Patricia C. Mosser

An International Survey of Stress Tests

In the summer of 2000, central banks from the Group of Ten countries surveyed large international banks about their use of stress tests_a risk management tool that measures a firms exposure to extreme movements in asset prices. The survey findings highlight the risks that most concern financial institutions and clarify how these institutions use stress tests in their overall risk management programs.

A Private Lender Cooperative Model for Residential Mortgage Finance

We describe a set of six design principles for the reorganization of the U.S. housing finance system and apply them to one model for replacing Fannie Mae and Freddie Mac that has so far received frequent mention but little sustained analysis – the lender cooperative utility. We discuss the pros and cons of such a model and propose a method for organizing participation in a mutual loss pool and an explicit, priced government insurance mechanism. We also discuss how these principles and this model are consistent with preserving the “to-be-announced,” or TBA, market – particularly if the fixed-rate mortgage remains a focus of public policy.

The Capital Structure and Governance of a Mortgage Securitization Utility

We explore the capital structure and governance of a mortgage-insuring securitization utility operating with government reinsurance for systemic or “tail” risk. The structure we propose for the replacement of the GSEs focuses on aligning incentives for appropriate pricing and transfer of mortgage risks across the private sector and between the private sector and the government. We present the justification and mechanics of a vintage-based capital structure, and assess the components of the mortgage guarantee fee, whose size we find is most sensitive to the required capital ratio and the expected return on that capital. We discuss the implications of selling off some of the utility’s mortgage credit risk to the capital markets and how the informational value of such transactions may vary with the level of risk transfer. Finally, we explore how mutualization could address incentive misalignments arising out of securitization and government insurance, as well as how the governance structure for such a financial market utility could be designed.