Where do billionaires keep their money?

Now since FDIC only covers $100K, so someone with $100M cash mush have 1000 accounts to keep his money safe? How does it work?

 

They own the bank

 

t-bills for liquidity

land for wealth preservation

 

Offshore?

 

lottery tickets

 

tbills, money market accounts, foreign bank accounts in aaa countries, cdars.

bear in mind, billionaires have most of their equity tied up in a business or stock

 

they can walk to their bank in dubai or the caymans