plan assets
(42) the term “plan assets” means plan assets as defined by such regulations as the Secretary may prescribe, except that under such regulations the assets of any entity shall not be treated as plan assets if, immediately after the most recent acquisition of any equity interest in the entity, less than 25 percent of the total value of each class of equity interest in the entity is held by benefit plan investors. For purposes of determinations pursuant to this paragraph, the value of any equity interest held by a person (other than such a benefit plan investor) who has discretionary authority or control with respect to the assets of the entity or any person who provides investment advice for a fee (direct or indirect) with respect to such assets, or any affiliate of such a person, shall be disregarded for purposes of calculating the 25 percent threshold. An entity shall be considered to hold plan assets only to the extent of the percentage of the equity interest held by benefit plan investors. For purposes of this paragraph, the term “benefit plan investor” means an employee benefit plan subject to part 4, any plan to which section 4975 of title 26 applies, and any entity whose underlying assets include plan assets by reason of a plan’s investment in such entity.