The supply of home loan debt outstanding grew for a third straight quarter in late 2015, including an ongoing ride higher in un-securitized portfolio mortgages. The Federal Reserve reported that $9.986 trillion of home mortgages were outstanding at the end of last year, a 0.3 percent increase from the third quarter. The growth rate slowed a bit – the market grew by roughly twice that rate from March to September – but the fourth quarter put unpaid home mortgage debt up 1.0 percent from the end of 2014, the first annual increase since 2007. The single fastest-growing segment of the market continued...[Includes two data tables]