Trader 0x8A21 has successfully executed a profitable trading cycle with Ethereum (ETH). Six months ago, the trader sold 499 ETH for $2.21 million at a price of $4,434 per ETH. Recently, they repurchased 1,004 ETH for $2.08 million at a significantly lower price of $2,070 per ETH. This strategic move highlights a classic 'sell high, buy low' approach, capitalizing on market fluctuations.