Oregon has rolling conformity with federal law and limits your capital loss against other income to $3,000. This is in TurborTax and also in Oregon and also on page 15 of the Form OR-40-N and Form OR-40-P Instructions.
Capital gain or loss. Determine the amount of gain or loss and capital gain distributions from Oregon sources for the part of the year you were a nonresident. Add the amount of your capital gains received and losses incurred during the part of the year you were an Oregon resident. Limit losses to $3,000 ($1,500 if married filing separately).
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