Securitization of Mortgage Debt, Asset Prices and International Risk Sharing
47 Pages Posted: 14 Jul 2008 Last revised: 22 Mar 2009
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Securitization of Mortgage Debt, Asset Prices and International Risk Sharing
Securitization of Mortgage Debt, Asset Prices and International Risk Sharing
Date Written: December 1, 2008
Abstract
We explore the impact of mortgage securitization on the international diversification of macroeconomic risk. By making mortgage-related risks internationally tradeable, securitization contributes considerably to better international consumption risk sharing: we find that countries with the most highly developed markets for securitized mortgage debt have consumption responses to a typical idiosyncratic business cycle shock that are 20-30 percent less volatile than those experienced by countries that do not allow for mortgage securitization. Our results are based on quarterly data from a panel of 16 industrialized countries and cover the sample period 1971-2008 Q1. They are robust to a range of controls for other aspects of financial globalization, international differences in the structure of housing markets and the financial system etc. Against the backdrop of the subprime crisis, these findings inevitably raise the question whether securitization could not just facilitate risk sharing in tranquil times but that it actually fails to provide international insurance in severe crisis periods. Indeed, we find that international risk sharing decreases in global asset price downturns and increases in booms. But we do not find evidence that countries with more developed securitization markets are systematically more exposed to these fluctuations in the extent to which risk can be shared across national boundaries.
Keywords: Financial globalization, international risk sharing, home bias, securitization, mortgage markets, asset prices, international business cycles
JEL Classification: F36, F37, F41, G15, G21
Suggested Citation: Suggested Citation
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