If you read my post, I didn't say you did. I simply asked you to attempt to do day-trade by selling short in your retirement account and get back with us on the results of that endeavor.
I did assume you had a retirement account, so maybe that was a stretch, although odds would say you do have one.
I too am under the impression you CAN NOT TRADE SHORT IN A RETIREMENT ACCOUNT.
The idea is with limited funds the stock could potentially run against your trade and you would have to cover with a margin call. You can NOT HAVE MARGIN IN A RETIREMENT ACCOUNT either. You are held to a limited amount of $'s added to a retiremnt account yearly unless it is a KEOG in which case you are limited to 25% of your net business gains(still here it is capped)