The Hyperliquid Policy Center (HPC) filed an amicus brief in the U.S. District Court for the District of Columbia, supporting the Commodity Futures Trading Commission (CFTC) and accusing CME Group of stifling innovation. CME had sued the CFTC in June over its approval of perpetual futures for Kalshi and Coinbase, which HPC argues enlarged the market rather than dividing it, opening exchanges to new market participants.