The U.S. House Oversight Committee is investigating prominent prediction markets, Polymarket and Kalshi, amid concerns that government employees might be leveraging classified information for personal financial gain.
Chairman James Comer, representing Kentucky, is requesting internal documentation from the CEOs of both platforms to assess whether insiders are profiting from geopolitical and policy-related events. He stated on CNBC’s Squawk Box, “There’s a concern now that members of Congress, members of the president’s administration, any type of government employee, can use basic insider knowledge and make huge profits on anything government-related.”
Comer emphasized the need for a thorough investigation to determine the extent of this practice and indicated that legislative measures might be necessary to prevent Congress members and government officials from engaging in prediction markets. “I think it wouldn’t be too much to ask to say members of Congress can’t participate in the predictions market, nor can government employees or people in the president’s administration,” he added.
This inquiry comes at a time when prediction markets are gaining traction, prompting bipartisan scrutiny from lawmakers who are increasingly wary of potential insider trading and the associated risks to national security. In correspondence sent on Friday to Polymarket's Shayne Coplan and Kalshi's Tarek Mansour, Comer sought clarification on how these platforms manage identity verification, enforce geographical restrictions, and monitor unusual trading patterns.
As prediction markets have surged in popularity, concerns have been raised regarding their vulnerability to exploitation by individuals with national security clearance. A report from Wall Street broker Bernstein predicts that market volumes could reach approximately $1 trillion by 2030, evolving from specialized betting into comprehensive information markets encompassing various sectors, including sports and politics. Last year, volumes reached $51 billion and are projected to rise to around $240 billion by 2026.
This investigation follows a contentious Senate Commerce Committee hearing where lawmakers scrutinized prediction market firms like Kalshi and Crypto.com. Senate Commerce Chair Ted Cruz criticized the industry, highlighting its potential to facilitate cheating in sports, while Senator John Hickenlooper expressed concern over aggressive marketing tactics that could encourage gambling among youth.
Nicolas Vaiman, co-founder and CEO of Bubblemaps, voiced serious concerns regarding the national security implications of insider trading in prediction markets, noting that irregular trading patterns observed could be exploited by adversaries of the United States. He pointed out an alarming statistic of 80 bets with a 98% success rate on Polymarket, which he deemed statistically improbable, stating, “Not even luck can explain those wins.”