Issuers of non-agency MBS injected some variety into the market in recent weeks with a deal backed solely by non-qualified mortgages and improvements to the representations and warranties on a jumbo MBS. Lone Star Funds issued a $72 million non-agency MBS backed mostly by non-QMs originated by Caliber Home Loans, a lender owned by the private-equity firm. Bloomberg first reported on the deal, which was priced on Aug. 7. Details on COLT 2015-A have been...