Kalshi now requires users to reveal employers as it fights insider trading and market manipulation

Summary

Kalshi will require some traders to disclose their employers on higher-risk markets as part of a tougher anti-insider-trading and anti-manipulation program. The policy takes effect immediately and may include screening before trading is allowed. Kalshi said the change follows recommendations from its independent Surveillance Audit Committee and is meant to identify users with access to material nonpublic information. The exchange also introduced a risk-scoring system that rates markets by insider-trading risk, market importance, regulatory concerns, and national-security implications; high-risk markets may face tighter limits or be rejected. New whistleblower tools let users report suspicious activity from within each market. Kalshi said it blocked more than 100 potential insider trades in Q1, opened more than 150 investigations, referred more than 20 cases to law enforcement, and issued five disciplinary actions. The move comes amid growing scrutiny of prediction markets after high-profile insider-trading arrests on Polymarket.