writing off losses of a bankrupt company

[gabjo00]

My client was holding stock of a company that went bankrupt and is de-listed.  He showed me something he found online that says in this situation, the loss is not limited to $3K p/yr but can be entirely written off in the year it becomes completely worthless.  I did some research and I think he might be correct but I don't know how to do show this in proseries and also is he correct because its the first time I have this situation. 

Please help.

[TaxGuyBill]

After a bit of Googling, as far as I can tell, it is still subject to the $3000 limit UNLESS it qualified as Section 1244 Stock.  If it was "listed" on an Exchange, I would guess it does not qualify as 1244.