CME Group sued the CFTC on Thursday, alleging that the agency was wrong in how it approved Kalshi's first U.S. perpetual futures product.

CME Group sued the CFTC on Thursday over the agency's decision to classify perpetual futures as futures contracts rather than swaps.

CME Group plans to sue the CFTC over its approval of crypto perpetual futures, arguing Dodd-Frank classifies them as swaps. CEO Terrence Duffy disclosed the plan on CNBC on June…