**[Overview of Mainstream Perp DEXs: Open Interest Across Platforms Rises, Hyperliquid's Open Interest Returns to $7 Billion]** BlockBeats News, March 25: According to DefiLlama data, trading volume on mainstream Perp DEX platforms slightly declined compared to yesterday, while open interest increased. Among them, Hyperliquid's open interest returned to $7 billion, with Aster's trading volume ranking second. The latest trading volume rankings across platforms are as follows: **Hyperliquid:** 24-hour trading volume approximately $7.81 billion, open interest approximately $7.07 billion; **Aster:** 24-hour trading volume approximately $2.58 billion, open interest approximately $1.90 billion; **EdgeX:** 24-hour trading volume approximately $2.56 billion, open interest approximately $1.18 billion; **Lighter:** 24-hour trading volume approximately $2.04 billion, open interest approximately $713 million; **Grvt:** 24-hour trading volume approximately $1.61 billion, open interest approximately $471 million; **Apex:** 24-hour trading volume approximately $1.22 billion, open interest approximately $118 million; **Pacifica:** 24-hour trading volume approximately $454 million, open interest approximately $76.73 million.