Mortgage Bankers Association (MBA)

Only one-in-four companies were profitable for the quarter.

MBA says it's a seasonal pickup.

Industry experts say GSEs should abandon the DTI fees move.

Volume buoyed by drop in interest rates; some hesitancy due to banking concerns.

This month's credit availability decreased to its lowest level since January 2013.

Both refis and purchase loans rose; MBA also revises data for previous seven weeks.