Comer launches – House Oversight Chairman James Comer says he is investigating whether members of Congress, administration officials or other government employees could use nonpublic information to profit from prediction markets tied to real-world events. The probe targets Kal
House Oversight Chairman James Comer didn’t wait long to turn suspicion into paperwork.
On Friday. the Kentucky Republican announced he is launching an investigation into possible insider trading involving the prediction platforms Kalshi and Polymarket—markets where users can place financial bets on outcomes ranging from elections and government actions to economic data and sporting events. Comer’s central concern is simple and hard to ignore: if someone inside government has access to nonpublic information. they could profit from it before the public ever learns what’s coming.
Comer said he wants safeguards from both companies. arguing that the answer may come down to documents and internal records that can help identify potential “bad actors” on the platforms. In his view. Congress and the executive branch should not mix with markets that are built to react instantly to real-world developments.
The investigation asks for details on what safeguards are in place to prevent insider trading. including how accounts are verified. how trading activity is monitored. and what fraud detection measures exist. Comer’s push isn’t abstract—he is seeking information tied to the mechanics of the platforms. not just public-facing explanations.
CNBC reported that Comer sent letters to Polymarket CEO Shayne Coplan and Kalshi CEO Tarek Mansour seeking documents related to account verification. trading activity monitoring. and fraud detection measures. In his letter to Coplan. Comer reportedly argued that internal records may be the only way to identify potential “bad actors” on the platform.
Comer framed the issue around the access insiders may have. He said his concern is that members of Congress. administration officials or government employees with access to nonpublic information could use that knowledge to profit from market activity tied to government events. He also said the scope of the issue could be larger than a single incident—part of what he wants to determine is whether potential insider trading is widespread and whether new legislation is needed.
“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,” Comer said.
That argument lands in a political environment already strained by the question of who knew what, and when.
Comer’s investigation follows a Justice Department case announced last month. Prosecutors charged an American soldier. Gannon Ken Van Dyke. with using confidential information tied to a planned operation involving Venezuelan President Nicolas Maduro. In the indictment. prosecutors allege Van Dyke used advance knowledge of the operation to place bets on Polymarket and made roughly $400. 000.
Van Dyke has pleaded not guilty to charges that include unlawful use of confidential government information, commodities fraud and wire fraud.
For Comer, the Justice Department case provides a concrete starting point—but he is aiming to determine how far the problem reaches beyond one defendant. He said he wants to establish how widespread potential insider trading may be and whether legislation is needed.
The debate has also pulled in lawmakers from both parties. Seven Democratic lawmakers previously urged Comer to subpoena prediction market operators over what they described as “apparent corruption and insider trading” concerns. Their pressure suggests this is not just a partisan fight about markets—it’s about trust in government and the rules that separate public service from private gain.
Additional reporting has kept the spotlight on timing and suspicious activity. Recent reporting from The New York Times found that more than 80 users made suspicious trades shortly before U.S. and Israeli strikes against Iran.
Kalshi, headquartered in New York, is regulated by the Commodity Futures Trading Commission. The company does not allow event contracts tied to war or death. Kalshi has also previously suspended three congressional candidates who traded on their own races.
Polymarket is licensed in Panama and also maintains U.S. offices.
Comer’s investigation now puts the focus back on the platforms’ internal guardrails—what they check for, what they catch, and what they do when government events move markets before the public can fully react.
James Comer House Oversight Committee insider trading Kalshi Polymarket prediction markets Commodity Futures Trading Commission Polymarket Panama license congressional ethics Gannon Ken Van Dyke Justice Department Nicolas Maduro Venezuelan operation wire fraud commodities fraud account verification fraud detection trading activity monitoring
Prediction markets are basically gambling, so why are we acting surprised?
So basically if someone knows something early they could bet on it… okay, but how is this different from Wall Street? Just feels like politics tbh. I didn’t even know these sites were connected to Congress stuff.
Wait I thought Kalshi/Polymarket were just like sports betting but for the news? If they’re looking at “insider trading” then does that mean politicians were actually on the platform making plays? I’m not saying it’s impossible but isn’t the whole point that it’s based on events already known? Idk this is messy.
Comer “launches inquiry” like that automatically means someone did something. Meanwhile these prediction markets probably move way faster than any normal investigation. Also the article says account verification and monitoring—so like… are they mad people can make accounts at all? Seems like they want a paper trail so they can accuse someone later. I don’t even fully get it.