Freddie Mac is preparing to issue a $639.91 million Whole Loan Securities transaction backed by conforming-jumbo mortgages, according to Moody’s Investors Service. Some 65.9 percent of the mortgages in the transaction were originated by Caliber Home Loans, followed by Wells Fargo Bank with a 19.1 percent share and Quicken Loans with a 10.0 percent share. JPMorgan Chase recently opted to include conforming-jumbo mortgages in a non-agency ... [Includes five briefs]