Portfolio lenders held to a cautious strategy for home-equity lending during the first half of 2012, with most companies not doing enough new business to offset runoff in their retained holdings, according to a new Inside Mortgage Finance ranking and analysis. But several large lenders reported significant increases in HEL originations during the second quarter, and some institutions managed to originate enough new business to increase their retained portfolios. The credit union sector continued to show more enthusiasm for the business than commercial banks and savings institutions. As of the end of June, banks, thrifts and credit unions held...[Includes three data charts]