A significant number of independent mortgage bankers failed to turn a profit during the first quarter of 2014, but many firms are tightening their belts and hanging on, thanks to a strong market for mortgage-servicing rights. According to the Mortgage Bankers Association’s annual performance report due out late this week, mortgage bankers saw their net profit margin on production and secondary marketing slump to a negative 9 basis points, said MBA Chief Economist Mike Fratantoni. The number was preliminary, but it represents a huge decline since the gung-ho first half of 2013, when lenders generated about 120 bps in net income from production. Only about 55 percent of lenders participating in the survey, which is includes a large number of independent mortgage bankers, earned...