this is a classic FUD topic my friend.
he is giving a "big number" with a "big name" to create panic. and he uses the word "owns" as if they have bought that much to control. government agencies are not known to invest in assets!
they may seize some from criminals and hold it until court rules about it and then auction it but this is not  called "owning bitcoin".

and until he provides a source for his numbers, i call bullshit on all of them.