According to BlockBeats, on September 8, according to HODL15Capital monitoring, a certain address (“Mr.500”) increased its holdings of 500 BTC on August 26, and then increased its holdings of 500 BTC each day through two transactions (a total of 1,000 BTC) every day.
As of September 7, the address held 12,500 BTC, equivalent to approximately $677 million.