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HOUSE PANEL PROBES INSIDER TRADING ON PREDICTION MARKETS

INDUSTRY DESK1 MIN READ
FRI, MAY 22, 2026

■ AI-SUMMARIZED FROM 3 SOURCES ▸ TIMELINE

The House Oversight Committee is investigating whether customers of prediction market platforms Kalshi and Polymarket are using non-public information for insider trading. The inquiry follows a series of suspiciously well-timed trades.

The investigation targets how traders on these platforms could exploit confidential information to place bets with unusual accuracy. Prediction markets allow users to wager on event outcomes including elections, corporate earnings, and geopolitical events. Kalshi and Polymarket have grown rapidly as alternatives to traditional betting, attracting millions in trading volume. However, their minimal regulatory oversight has raised red flags among lawmakers concerned about market manipulation and information asymmetries. The committee is examining whether traders connected to companies or government agencies are leveraging advance knowledge of developments before public disclosure. Such activity would constitute illegal insider trading, similar to violations prosecuted in traditional securities markets. The timing of certain trades—particularly around earnings announcements and political events—has drawn scrutiny. Regulators are seeking to determine whether the platforms have adequate safeguards to detect and prevent such trading patterns. The investigation underscores growing regulatory attention on prediction markets as they gain mainstream adoption and trading volume.

■ SOURCES

Bloomberg TechBloomberg TechBloomberg Tech

■ SUMMARY WRITTEN BY AI FROM THE LINKS ABOVE

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