Kalshi and Polymarket ban insider trading as senators look to curb prediction markets
Summary
Two major prediction market platforms, Kalshi and Polymarket (websites where users bet on future events), announced new rules to ban insider trading (when people with special access to non-public information trade unfairly). The platforms added these restrictions after senators proposed legislation that could limit the prediction market industry.
Solution / Mitigation
Kalshi implemented specific bans: political candidates cannot trade on their own campaigns, and people involved in college or professional sports cannot trade contracts related to sports they play or work for. Both platforms also added new surveillance tools to monitor trading activity.
Classification
Original source: https://www.theguardian.com/technology/2026/mar/24/kalshi-polymarket-insider-trading-regulation
First tracked: March 24, 2026 at 02:00 PM
Classified by LLM (prompt v3) · confidence: 95%