Warehouse commitment levels remained flat at $50.0 billion in the first quarter as a tepid origination market early in the year reduced the need for new lines, according to exclusive survey figures compiled by Inside Mortgage Finance. But with the first quarter firmly in the rearview mirror, warehouse executives are reporting a robust spring/early summer with new customers coming on board and nonbanks tapping more of the lines already committed to them. “We’ve had...[Includes one data table]