The mortgage originations market is still, by and large, a banker’s game, but nonbank lenders are continuing to muscle up their share of new production, according to a new Inside Mortgage Finance analysis and ranking. During the first quarter of 2014, nonbank lenders accounted for 37.7 percent of originations made by a large sample of lenders that covered more than three quarters of the total production during the period. That was up from a 35.5 percent nonbank share in the fourth quarter of 2013 and a 26.0 percent nonbank share back in the first three months of last year. The nonbank share of originations is...