CME vs Kalshi: The Prediction Market War Turns into Public Insult at CFTC Meeting

An official hearing, three egos, zero consensus. CME Group's CEO, Terrence Duffy, warned on Thursday that some contracts related to prediction markets remain vulnerable to manipulation. This was during a meeting of the Commodity Futures Trading Commission (CFTC) Advisory Committee on Innovation.

The exchange quickly escalated, pitting the regulator, the CME's CEO, and Kalshi's COO in a rarely seen verbal sparring during an official hearing.

• A CFTC meeting was the stage for a tense confrontation between the CME, its president Terrence Duffy, and Kalshi's COO.

• Terrence Duffy raised concerns about the possible manipulation of certain market contracts, citing controversial examples and sparking heated exchanges.

In detail, Terence Duffy specifically targeted the self-certification mechanism, which allows thousands of contracts to hit the market without thorough regulatory review. He cited two specific examples: bets on what President Donald Trump would say during his State of the Union address, and on the date of capture of Venezuelan President Nicolás Maduro.

In both cases, suspicions of insider trading emerged. An American military member was even arrested by the FBI in April for betting on Polymarket based on classified information related to Maduro.

The CME itself, however, is not a neutral spectator. Its derivatives platform has traded over 100 million event contracts since their launch last year, according to The Block.

The response was swift. CFTC Chairman Michael Selig interrupted Duffy to clarify that the contracts in question had never been listed in the United States. It happened abroad, and that is false information, he retorted. Duffy, however, did not back down.

The sparring did not stop there. Luana Lopes Lara, COO of Kalshi, then asked Duffy if the CME had ever experienced internal manipulation issues.

I have more people in my regulatory department than you have in your entire company, he replied. She did not let it pass: Maybe you should learn efficiency. He had the last word: Maybe you should learn what a credible market is.

The crux of the dispute goes far beyond the egos involved. Elected officials from several U.S. states are demanding oversight of contracts with sports connotations, which they equate to illegal betting under their own gambling laws. Thirty-eight state attorneys general are already supporting Massachusetts in its legal battle against Kalshi on this specific issue.

Selig, for his part, claims exclusive jurisdiction of his federal agency over the entire sector, including sports. He is suing states that attempt to oppose this.

Kalshi and Polymarket today together weigh nearly $20 billion in valuation, a sector that has seen its volume swell by over 2,800% in a year.

Selig promised, during this same meeting on August 20, new rules governing how platforms list their event contracts. An announcement that does not in any way close the dispute between historical derivatives players and young crypto-native platforms.