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Automated Underwriting and the Profitability of Mortgage Securitization

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  • Wayne Passmore
  • Roger W. Sparks

Abstract

This paper develops a game-theoretic model of mortgage securitization, which is then used to examine a potential effect of automated underwriting. The paper's primary supposition is that automated underwriting lowers the costs to competitive mortgage originators and a monopolist securitizer of identifying mortgage applicants who are good credit risks. Faced with lower underwriting costs, originators will screen a larger number of mortgage applicants in the hopes of holding more good risks in their portfolios and passing through more bad risks to the securitizer. This mounting adverse-selection problem causes the securitizer's expected revenues to decline; this effect can outweigh the cost-saving benefit of automated underwriting, causing the securitizer's return on equity to fall. Copyright American Real Estate and Urban Economics Association.

Suggested Citation

  • Wayne Passmore & Roger W. Sparks, 2000. "Automated Underwriting and the Profitability of Mortgage Securitization," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 28(2), pages 285-305.
  • Handle: RePEc:bla:reesec:v:28:y:2000:i:2:p:285-305
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    Cited by:

    1. Wayne Passmore & Shane M. Sherlund & Gillian Burgess, 2005. "The Effect of Housing Government-Sponsored Enterprises on Mortgage Rates," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 33(3), pages 427-463, September.
    2. Wayne Passmore, 2003. "The GSE implicit subsidy and value of government ambiguity," Finance and Economics Discussion Series 2003-64, Board of Governors of the Federal Reserve System (U.S.).
    3. W. Scott Frame & Lawrence J. White, 2005. "Fussing and Fuming over Fannie and Freddie: How Much Smoke, How Much Fire?," Journal of Economic Perspectives, American Economic Association, vol. 19(2), pages 159-184, Spring.
    4. Passmore, Wayne & Sparks, Roger & Ingpen, Jamie, 2002. "GSEs, Mortgage Rates, and the Long-Run Effects of Mortgage Securitization," The Journal of Real Estate Finance and Economics, Springer, vol. 25(2-3), pages 215-242, Sept.-Dec.
    5. Andrea Heuson & Wayne Passmore & Roger Sparks, 2000. "Credit scoring and mortgage securitization: do they lower mortgage rates?," Finance and Economics Discussion Series 2000-44, Board of Governors of the Federal Reserve System (U.S.).
    6. Passmore, Wayne & Sherlund, Shane M., 2016. "FHA, Fannie Mae, Freddie Mac, and the Great Recession," Finance and Economics Discussion Series 2016-031, Board of Governors of the Federal Reserve System (U.S.), revised 30 Jun 2017.

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