Nonbank mortgage servicers continued surging into the top ranks of servicers during early 2013, more than doubling the size of their stake in the market compared to a year ago, according to a new market analysis and ranking by Inside Mortgage Finance. The seven largest nonbank servicers accounted for $1.40 trillion in mortgage servicing at the end of the first quarter, an increase of 68.9 percent in just three months. Compared to a year ago, the combined portfolio of these companies was up 144.3 percent. Ocwen Financial rose...[Includes one data chart]