A client of mine has a single-employee C corporation, with pension and profit-sharing plans. Also, an S corporation with his wife as other employee and a Roth-401(k) there. he and she also have small traditional IRA’s. All investment accounts in these plans are self-directed.
He is interested in directing one or more of the accounts to hold publicly-traded shares in cannabis companies – either US or Canadian.
If they would pass his due diligence as performance, is there any prohibited transaction, or other DOL, IRS etc. rules that would put his plan(s) at risk?
I have looked into this in my resources (Checkpoint and BNA) and do not find rules prohibiting investments in these companies.
But interested in thoughts of others with experience or familiarity.

Many thanks – Bruce