A mysterious whale bought 30,000 $ETH($54.9M) at $1,830 and 600 $BTC($56.94M) at $94,900 via OTC on Apr 27. 3 hours ago, he sold 30,000 $ETH($78.63M) at $2,621 via OTC, earning $23.73M. His 600 $BTC remains unsold and is now worth $66.5M, up $9.6M.