CoinMeta data: Bitmine has pledged over 5 million ETH, accounting for approximately 4.9% of the total Ethereum supply. According to its SEC document dated September 28th, Bitmine held 6,001,302 ETH on September 27th, of which 5,067,309 have been pledged, generating an annualized yield of about $334 million. The company stated that it is continuing to expand its Ethereum assets.