I am in the exact same situation as AAAA. I bought and sold stocks many times last year. Sometimes the same stock within 31 days sometime different stock. I never withdrew any money from my stock account to my bank account. Overall I had a loss (very minimal). Lets say I started with $5000 and  the balance on my portfolio at the end of the year was $4500.

Now my question to the tax experts here is:

If I don't want to deduct the loss ($500), can I file my 2009 Tax without even mentioning this stock thing? Will IRS question me why I did not include my loss?

Serious answers only, please.