What is this?
Discussion
A wallet address that has been stacking big time.
https://bitinfocharts.com/top-100-richest-bitcoin-addresses.html
Maybe Upbit, a S. Korean crypto exchange?
https://platform.arkhamintelligence.com/explorer/address/1Ay8vMC7R1UbyCCZRVULMV7iQpHSAbguJP