Lenders originating so-called conforming-jumbo mortgages that are eligible for sale to the government-sponsored enterprises continue to see better execution by delivering those loans to Fannie Mae and Freddie Mac instead of packaging them in non-agency mortgage-backed securities. However, conforming jumbos accounted for 36.3 percent of the $1.03 billion non-agency MBS JPMorgan Chase issued in February. And other banks could follow in placing such ...