I have elected Trader Status with Mark to Market election. I am carrying forard my Net operating Loss from 2008. My understanding is that Net Operating Loss from trading in securities should NOT generate Alternative Minimum Tax. However, Turbo Tax doesn't seem to know about this and when it asks me for my NOL from proceeding year, it triggers a AMT Tax because of the 90% threshold. Maybe I can just override it on Turbo Tax and proceed?