A certain whale/institution has transferred a total of 48,500 ETH to CEX in the past month, equivalent to approximately 154 million US dollars

According to on-chain analyst Yu Jin, a whale/institution that participated in Ethereum's ICO in 2015 with 1 million ETH (ICO price $0.311) has transferred 48,500 ETH (approximately $154 million) to CEX over the past month.

They moved 64,100 ETH from address 0x7d6...1B4 to address 0xe17...Ab7 and then gradually transferred the ETH into CEX through address 0xe17...Ab7.
Tracing back the source of the ETH at address 0x7d6...1B4 reveals it came from an initial block reward of one million ETH received by address 0x193...284 on July 30th,2015.
The whale/institution currently still holds as much as682,000ETH(approximately$1.756 billion):

34.5 thousandETH were staked viaaddress0xb05…8d3;
28.7 thousandETH are held viaaddress0x7d6…1B4;
50 thousandETH were staked viaaddress0xd65…22d.