An early Ethereum ICO participant has sold an additional 501 ETH, continuing a series of profitable transactions. Initially acquiring 16,000 ETH at approximately $0.31 each during the Genesis phase, the investor later purchased 804 ETH at $459 per coin in 2017. Since April 2021, the participant has sold 14,394 ETH for $50.11 million, averaging $3,482 per ETH. The investor still holds approximately 2,410 ETH, valued at $5.85 million, achieving a total profit of $55.6 million, marking a 149x return on investment.