BitMEX co-founder Arthur Hayes repurchased Ethereum (ETH) for $10.5M in USDC after selling $8.32M worth at $3,507. He bought back at $4,150, following ETH’s rally to $4,000. Despite warning of a crypto dip due to macroeconomic pressures, institutions accumulated $4.17B in ETH since July. Hayes apologized on X for taking profits, vowing not to sell again.