That is a very big question as no one can actually say what percentage of people has such in their possession right now bit we donhave some whales and also exchanges can have such bit we can't get the figure for sure.
That is right, it is hard to tell, holding such Amount of bitcoin depends on the financial status of the investor and the amount bitcoin was sold for at the time the interest to invest in bitcoin arose. I doubt if we have anyone that can even still boast of having their BTC bought 10 years ago intact. We have several people that bought at 1 cent and sold at 1 dollar without ever thinking bitcoin will get to this stage.
The only people that I know usually do have up to such amount aside whales are traders, because tee more money they trade with, the more they get from it. Some have even been able to gather up to that, but because of personal needs, they end up spending. I could remember that there was time I could boast of 7 BTC, but as needs arises and I started spending, the BTC kept declining until it turns to 2 BTC, so for me, I can only boast of 2BTC right now for my bitcoin investment.