US Democrats Push Prediction-Market Bill as Kalshi Pulls War and Assassination Bets
Updated
Updated · BBC.com · May 21
US Democrats Push Prediction-Market Bill as Kalshi Pulls War and Assassination Bets
8 articles · Updated · BBC.com · May 21
US Democrats introduced legislation targeting insider trading and "gruesome" prediction markets, widening scrutiny of platforms such as Polymarket and Kalshi.
Kalshi said it has already removed controversial contracts and does not offer markets on war, terrorism or assassination, while saying it promotes responsible trading.
The push follows suspiciously timed wagers on the Iran war and Venezuela's Nicolas Maduro, including a case in which Gannon Ken Van Dyke allegedly made more than $409,000 on advance knowledge.
Enforcement is starting to tighten: Kalshi disciplined 2 users in February, and both major platforms say they have stepped up monitoring for insider trading.
The broader market is booming despite those concerns—Kalshi is valued at $22 billion, Polymarket at $9 billion, and users are disproportionately young men, many of whom lose money while a tiny elite captures most profits.
With AI bots reaping most profits, are prediction markets a fair game or simply a high-tech casino for the masses?
When secret information is used to bet on war, where does regulators' power to police insider trading actually end?
Are these markets a sign of economic despair, turning real-world events into a desperate lottery for young men?
From $400,000 Insider Windfall to Senate Ban: The 2026 Prediction Market Crisis and Its Regulatory Fallout
Overview
In 2026, prediction markets like Polymarket and Kalshi faced intense scrutiny after insider trading allegations surfaced, prompting lawmakers to pressure regulators for stricter oversight. The crisis escalated when U.S. Army Master Sergeant Gannon Ken Van Dyke was arrested for allegedly using classified information to make profitable bets on Polymarket. This highlighted concerns that government officials could exploit confidential information for personal gain, leading to calls for stronger safeguards and enforcement. The situation triggered a wave of legislative and regulatory actions aimed at protecting market integrity and restoring public trust in these rapidly growing platforms.