This article says TD Ameritrade does offer to take worthless securities off your books. http://www.kiplinger.com/article/investing/T052-C001-S001-how-to-sell-worthless-stock.html But again, this is wholly unnecessary as SPNG is a worthless security as of the Chapter 7 bankruptcy. Get a new tax advisor - the one who told you that SPNG could not be written off as a worthless security is worthless as a tax advisor.