Bank and thrift first-lien portfolio holdings continued to grow in 2015, including a sharp increase in the fourth quarter, according to a new ranking and analysis by Inside Nonconforming Markets. Banks and thrifts held a total of $1.87 trillion in first-liens in portfolio at the end of the fourth quarter of 2015, up 0.9 percent from the end of the previous quarter and up 3.4 percent from the fourth quarter of 2014. The increase in holdings was largely driven by ... [Includes one data chart]