Nationstar and PennyMac led the ongoing charge of non-banks into the mortgage servicing business during the third quarter of 2013, according to a new Inside Mortgage Finance ranking. The two companies reported increases in their servicing portfolios of 17.9 percent and 19.1 percent, respectively, from the end of the second quarter. The other stand-out big gain was a 14.2 percent increase in servicing reported by EverBank. Non-bank servicers accounted...[Includes one data chart]