group ownership percentage

For purposes of this paragraph, the term "group ownership percentage" means, with respect to any United States shareholder in any affiliated group, the percentage of the value of the stock of such United States shareholder which is held by other includible corporations in such affiliated group. Notwithstanding the preceding sentence, the group ownership percentage of the common parent of the affiliated group is 100 percent. Any term used in this subparagraph which is also used in section 1504 shall have the same meaning as when used in such section.