**[Overview of Mainstream Perp DEXs: Only Three Platforms Exceed $5 Billion in Trading Volume, Lighter Returns to the Top Spot]** BlockBeats News, December 17, according to DefiLlama data, in the past 24 hours, activity on leading mainstream Perp DEX platforms has cooled down, with Lighter's trading volume rebounding to the top spot, followed by Aster and Hyperliquid. Meanwhile, the majority of platforms maintain high levels of open interest, indicating that while market trading activity has declined, existing positions are still in contention. - **Lighter**: 24-hour trading volume approximately $7.51 billion, TVL approximately $1.46 billion, open interest $1.67 billion; - **Aster**: 24-hour trading volume approximately $6.91 billion, TVL approximately $1.32 billion, open interest $2.53 billion; - **Hyperliquid**: 24-hour trading volume approximately $5.37 billion, TVL approximately $4.13 billion, open interest $7.23 billion; - **ApeX**: 24-hour trading volume approximately $2.83 billion, TVL approximately $46.24 million, open interest $101 million; - **EdgeX**: 24-hour trading volume approximately $2.28 billion, TVL approximately $389 million, open interest $786 million; - **Variational**: 24-hour trading volume approximately $1.24 billion, TVL approximately $66.18 million, open interest $337 million; - **Backpack**: 24-hour trading volume approximately $1.23 billion, TVL not yet disclosed, open interest $204 million; - **Pacifica**: 24-hour trading volume approximately $587 million, TVL approximately $41.58 million, open interest $59.02 million.