Nkhoi: This is from the IRS web site. It tells how to unelect mark-to-market. If you have made a valid election under section 475(f), the only way to stop using mark-to-market accounting for securities is to request and receive written permission from the Service to revoke the election. Non-filing of the Form 3115 mentioned above will not invalidate a timely and valid election. To request permission to revoke your election under section 475(f), you must file a second Form 3115 and pay a fee. For more info search for "Topic 429 - Traders in Securities (Information for Form 1040 Filers)" @ www.IRS.gov Jack