President Trump signed an order to open up cryptocurrency and private equity to 401(k) plans, but there's no guarantee they come rolling in.

Right now, private equity is technically allowed in retirement plans, but it’s rare — though some companies like BlackRock are planning new offerings. There are ways people can invest in crypto through their 401 (k)s, too, but it’s also not common. And many 401 (k) recordkeepers don’t support private equity funds yet.