As an aside, one way to launder money is, with a compliant bank, set up two trading entities, then have them take opposite sides in futures trades. One side will always win, that's a legit profit, the other side will always lose, that's a legit loss. All it costs are the minor transaction fees. Another way is via construction firms, with duplicate invoices, etc.
Both ways are detailed in Nick Tosches book, "Power on Earth", about Michele Sindona, who was involved in the Vatican Bank scandal some years back, which was touched upon in "Godfather II".