Kalshi introduced new measures aimed at combating insider trading, requiring some traders to provide employment details. These measures took effect on June 9-10, 2026, targeting markets considered at heightened risk of insider trading or manipulation, such as those related to national security or corporate performance [1, 2, 3].
The company has implemented a risk scoring system to evaluate markets for insider trading risks. Employment verification is required when risk scores pass certain thresholds. Kalshi also strengthened whistleblower features, allowing around-the-clock reporting of abusive trading and routing tips through internal alert controls to their surveillance team [1, 2].
Kalshi's screening tools stopped over 100 possible insider trading incidents in the first quarter of 2026 alone [1]. The company sanctioned three U.S. political candidates for betting on their own campaigns in April 2026 and referred former Congressman George Santos to authorities over suspicious wagers [2, 3].
This crackdown follows recent high-profile insider trading charges involving other prediction markets, including a Google software engineer and a U.S. special forces soldier betting on outcomes [1, 2]. To oversee integrity efforts, Kalshi established an Independent Surveillance Audit Committee in February 2026 [2].
Kalshi plans to verify employment data especially where suspicious trading is detected, as part of broader anti-insider trading protocols [3]. Robert DeNault, Kalshi's Head of Enforcement, said, "By implementing these new integrity measures, we continue to lead the industry on the issue of market integrity amongst federally regulated prediction markets" [1, 2].
The new rules apply immediately across relevant markets starting June 9-10, 2026, as Kalshi expands its efforts to enforce compliance and market integrity in the prediction market sector [1, 2].
