if satoshi nakomoto mined 1 million bitcoins in early days. who own the second worlds biggest bitcoin wallet? 
No one knows on who's the second or the people that has the largest bitcoins on their wallet.
And these are the businesses that are hodling a lot of bitcoin for their services and right now the number 1 is bitfinex and it is just their cold storage, I wonder on how many in total bitcoins they are holding. Well even we know who are those people that holds a lot of bitcoin it will never change the fact that I'm holding a few one.