Perpetual decentralized exchanges recorded $1.049 trillion in 30-day volume as of October 24, crossing the $1 trillion threshold for the first time, data show. On-chain open interest stands at $15.83 billion, down 12% over the same period. The surge followed major liquidations on October 10-11, when a tariff-driven selloff triggered what industry trackers described as the largest liquidation event in crypto history.