>>60660313For starters, this isn't sold on the open market. First what you do is get a lawyer, a tax lawyer (not the same as the first), and a financial advisor. Then you go to your local tax agency and start talking with them about what you're going to do (through the lawyers). Once that's clear, you go to an exchange and trade over the counter (off market) with someone else for a fixed sum. This will not be the actual spot value, but it's more than you'd get just blindly crashing the market. It's the same with large amounts of gold, too. So you make the sale, probably using escrow, and then the money is transferred to a bank who your lawyer and financial advisor have already picked out (probably several banks, and your portfolio then gets diversified almost immediately by the financial advisor according to a plan you figured out before the sale; if there's any uncertainty, it gets dumped into treasuries until you can figure out what you want to hold).
At that point you get an allowance out of that to spend on lambos, mansions, etc.
If you DON'T do that, the tax man will rape you and steal your money until you can prove you got it legally, and once you're past them, no bank will actually talk to you directly and let you just deposit billions in an account, and even before that, you couldn't sell that much on the open market: the CEX will shut you down and tell you you need to go OTC and they'll want to talk to your lawyer to cover their own asses.