Kalshi Adds Employer Disclosure Rule After Insider Trading Charges Hit Rival

Published by James Harris on June 9, 2026June 9, 2026

Kalshi will begin requiring some traders to disclose their employers before speculating on markets tied to corporate earnings, product launches, and national security outcomes, a direct response to its own surveillance committee finding that the platform could only detect insider trading after the fact, not before it.

The timing is not coincidental. Federal prosecutors have now charged two individuals connected to Polymarket, a U.S.-excluded rival, with using nonpublic information to generate profits: a U.S. Army soldier allegedly trading on classified intelligence about a Venezuelan government operation, and a Google employee who reportedly used confidential search trend data to clear roughly $1.2 million. Those cases have handed regulators a concrete argument that prediction markets carry insider trading risk that existing frameworks were not built to catch. Kalshi, which operates under CFTC oversight as a designated contract market, is clearly moving to preempt the same scrutiny rather than absorb it. The Wall Street Journal first reported the employer-disclosure requirement.

The employment data will not be verified proactively in most cases. It will be requested only after suspicious activity triggers an investigation, which means the deterrence function depends almost entirely on whether traders believe the threat of verification is credible.

That distinction matters for the broader prediction market sector. Kalshi’s compliance posture, including over 20 referrals to regulators and law enforcement in the first quarter of 2026 alone, one of which targeted former Representative George Santos over trading tied to a Trump State of the Union market, signals that the platform is positioning itself as a cooperative actor with regulators at a moment when the industry’s legal standing in the U.S. is still being defined. Polymarket’s 2022 CFTC settlement effectively pushed it offshore; Kalshi’s path has been the opposite, seeking legitimacy through regulatory engagement. How aggressively the CFTC responds to the Polymarket prosecutions will likely determine how much further Kalshi and any future domestic entrants are pushed to tighten surveillance infrastructure.

Congress is still debating whether prediction markets can adequately self-police insider trading risk, and the outcome of the pending federal cases against the Polymarket traders will almost certainly shape that conversation before any new legislative framework does.