I apologize, I reviewed this question again. These portfolio deductions were formerly deductible by individuals under IRS Section 67, subject to 2% AGI floor. This rule is not applicable to 2023 tax returns.
I suggest looking through the forms either in TurboTax online-tax tools-then-forms or try to click view tax summary, or you can view the forms in more detail once you pay for the TurboTax online product.
If you use TurboTax desktop, you can view the Forms by looking through the forms mode at the top right hander corner of TurboTax Desktop.
However, if you are not seeing anything regarding a cumulative amount for non-deductible expenses, it is because that portfolio deductions were formerly deductible by Individuals under IRC Section 67 subject to 2% AGI Floor.
