Gannon Van Dyke faces landmark Polymarket insider trading trial

The U.S. Commodity Futures Trading Commission has proposed a new framework for reviewing prediction market contracts that could reshape how platforms such as Polymarket and Kalshi operate in the United States. According to a Wall Street Journal report, the CFTC…

Kalshi's new rules force traders to disclose their employers before trading high-risk markets flagged for insider trading or manipulation.

Prediction market accuracy has suffered under both weak and excessive insider trading enforcement, according to a new academic study that argued a complete ban could leave markets less informative. According to a June 2 research paper by Balbinder Singh Gill,…

Kalshi has introduced mandatory employer disclosures for certain traders and expanded its market surveillance program after reporting more than 150 investigations, over 100 blocked insider-trading attempts, and 20 law-enforcement referrals during the first quarter of 2026. According to a company…

“The same insider trade that improves the accuracy of the price today can reduce the participation that makes the price informative tomorrow,” said Balbinder Singh Gill.

Kalshi's new measures may deter insider trading but risk pushing traders to unregulated platforms, impacting market participation and oversight. The post Kalshi rolls out whistleblower services and employment verification to curb insider trading appeared first on Crypto Briefing.

The insider trading case is the government's first to center on prediction markets.

Polymarket's 2026 FIFA World Cup prediction markets have accumulated more than $1.8 billion in cumulative trading volume as the tournament's group stage gets underway, with France and Spain trading as the narrowest co-favorites.