A cryptocurrency whale, identified by the address 0x172b, sold 5,171 ETH valued at $23.79 million at a price of $4,601 per ETH, incurring a loss of $206,000. The whale had purchased the same amount of ETH two days prior at an average price of $4,641, driven by fear of missing out (FOMO). This transaction highlights the risks associated with trading based on emotional impulses.