An address withdrew 17,925 ETH from Kraken in the past half hour

Odaily News According to on-chain analyst Ember, a certain address withdrew another 17,925 ETH ($50 million) from Kraken in the past half hour, and has withdrawn a total of 72,050 ETH worth $200 million in 22 hours.
Each withdrawal is worth $10 million or $20 million of ETH, which looks very much like buying ETH and then withdrawing it to an on-chain address.