ISS challenges SEC over recent proxy adviser guidance Fiduciary Governance Blog • November 1, 2019 November 1, 2019 • News • Tags: Proxy voting, SEC Proxy adviser ISS sues US markets regulator over guidance aimed at curbing advice Proxy adviser Institutional Shareholder Services on Thursday sued the U.S. Securities and Exchange Commission over guidance aiming to clarify how investors and firms that vote on their behalf should cast their ballots in corporate elections. CNBC Print Email LinkedIn Twitter Facebook