The term “debt financed portfolio stock” means any portfolio stock if at some time during the base period there is portfolio indebtedness with respect to such stock.
If, as of the beginning of the ex-dividend date, the taxpayer owns stock of any bank or bank holding company having a value equal to at least 80 percent of the total value of the stock of such bank or bank holding company, for purposes of paragraph (2)(A)(i), the taxpayer shall be treated as owning any stock of such bank or bank holding company which the taxpayer has an option to acquire.
The term “bank holding company” means a bank holding company (within the meaning of section 2(a) of the Bank Holding Company Act of 1956).
For purposes of determining whether the requirements of subparagraph (A) or (B) of paragraph (2) or of subparagraph (A) of paragraph (3) are met, stock described in section 1504(a)(4) shall not be taken into account.
In the case of any stock which was not held by the taxpayer throughout the base period, paragraph (1) shall be applied as if the base period consisted only of that portion of the base period during which the stock was held by the taxpayer.
The term “portfolio indebtedness” means any indebtedness directly attributable to investment in the portfolio stock.
Under regulations prescribed by the Secretary, any reduction under this section in the amount allowable as a deduction under section 243 or 245 with respect to any dividend shall not exceed the amount of any interest deduction (including any deductible short sale expense) allocable to such dividend.
The regulations prescribed for purposes of this section under section 7701(f) shall include regulations providing for the disallowance of interest deductions or other appropriate treatment (in lieu of reducing the dividend received deduction) where the obligor of the indebtedness is a person other than the person receiving the dividend.