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Keywords:MBS 

Discussion Paper
The Dodd-Frank Act’s Potential Effects on the Credit Rating Industry

Credit rating agencies have been widely criticized in recent years for the poor performance of their ratings on mortgage-backed securities (MBS) and other structured-finance bonds. In response to the concerns of investors and other market participants, the 2010 Dodd-Frank Act incorporates a range of reforms likely to significantly reshape the rating industry. In this post, we discuss these reforms and their implications for investors, regulators, and the rating agencies themselves.
Liberty Street Economics , Paper 20120215

Report
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 ...
Staff Reports , Paper 644

Report
Defragmenting Markets: Evidence from Agency MBS

Agency mortgage-backed securities (MBS) issued by Fannie Mae and Freddie Mac have historically traded in separate forward markets. We study the consequences of this fragmentation, showing that market liquidity endogenously concentrated in Fannie Mae MBS, leading to higher issuance and trading volume, lower transaction costs, higher security prices, and a lower primary market cost of capital for Fannie Mae. We then analyze a change in market design—the Single Security Initiative—which consolidated Fannie Mae and Freddie Mac MBS trading into a single market in June 2019. We find that ...
Staff Reports , Paper 965

Discussion Paper
How the Fed Changes the Size of Its Balance Sheet: The Case of Mortgage-Backed Securities

In our previous post, we considered balance sheet mechanics related to the Federal Reserve's purchase and redemption of Treasury securities. These mechanics are fairly straightforward and help to illustrate the basic relationships among actors in the financial system. Here, we turn to transactions involving agency mortgage-backed securities (MBS), which are somewhat more complicated. We focus particularly on what happens when households pay down their mortgages, either through regular monthly amortizations or a large payment covering some or all of the outstanding balance, as might occur with ...
Liberty Street Economics , Paper 20170711

Discussion Paper
How Do the Fed's MBS Purchases Affect Credit Allocation?

It is sometimes said that the Federal Reserve should not engage in “credit allocation.” But what does credit allocation actually mean? And how do current Fed policies affect the allocation of credit? In this post, we describe two separate ideas often associated with credit allocation. The first idea is that the Fed should not take credit risk, which taxpayers would ultimately have to bear. The second idea is that the Fed’s actions should not influence the flow of credit to particular sectors. We consider whether the Fed’s holdings of agency mortgage-backed securities (MBS) could ...
Liberty Street Economics , Paper 20180806

Report
Dealers and the Dealer of Last Resort: Evidence from the Agency MBS Markets in the COVID-19 Crisis

When market disruptions started in March 2020, dealers maintained the usual liquidity provision in the agency MBS market by taking cash inventory and hedging inventory risk with forward contracts. However, cash and forward prices significantly diverged and began to converge only after the Federal Reserve deployed nonstandard purchase operations to promptly take MBS off dealers’ balance sheets. Further cross-dealer analyses point to supplemental leverage ratio requirements as major constraints on dealers’ balance sheets. Customers’ selling increased when price divergence reverted, ...
Staff Reports , Paper 933

Report
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 ...
Staff Reports , Paper 466

Working Paper
How the Federal Reserve's Large-Scale Asset Purchases (LSAPs) Influence Mortgage-Backed Securities (MBS) Yields and U.S. Mortgage Rates

We conduct an empirical analysis of the Federal Reserve's large-scale asset purchases (LSAPs) on MBS yields and mortgage rates. The Federal Reserve's accumulation of MBS and Treasury securities lowered MBS yields and mortgage rates by more than what would have been suggested by changes in market expectations alone, suggesting that portfolio rebalancing effects of LSAPs are an important consideration for monetary policy transmission. Our estimates also suggest that the Federal Reserve must hold a substantial market share of agency MBS or of Treasury securities to significantly lower MBS yields ...
Finance and Economics Discussion Series , Paper 2014-12

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