,” Comer wrote.
Bipartisan members of Congress have launched a flurry of payments this Congress to rein in prediction markets. A number of deal particularly with the difficulty of insider buying and selling, whereas others are broader and search to root out different exercise on the platform, together with sports activities betting.
Comer’s probe follows a letter from seven Democratic lawmakers, led by Rep. Chris Pappas of New Hampshire, that referred to as on the Oversight Committee chair to subpoena the platforms.
“The American public has a professional curiosity in understanding whether or not people entrusted with categorized nationwide safety info have used that entry for private monetary achieve,” the Democratic lawmakers wrote on Could 11. “A committee investigation, enforced with subpoenas, will embody inner information, that are the one means by which the people who carried out these trades will be recognized and the query of whether or not these platforms are upholding their tasks will be answered.”
In his letters, Comer requested paperwork and communications from each CEOs on how every firm verifies identities, enforces geographic restrictions and detects uncommon trades. Comer requested for all info transmitted by June 5.
Disclosure: CNBC and Kalshi have a industrial relationship that features buyer acquisition and a minority funding.
