Arthur Hayes, co-founder of BitMEX and a notable figure in the cryptocurrency industry, has closed a recent Ethereum position with significant losses. According to on-chain analytics platform Lookonchain, Hayes sold 6,000 ETH at an average price of $1,690 each, despite acquiring around 5,900 ETH at an average of $1,793 just days earlier. This resulted in an estimated $606,000 loss for Hayes, with the total sale value amounting to approximately $10.14 million.