Thanks to declining interest rates and higher prepayment speeds in the third quarter – especially on Ginnie Mae receivables – several publicly traded nonbanks were forced to write down the asset value of their mortgage servicing rights, causing millions of dollars in red ink. According to a review by Inside Mortgage Finance of the earnings statements of six nonbanks, the combined servicing markdown was an ugly $448 million. The group includes Nationstar Mortgage, Ocwen Financial, PennyMac Financial Services, PHH Corp., Stonegate Mortgage and Walter Investment Management Corp., the parent of Ditech Financial. Walter took...