The supply of “conforming-jumbo” mortgage originations flowing into agency mortgage-backed securities programs contracted sharply in the fourth quarter of 2015, but overall jumbo lending still held up better than the overall market, according to a new Inside Mortgage Finance analysis. During the final three months of 2015, Fannie Mae, Freddie Mac and Ginnie Mae securitized $24.69 billion of mortgages with loan amounts that exceeded the baseline conforming loan limit, $417,000… [Includes three charts]