According to this latest research showing the top 10 richest holders of bitcoin. This reinforces the fact that people still belief that the price of bitcoin will continue to rise and there is no panic selling from those holders despite the fact that the price of bitcoin is going on a dip presently.
https://dowbit.com/infographics-top-10-richest-bitcoin-addresses/
https://dowbit.com/infographics-top-10-richest-bitcoin-addresses/
Several of those are bitcoin exchanges, and they hold other peoples coins in them. The "richest" addres belongs to bitfinex.
Most of those addresses do not belong to rich individuals.
Personally I think that they are crazy. If they were smart they would divide the coins to several addresses. It is safer to have multiple addresses.
If someone succeeded in emptying one address they still would not lose everything.
The only reason to have so much in one address is that it may be good publicity.
