Security issuers, investors and the rating services largely praised unsolicited rating requirements established by the Securities and Exchange Commission in 2010, but they had different views on how the rules should be changed. “Rating agency information arbitrage has been eliminated,” Kevin Duignan, global head of structured finance at Fitch Ratings, said of the SEC’s Rule 17g-5, which established unsolicited rating standards. “We’re all getting the same information and we know we’re getting the same information.” Rule 17g-5 requires...