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Unobservable Heterogeneity and Rational Learning: Pool-Specific versus Generic Mortgage-Backed Security Prices

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  • Stanton, Richard Henry

Abstract

Previous mortgage prepayment and valuation models assume that two mortgage pools with the same observable characteristics should behave indistinguishably. However, even pools with apparently identical characteristics often exhibit markedly different prepayment behavior. The sources of this heterogeneity may be unobservable, but we can infer information about a pool from its prepayment behavior over time. This article develops a methodology for using this information to calculate pool-specific mortgage-backed security prices. Knowledge of these prices is important both for portfolio valuation and for determining the cheapest pool to deliver when selling mortgage-backed securities. We find that unobservable heterogeneity between mortgage pools is statistically significant, and that pool-specific prices, calculated for a sample of outwardly identical mortgage pools between 1983 and 1989, may differ greatly from any single representative price. Copyright 1996 by Kluwer Academic Publishers

Suggested Citation

  • Stanton, Richard Henry, 1996. "Unobservable Heterogeneity and Rational Learning: Pool-Specific versus Generic Mortgage-Backed Security Prices," The Journal of Real Estate Finance and Economics, Springer, vol. 12(3), pages 243-263, May.
    • Handle: RePEc:kap:jrefec:v:12:y:1996:i:3:p:243-63
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    Cited by:

    1. John Daniel, 2010. "A fixed-rate loan prepayment model for Australian mortgages," Australian Journal of Management, Australian School of Business, vol. 35(1), pages 99-112, April.
    2. Downing, Chris & Stanton, Richard & Wallace, Nancy E., 2003. "An Empirical Test of a Two-Factor Mortgage Valuation Model: How Much Do House Prices Matter?," Research Program in Finance, Working Paper Series qt2qb613r5, Research Program in Finance, Institute for Business and Economic Research, UC Berkeley.
    3. Yongheng Deng & John M. Quigley, 2003. "Woodhead Behavior and the Pricing of Residential Mortgages," Working Paper 8616, USC Lusk Center for Real Estate.
    4. Sumit Agarwal & Yongheng Deng & Jia He, 2020. "Time Preferences, Mortgage Choice and Mortgage Default," International Real Estate Review, Global Social Science Institute, vol. 23(2), pages 777-813.
    5. Yongheng Deng & Andrey D. Pavlov & Lihong Yang, 2004. "Spatial Heterogeneity in Mortgage Terminations by Refinance, Sale and Default," Working Paper 8602, USC Lusk Center for Real Estate.
    6. Sumit Agarwal & Yongheng Deng & Jia He, 2020. "Time Preferences, Mortgage Choice and Mortgage Default," International Real Estate Review, Global Social Science Institute, vol. 23(2), pages 151-187.
    7. William B English, 2002. "Interest rate risk and bank net interest margins," BIS Quarterly Review, Bank for International Settlements, December.
    8. Chris Downing & Richard Stanton & Nancy Wallace, 2003. "An empirical test of a two-factor mortgage valuation model: how much do house prices matter?," Finance and Economics Discussion Series 2003-42, Board of Governors of the Federal Reserve System (U.S.).

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