What kind of organization would this be? Who? Buying like this?

A certain address has been increasing its holdings by 1,000 BTC every day since the end of August, and currently holds 12,500 BTC

On September 8, according to HODL15Capital monitoring, a certain address ("Mr.500") increased its holdings by 500 BTC on August 26, and then continued to increase its holdings by 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 US$677 million.

$BTC