Where do you think Bill Gates Stores his money?

He has millions of couches full of loose change stashed strategically across the world.

It's all in bitcoin, let's be honest here.... Who wouldn't?

He's stock his money in himself house, in a vault, I think, but okay, he need an big vault

Top investor in bitcoin obviously...hahahaha. Possibly has his own vault in a hidden location or stored in offshore accounts?

Uhm, what are you planning mah man? Are you making some Payday 2 shit and robbing his stuff lmao :D
But yeah, several private bank accounts I guess.

Probably spread out through multiple bank accounts to ensure safety of it and what not

Off shore accounts in other names to avoid tax....
But for real tho, prolly a bank like everyone else.

Bill Gates is a smart man. He knows about stock market crashes and security risks.

For one, his money is distributed as his net worth in Microsoft.

He must store his true 'money' on a great many different bank accounts in various banks, in different countries, to ensure that his money is safe.

OR he stores it all in some warehouse that's even more secure than Fort Nox, itself.

he has a little piggy bank where he stores all his money :D

It will all be in futures or stocks. No rich person holds billions in cash its just a bad idea even in a bank