According to CoinMeta, after a 20% surge on August ETH, the giant whale siblings sold 18,500 units of ETH for $2,356, making a profit of $10.49 million. Recently, after a 15% decline in ETH, this whale purchased 10,800 units of ETH for $22 million at a price of $2,038 just 9 hours ago. This whale adopts a strategy of buying when ETH drops by more than 10% in a short period and selling when it rises by more than 10%.