Perpetual decentralized exchanges (Perp DEX) achieved a significant milestone in September, with monthly trading volumes surpassing $1 trillion for the first time, reaching $1.143 trillion. This marks a nearly 50% increase from the previous month, according to data from DeFiLlama. Among the protocols, Aster, Hyperliquid, and Lighter each recorded trading volumes exceeding $100 billion over the past 30 days.