[Aster: S3 Buyback Expenditure Nears 49.3 Million USDT, S4 Buyback Plan About to Begin] Perpetual Contract DEX Aster posted on the X platform stating that the S3 buyback plan is nearing its end, with a total expenditure of 49,299,999 USDT and a total buyback of 47,065,447 ASTER tokens. Additionally, Aster announced that the S4 buyback plan is about to begin, with details on buyback allocation, dates, and addresses to be announced soon.