Document Type
Discussion Paper
Publication Date
12-1-2017
CFDP Number
2116
CFDP Pages
64
Journal of Economic Literature (JEL) Code(s)
C63, D11, D14, D92, G13, G21, R31
Abstract
This paper studies the Continuous Workout Mortgage (CWM), a two in one product: a fixed rate home loan coupled with negative equity insurance, to advocate its viability in mitigating financial fragility. In order to tackle the many issues that CWMs embrace, we perform a range of tasks. We optimally price CWMs and take a systemic market-based approach, stipulating that mortgage values and payments should be linked to housing prices and adjusted downward to prevent negative equity. We illustrate that amortizing CWMs can be the efficient home financing choice for many households. We price CWMs as American option style, defaulting debt in conjunction with prepayment within a continuous time, analytic framework. We introduce random prepayments via the intensity approach of Jarrow and Turnbull (1995). We also model the optimal embedded option to default whose exercise is motivated by decreasing random house prices. We adapt the Barone-Adesi and Whaley (1987) (BAW) approach to work within amortizing mortgage context. We derive new closed-form and new analytical approximation methodologies which apply both for pricing CWMs, as well as for pricing the standard US 30-year Fixed Rate Mortgage (FRM).
Recommended Citation
Shiller, Robert J.; Wojakowski, Rafal M.; Ebrahim, M. Shahid; and Shackleton, Mark B., "Continuous Workout Mortgages: Efficient Pricing and Systemic Implications" (2017). Cowles Foundation Discussion Papers. 161.
https://elischolar.library.yale.edu/cowles-discussion-paper-series/161