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Working Paper
An agency problem in the MBS market and the solicited refinancing channel of large-scale asset purchases
In this paper, we document that mortgage-backed securities (MBS) held by the Federal Reserve exhibit faster principal prepayment rates than MBS held by the rest of the market. Next, we show that this stylized fact persists even when controlling for factors that affect prepayment behavior, and thus determine the MBS that are delivered to the Federal Reserve. After ruling out several potential explanations for this result, we provide evidence that points to an agency problem in the secondary market for MBS, which has not previously been documented, as the most likely explanation for the ...
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 ...
Working Paper
Flood Risk Exposures and Mortgage-Backed Security Asset Performance and Risk Sharing
The distribution of risks for residential real estate, including flood risk, depends largely on how these risks are allocated across individual mortgages and within mortgage-backed securities (MBS). This paper is the first to document how flood risks relate not only to individual mortgage performance and underwriting, but also how flood risks correlate to MBS performance and structure. Across residential mortgages we find that defaults are concentrated among the most flood-prone properties and this risk is somewhat offset by larger down payments and slightly higher mortgage rates. Even when ...
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.