Mortgage Bankers Association (MBA)

MBA survey finds overall volume increased 7.4% from a week earlier.

Sends letter to agency director raising concerns about changes, including LLPAs based on debt-to income ratios.

Combined with upward revisions for November & December, market proves even stronger than many thought.

After rising for 3 weeks in a row, the MBA's Market Composite Index fell 9% on a seasonally adjusted basis.

The median payment fell to $1,920 in December from $1,977 in November. 

MBA economist says homebuying activity remains 'tepid.'