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- W3123628510 abstract "Mortgage terminations arise because borrowers exercise options. This paper investigates the apparently irrational behavior of those borrowers who do not terminate their mortgages even when the exercise value of the option is deeply in the money. We develop an option-based empirical model to analyze this phenomenon -- the behavior of irrational woodheads. Of course we do not observe woodheads explicitly in any body of data. Instead, we analyze the correlates of unobserved heterogeneity within a large sample of mortgage holders. We develop an error correction maximum likelihood (ECML) estimator using martingale transforms to estimate the competing risks of mortgage prepayment and default, recognizing unobserved heterogeneity which is due in part to the behavior of woodheads. The extended model is clearly superior to alternatives on statistical grounds. We then analyze the economic implications of this more powerful model. We analyze the predictions of the model for the valuation and pricing of mortgage pools and mortgage-backed securities. Based upon an extensive Monte Carlo simulation, we find that the ECML model yields prices for seasoned mortgage pools that deviate by 0.3 to almost 3.0 percent from more primitive estimates. The results indicate the empirical importance of heterogeneity and the implications of non-optimizing behavior for the valuation and pricing of mortgages and mortgage-backed securities." @default.
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- W3123628510 date "2004-06-29" @default.
- W3123628510 modified "2023-09-27" @default.
- W3123628510 title "Woodhead Behavior and the Pricing of Residential Mortgages" @default.
- W3123628510 hasPublicationYear "2004" @default.
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