A sharp divide between traditional finance and the rapidly growing prediction market sector erupted at a CFTC advisory meeting on August 20, 2026. CME Group CEO Terrence Duffy clashed with CFTC Chairman Michael Selig and Kalshi COO Luana Lopes Lara, warning that event contracts are highly vulnerable to manipulation. While Selig dismissed the concerns as 'fake news' pointing to offshore trading, the sector faces intense scrutiny over insider trading scandals and an ongoing jurisdictional battle between federal regulators and state officials.
CME-Kalshi regulatory clash
- ▪CME Group filed a lawsuit against the Commodity Futures Trading Commission and Chairman Michael Selig in June 2026, challenging the agency's regulatory approval of Kalshi.
- ▪CME Group Chief Executive Officer Terrence Duffy questioned why Kalshi was permitted to offer a compute prediction market while CME Group's proposed compute contracts remained under regulatory review.
- ▪CME Group Chief Executive Officer Terrence Duffy and Kalshi Chief Operating Officer Luana Lopes Lara traded sharp personal barbs during a Commodity Futures Trading Commission Innovation Advisory Committee meeting on August 20, 2026.
Prediction market manipulation concerns
- ▪CME Group Chief Executive Officer Terrence Duffy raised concerns that certain prediction-market contracts, particularly those self-certified by exchanges, are highly susceptible to market manipulation.
- ▪CME Group Chief Executive Officer Terrence Duffy cited prediction contracts tied to comments in Donald Trump's address to Congress and the timing of Venezuelan President Nicolas Maduro's ouster as examples of manipulated markets.
Market growth statistics
- ▪The global prediction market grew to $63.5 billion in 2025, up from $16.5 billion in 2024.
- ▪CME Group's derivatives exchange has cleared more than 100 million event contracts since launching the product line in December 2025.
Federal-state jurisdiction dispute
- ▪Commodity Futures Trading Commission Chairman Michael Selig asserted that the federal agency has exclusive jurisdiction over prediction markets, including sports-related contracts.
- ▪A Washington state judge ordered Kalshi to stop offering contracts on sports, elections, and politics in the state, ruling that the contracts likely violated state gambling and consumer protection laws.
- ▪The Commodity Futures Trading Commission ordered Kalshi to continue trading event contracts amid a separate legal dispute over New York state's attempt to block the platform's contracts.
Insider trading scandals
- ▪An active-duty U.S. service member was criminally charged with using classified intelligence to place insider bets on Polymarket regarding the potential capture of Venezuelan President Nicolas Maduro.
- ▪United States lawmakers have introduced legislation to ban sports- and casino-style prediction contracts, while the Senate passed a measure prohibiting members of Congress from trading on prediction markets.
- ▪A teleprompter operator for Donald Trump was accused of using insider knowledge of the president's address to Congress to place bets on the prediction platform Kalshi.
CFTC regulatory response
- ▪The Commodity Futures Trading Commission plans to propose additional rule amendments to strengthen consumer protections and govern how designated contract markets list event contracts.
- ▪The Commodity Futures Trading Commission proposed formal restrictions in June 2026 on event contracts involving war, assassination, or certain sports proposition bets deemed highly susceptible to manipulation.
- ▪Commodity Futures Trading Commission Chairman Michael Selig dismissed Terrence Duffy's manipulation claims as 'fake news,' stating that the specific contracts Duffy referenced were traded on offshore platforms outside the United States.
Story comments
Loading comments…