Data from COINOTAG (Oct 3), citing strategicethreserve, shows Ethereum (ETH) treasury holdings of 5.49 million ETH, representing about 4.54% of circulating supply. At the same time, Ethereum Spot ETF custody totals 6.74 million ETH, or roughly 5.57% of circulation. Together these positions comprise approximately 10.11% of the total Ethereum supply. Such verified on-chain and custody metrics are material for assessing market liquidity, supply concentration and institutional allocation trends, and should be incorporated into rigorous portfolio and risk-management analyses.