I cashed in $5,000 in mutual fund shares, and incorrectly reported a cost basis of $3850 last year. The actual cost basis is $54,000, so I'll be amending my return. In TurboTax, the Form 8949 now shows a loss of $49,000. Is that correct? I see where the $49,000 comes from, but I didn't actually lose $49,000.
