Wells Fargo reclaimed the top ranking in residential mortgage servicing at the end of 2011, a position that the firm last held back in 2006. A new Inside Mortgage Finance ranking and analysis shows that Wells continued to build its mortgage servicing portfolio through robust loan origination activity, but it wasn’t easy. Wells originated $120.5 billion in new loans during the fourth quarter, but managed to increase its servicing portfolio by just $7.5 billion, a 0.4 percent increase. That relatively small increase was enough to move well ahead of Bank of America, which reported a huge $165.8 billion net...