Say you put a disallowed $6,000 in your Roth IRA and bought an option with 10x leverage and it pays off.
You now have $60,000 in your Roth but after the tax return due date, you only have to remove $6,000.
The rest stays in the Roth IRA.
If it doesn't pay off you lose $6,000, or possibly less if you started with an empty Roth IRA.
@tomandjerry1
