; or (ii) establishes that the fiduciary will refrain from voting on proposals or particular types of proposals when the assets of a plan invested in the issuer relative to the total assets of such plan are below 5 percent (or, in the event such assets are under management, when the assets under management invested in the issuer are below 5 percent of the total assets under management). (C) Exception No proxy voting policy adopted pursuant to this paragraph shall preclude a fiduciary from submitting a proxy vote when the fiduciary determines that the matter being voted on is expected to have a material economic effect on the investment performance of a plan’s portfolio (or the investment performance of assets under management in the case of an investment manager); provided, however, that in all cases compliance with a safe harbor voting policy shall be presumed to satisfy fiduciary responsibilities with respect to decisions not to vote. (6) Review A fiduciary shall periodically review any policy adopted under this subsection. . (b) Effective date The amendments made by subsection (a) shall apply to an exercise of shareholder rights occurring on or after January 1, 2024.