As of April 2026, the derivatives market accounts for about 85% of the total trading volume in the crypto industry. Perpetual contracts (perpetuals or perps) have become the dominant instrument, while decentralized platforms (perp DEX) are rapidly capturing market share from centralized exchanges (CEX). Hyperliquid has proven that fully on-chain solutions can compete with Binance or Bybit in speed and convenience, sparking a wave of innovation. In less than a year, the perp DEX segment has turned into one of the most competitive and dynamic areas in DeFi - featuring new architectures, high leverage, zero fees, and fierce competition for liquidity. In this article, we will break down in detail how perp DEX work, their key mechanisms (margin, liquidations, funding rate), advantages over CEX, risks, and provide a thorough comparison of market leaders: Hyperliquid , Aster , Extended , and Lighter . You will learn how they differ and how to choose the right platform for your needs.