A flurry of prime non-agency mortgage-backed securities priced in October with issuance from JPMorgan Chase, Flagstar Bank and American International Group totalling $2.13 billion. Chase brought a $911.1 million deal backed by a higher than usual share of mortgages eligible for sale to the government-sponsored enterprises. Some 46.7 percent of the dollar volume of loans backing JPMorgan Mortgage Trust 2017-4 was loans eligible for sale to Fannie Mae or Freddie Mac ...