There is no way to know the owner unless they announce it publicly their wallet address. Also tried this look up if it really gets the owner name to confirm if its genuine i tried my BTC address although can't see the name you can see how much it contains -> https://bitcoinwhoswho.com/

Unless you could hacked Coinbase and do database search about grayscale or manually copy paste all those whale wallets found - > https://bitinfocharts.com/top-100-richest-bitcoin-addresses.html