House Oversight Proposes Prediction Market Limits For Officials

House Oversight Chairman James Comer released a staff memorandum on Friday following an investigation into insider trading by government officials, military personnel, and security-clearance holders on prediction markets like Polymarket and Kalshi. According to Decrypt, the probe gathered nearly 1,700 pages of documents and included five bipartisan staff briefings from prediction market platforms regarding how they detect and report suspicious activity.

The memorandum recommends that Congress consider new restrictions on federal personnel, ranging from an outright ban on trading prediction markets to narrower limits on specific contracts tied to government decisions. Committee members argued that applying such rules across all branches would reinforce the principle that government employees should not financially benefit from access to nonpublic information.

Insider Trading Concerns and Existing Laws

Chairman Comer framed the initiative around public trust, stating that Americans are rightly concerned about public corruption and that Congress has a duty to ensure laws adequately prevent insider trading. The memo notes that existing insider trading laws, including the Commodity Exchange Act as amended by the STOCK Act, already apply to prediction markets by barring federal employees and lawmakers from trading commodity futures, options, or swaps on nonpublic information.

Recent enforcement actions highlight the issue. In April, a U.S. soldier was charged over alleged Polymarket trades tied to a military operation capturing Venezuelan President Nicolas Maduro. In August, the Commodity Futures Trading Commission fined a former White House teleprompter operator for betting on presidential speeches.

Platform Self-Policing

The committee credited prediction market platforms for self-policing, noting that most reported insider trading incidents were first detected and flagged to regulators by the platforms themselves. The memorandum specifically highlighted Polymarket and Kalshi for strengthening detection protocols, referencing Polymarket's hiring of a former law enforcement expert and its rollout of surveillance software called PolyGraph built with Chainalysis.

Key facts

• House Oversight Chairman James Comer released a staff memorandum recommending Congress weigh new limits on federal personnel betting on prediction markets.
• The probe gathered nearly 1,700 pages of documents and five bipartisan staff briefings from prediction market platforms.
• Recommendations range from an outright ban to narrower limits on contracts tied to government decisions.
• Existing laws such as the STOCK Act and Commodity Exchange Act already apply to prediction markets.
• A U.S. soldier was charged in April over alleged Polymarket trades tied to a military operation, and the CFTC fined a former White House operator in August.