According to on-chain data analyst Ember, whales that had previously sold high and low ETH sold 4,818 ETH ($12.11 million) at cost 1 hour ago. He previously sold ETH at a high point and bought back ETH at a low price: 5/21 sold 3,586 ETH at $3,667 for 13.15 million USDT, and later used 13.15 million USDT to buy back 5,236 ETH at $2,512. However, he sold 4,818 ETH at $2,514 an hour ago, which is basically the same as the price he bought earlier.