; (IV) how frequently votes were changed when an error occurred or due to new information from issuers; and (V) the degree to which investment professionals of the institutional investment manager were involved in proxy voting decisions; and (iv) a certification that the voting decisions of the institutional investment manager were based solely on the best economic interest of the shareholders on behalf of whom the institutional investment manager holds shares. (B) Requirements for larger institutional investment managers Every institutional investment manager described in subparagraph (A) that has an aggregate fair market value on the last trading day in any of the preceding twelve months of at least $100,000,000,000 shall— (i) in any materials provided to customers and related to customers voting their shares, clarify that shareholders are not required to vote on every proposal; (ii) with respect to each shareholder proposal for which the institutional investment manager votes (other than votes consistent with the recommendation of a board of directors composed of a majority of independent directors) perform an economic analysis before making such vote, to determine that the vote is in the best economic interest of the shareholders on behalf of whom the institutional investment manager holds shares