Perp Wars: CME Sues CFTC, Claims Kalshi's Bitcoin Forever-Contracts Are Sneaky Swaps 🏛️

CME Group filed a federal lawsuit against the U.S. Commodity Futures Trading Commission on Thursday, June 18, 2026, targeting the regulator's late-May approval of Bitcoin perpetual futures for prediction-market platform Kalshi — the first regulated U.S. listing of perps. The suit, announced a day earlier by CEO Terrence Duffy on CNBC's Fast Money and later confirmed to Reuters, names CFTC Chair Michael Selig and contests the agency's authority to greenlight the products as futures. Duffy argued on air that perps are legally swaps under the Dodd-Frank Act and that Selig "circumvented the Dodd-Frank Act" by approving them without a formal rulemaking process. "Under the Dodd-Frank Act, it clearly defines what a swap is and what a future is, and when there's two parties exchanging payments to each other, that's deemed a swap," Duffy told CNBC. Perps never expire and rely on periodic funding payments between traders rather than set expiration dates, with leverage reaching as high as 50-to-1.

CME's structural leverage in the dispute centers on benchmark licensing. Duffy said CME holds exclusive licensing agreements with every major provider of crypto benchmark indexes, meaning any platform offering perps would have to route through CME regardless of how the products are labeled. "We have an exclusive license with every single provider of the benchmarks. So all of these would have to go through CME regardless of the perpetual. They would have to list them as swaps if that's the way that it came out," Duffy said. A favorable ruling could effectively force Kalshi, Coinbase, and Kraken to operate any U.S. perp markets under CME's framework. Coinbase was separately cleared by the CFTC to connect U.S. customers to offshore perps.

CFTC Chair Michael Selig defended the approval earlier the same week, telling CNBC it was "time to approve regulated futures contracts that have no expiration date." A CFTC spokesperson dismissed the threatened lawsuit as "frivolous" and said the agency looks forward to addressing the claims. Kalshi has since launched perpetual futures tied to $BTC, $ETH, $XRP, and HYPE, according to CoinGape, following a CFTC order issued the prior Friday. Bitnomial received a similar CFTC clearance in December under former chair Caroline Pham, though those products carried a 25-year limit and were not technically perpetual.

The lawsuit arrives as the Senate debates the CLARITY Act, which would formalize CFTC authority over digital commodity derivatives, making the court's classification ruling directly relevant to how that framework is applied. Duffy acknowledged he initially considered shelving the suit before proceeding, and said he spent eight months preparing the challenge with CME's board. "I'm always up for a good battle," Duffy said. "I've never shied away from one, and I won't shy away from this." The announcement came the same day CME named Duffy's successor; he will step down in March 2027.