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Journal of Finance Vol. 76 No. 2 2021

Financial Fragility with SAM?

Daniel L. Greenwald1,2,3,4,5,6,7,8,9; Tim Landvoigt1,2,3,4,5,6,7,8,9; Stijn Van Nieuwerburgh

1 HEC Montréal · 2 Conference Board · 3 Federal Reserve Board of Governors · 4 University of Chicago · 5 Federal Reserve Bank of Philadelphia · 6 Massachusetts Institute of Technology · 7 Federal Reserve Bank of St. Louis · 8 University of Pennsylvania · 9 Bank of Canada

open access

Abstract

Shared appreciation mortgages (SAMs) feature mortgage payments that adjust with house prices. They are designed to stave off borrower default by providing payment relief when house prices fall. Some argue that SAMs may help prevent the next foreclosure crisis. However, home owners' gains from payment relief are mortgage lenders' losses. A general equilibrium model in which financial intermediaries channel savings from saver to borrower households shows that indexation of mortgage payments to aggregate house prices increases financial fragility, reduces risk‐sharing, and leads to expensive financial sector bailouts. In contrast, indexation to local house prices reduces financial fragility and improves risk‐sharing.

DOI
10.1111/jofi.12992
Volume
76
Issue
2
Pages
651-706
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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