Banks large and small varied their portfolio lending tactics in 2012, with some increasing first-lien originations for portfolio and others allowing runoff and even selling some of their holdings. Overall, bank and thrift first-lien portfolio holdings increased in 2012 compared with the previous year, with originations outpacing prepayments and sales. Banks and thrifts held $1.80 trillion in first-lien mortgages in portfolio at the end of 2012, up 2.3 percent from the end of 2011, according to ... [Includes one data chart]