InvestmentsTop Global NewsMarketsReal Estate Proxy adviser ISS sues US markets regulator over guidance aimed at curbing advice By financialnews_rlv83x - October 31, 2019 0 92 Proxy adviser Institutional Shareholder Services Inc 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.