Prediction market platform Kalshi launched more than 150 insider-trading investigations in the first three months of 2026, the company confirmed Tuesday. Automated screening tools stopped over 100 potentially illegal trades before they could execute, and at least 20 cases were passed to law enforcement.
Automated screening catches suspicious bets
Kalshi’s compliance system flagged unusual trading patterns linked to employees at companies tied to upcoming market events. The platform uses algorithms that scan for trades placed just before major announcements or contract settlements — a pattern consistent with insider trading.
The 100-plus blocked trades represent transactions the system identified as suspect and halted in real time. Investigators then reviewed each case, opening formal probes into more than 150 distinct incidents during the quarter.
Referrals to federal authorities
At least 20 of those investigations were serious enough that Kalshi handed them over to law enforcement. The company did not name which agencies received the referrals, but such cases typically go to the FBI or the Commodity Futures Trading Commission, which regulates prediction markets.
The referrals mark an escalation in Kalshi’s enforcement efforts. The platform has faced scrutiny over the past year about how it polices trades that may rely on non-public information.
Employer checks for high-risk markets
Kalshi also rolled out a new layer of protection: employer verification for users entering markets deemed high risk. The company now checks whether a trader works for an organization whose internal data could give them an edge in a specific contract.
If the system detects a match, it blocks that user from trading on that market. The measure is designed to prevent situations where, for example, an employee of a drugmaker bets on a contract tied to their own company’s clinical trial results.
“We’re trying to stay ahead of the problem,” said a Kalshi compliance official in a statement. “If someone has material non-public information, they don’t belong in that market.”
How the numbers stack up
The quarterly totals are the first public breakdown Kalshi has released since it started expanding its compliance team last year. The platform handles millions of trades each quarter, so the blocked and investigated trades represent a small fraction of overall activity. But the referral count suggests regulators are paying closer attention.
Prediction markets operate in a regulatory gray area, and insider-trading rules are still being tested in court. The CFTC has not yet brought a public enforcement action against a trader on Kalshi, though that could change as more cases land on investigators’ desks.
For now, the 20 referred cases are in the hands of law enforcement. It is unclear how many will lead to charges or whether any will set legal precedents for what constitutes insider trading on a prediction market.
