List of mainstream Perp DEX: Trading volume on most platforms has generally increased, but the expected issuance of coins by Lighter this year has decreased, resulting in a decrease in trading volume instead of an increase BlockBeats news, on December 18th, according to DefiLlama data, the trading volume of mainstream Perp DEX has generally increased in the past 24 hours. The vague statement of Lighter CEO has led to a decrease in market expectations for its coin issuance within the year, and its trading volume has not increased but decreased, now ranking third. Hyperliquid has risen to the top of the list. At the same time, most platforms have limited changes in TVL, and some platforms have seen a decline in open contracts compared to yesterday. The 24-hour trading volume of Hyperliquid is approximately 7.91 billion US dollars, TVL is approximately 4.16 billion US dollars, and open contracts are 6.67 billion US dollars; Aster's 24-hour trading volume is approximately 7.63 billion US dollars, TVL is approximately 1.3 billion US dollars, and open contracts are 2.41 billion US dollars; The 24-hour trading volume of Lighter is about 7.32 billion US dollars, TVL is about 1.46 billion US dollars, and open contracts are 1.65 billion US dollars; EdgeX's 24-hour trading volume is approximately $4.9 billion, TVL is approximately $386 million, and open contracts are $748 million; The 24-hour trading volume of Apex is about 2.44 billion US dollars, TVL is about 46.15 million US dollars, and open contracts are 140 million US dollars; The 24-hour trading volume of Backpack is approximately 1.38 billion US dollars, and TVL has not yet been made public, with an open interest of 198 million US dollars; Variational's 24-hour trading volume is approximately 1.02 billion US dollars, TVL is approximately 66.18 million US dollars, and open contracts are 331 million US dollars; The 24-hour trading volume of Pacifica is approximately 631 million US dollars, TVL is approximately 41.46 million US dollars, and open contracts are 56.96 million US dollars.