Issuers of non-agency mortgage-backed securities should disclose when they seek a rating from a firm and ultimately decide not to hire the firm, according to a variety of non-agency participants. “If one rating is 7 percent subordination and the other is 15 percent, we don’t need to accept the 15 percent subordination, but we do need to disclose the 15 percent subordination opinion to investors,” Martin Hughes, CEO of Redwood Trust, said this week at a roundtable hosted by the Securities and Exchange Commission ...