What are you talking about? You think Warren Buffet can covertly sell his holdings and not have anybody find out? If he executes any sales the brokers will have

What are you talking about? You think Warren Buffet can covertly sell his holdings and not have anybody find out? If he executes any sales the brokers will have the records; if he transfer the funds to any bank in the world, there will be plethora of records for regulators to access. There's no way he can secretly hide large transfers.