WinWater Home Mortgage and Two Harbors Investment are preparing to issue separate jumbo mortgage-backed securities, according to presale reports. WinWater’s deal is set to include some non-qualified mortgages while Two Harbors’ jumbo MBS sticks with the type of mortgages that have dominated jumbo MBS issued in recent years. The $287.74 million WinWater Mortgage Loan Trust 2015-3 is set to receive AAA ratings with credit enhancement of ...