Whenever these types of questions appear I find them a bit hard to believe. The anonymous OP suddenly has $5M in cash? There's just a un-cashed check for $5M hidden in the sock drawer? Where is the money now? As soon as you show up at a bank with more than $100K you're going to be swarmed with people suggesting various things to do with your money. Hasn't the OP already had to deal with all the tax and legal surrounding a transaction like this? He or she should be familiar with a flotilla of financial professionals by now.