GSEs, Mortgage Rates, and the Long-Run Effects of Mortgage Securitization
Our paper compares mortgage securitization undertaken by government-sponsored enterprises (GSEs) with that undertaken by private firms, with an emphasis on how each type of mortgage securitization affects mortgage rates. We build a model illustrating that market structure, government sponsorship, and the characteristics of the mortgages securitized are all important determinants of mortgage rates. We find that GSEs generally--but not always--lower mortgage rates, particularly when the GSEs behave competitively, because the GSEs' implicit government backing allows them to sell securities without the credit enhancements needed in the private sector. Using our simulation model, we demonstrate that when mortgages eligible for purchase by the GSEs have characteristics similar to other mortgages, the GSEs' implicit government-backing generates differences in mortgage rates similar to those currently observed in the mortgage market (which range between zero and fifty basis points). However, if the mortgages purchased by GSEs are less costly to originate and securitize, and if the GSEs behave competitively, then the simulated spread in mortgage rates can be much larger than that observed in the data. Copyright 2002 by Kluwer Academic Publishers
Volume (Year): 25 (2002)
Issue (Month): 2-3 (Sept.-Dec.)
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References listed on IDEAS
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- Passmore, Wayne & Sparks, Roger, 1996.
"Putting the Squeeze on a Market for Lemons: Government-Sponsored Mortgage Securitization,"
The Journal of Real Estate Finance and Economics,
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- Glenn B. Canner & Wayne Passmore & Brian J. Surette, 1996. "Distribution of credit risk among providers of mortgages to lower- income and minority homebuyers," Federal Reserve Bulletin, Board of Governors of the Federal Reserve System (U.S.), issue Dec, pages 1077-1102.
- 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.).
- John L. Goodman & Wayne Passmore, 1992. "Market power and the pricing of mortgage securitization," Finance and Economics Discussion Series 187, Board of Governors of the Federal Reserve System (U.S.).
- 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.
- Pagano, Marco & Roell, Ailsa, 1996. " Transparency and Liquidity: A Comparison of Auction and Dealer Markets with Informed Trading," Journal of Finance, American Finance Association, vol. 51(2), pages 579-611, June.
- Ambrose, Brent W & Buttimer, Richard & Thibodeau, Thomas, 2001. "A New Spin on the Jumbo/Conforming Loan Rate Differential," The Journal of Real Estate Finance and Economics, Springer, vol. 23(3), pages 309-335, November. Full references (including those not matched with items on IDEAS)
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