Funding Shocks and Competition in the Mortgage Market

How do primary and secondary mortgage markets interact? This paper shows that funding shocks to mortgage originators interact with the degree of local credit market competition to increase lending growth. Specifically, I use a shift-share approach to estimate the causal effect of the growth in private-label securitization related funding. This effect is stronger in more competitive mortgage markets; with less-regulated non-bank lenders being most responsive to this competition channel. The results emphasize the interaction between the two layers of the mortgage market and document how credit market structure can amplify, or dampen, shocks to the economy