I own many shares of SFOR in my retirement accounts. I plan on saving that money for retirement if/when we see large price increases. Of course if it comes down to it and I need the money to spend sooner than that, with the type of gains I feel we may see, I would be more than willing to pay the tax penalty and take it out early. Fun for later hopefully. But as a short answer, in a brokerage IRA you can certainly likely own shares like SFOR in it.