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Report
Specialization in Banking
Using highly detailed data on the loan portfolios of large U.S. banks, we document that these banks "specialize" by concentrating their lending disproportionately into one industry. This specialization improves a bank’s industry-specific knowledge and allows it to offer generous loan terms to borrowers, especially to firms with access to alternate sources of funding and during periods of greater nonbank lending. Superior industry-specific knowledge is further reflected in better loan and, ultimately, bank performance. Banks concentrate more on their primary industry in times of instability ...
Working Paper
The Heterogeneous Impact of Referrals on Labor Market Outcomes
We document a new set of facts regarding the impact of referrals on labor market outcomes. Our results highlight the importance of distinguishing between different types of referrals—those from family and friends and those from business contacts—and different occupations. Then we develop an on-the-job search model that incorporates referrals and calibrate the model to key moments in the data. The calibrated model yields new insights into the roles played by different types of referrals in the match formation process and provides quantitative estimates of the effects of referrals on ...
Speech
The theory and practice of supervision--Remarks at the SIFMA Internal Auditors Society Education Luncheon, Harvard Club, New York City
Remarks at the SIFMA Internal Auditors Society Education Luncheon, Harvard Club, New York City.
Report
Uncertain booms and fragility
I develop a framework of the buildup and outbreak of financial crises in an asymmetric information setting. In equilibrium, two distinct economic states arise endogenously: ?normal times,? periods of modest investment, and ?booms,? periods of expansionary investment. Normal times occur when the intermediary sector realizes moderate investment opportunities. Booms occur when the intermediary sector realizes many investment opportunities, but also occur when it realizes very few opportunities. As a result, investors face greater uncertainty in booms. During a boom, subsequent arrival of ...
Working Paper
Mixed Signals: Investment Distortions with Adverse Selection
We study how adverse selection distorts equilibrium investment allocations in a Walrasian credit market with two-sided heterogeneity. Representative investor and partial equilibrium economies are special cases where investment allocations are distorted above perfect information allocations. By contrast, the general setting features a pecuniary externality that leads to trade and investment allocations below perfect information levels. The degree of heterogeneity between informed agents' type governs the direction of the distortion. Moreover, contracts that complete markets dampen the impact ...
Working Paper
Are Lemons Sold First? Dynamic Signaling in the Mortgage Market
A central result in the theory of adverse selection in asset markets is that informed sellers can signal quality and obtain higher prices by delaying trade. This paper provides some of the first evidence of a signaling mechanism through trade delays using the residential mortgage market as a laboratory. We find a strong relationship between mortgage performance and time to sale for privately securitized mortgages. Additionally, deals made up of more seasoned mortgages are sold at lower yields. These effects are strongest in the "Alt-A" segment of the market, where mortgages are often sold ...
Report
The Heterogeneous Impact of Referrals on Labor Market Outcomes
We document a new set of facts regarding the impact of referrals on labor market outcomes. Our results highlight the importance of distinguishing between different types of referrals—those from family and friends and those from business contacts—and different occupations. Then we develop an on-the-job search model that incorporates referrals and calibrate the model to key moments in the data. The calibrated model yields new insights into the roles played by different types of referrals in the match formation process, and provides quantitative estimates of the effects of referrals on ...
Discussion Paper
The Fed Funds Market during the 2007-09 Financial Crisis
The U.S. federal funds market played a central role in the financial system during the 2007-09 crisis, because it was the market which provided banks with immediate liquidity, even late in the day. Interpreting changes in fed funds rates is notoriously difficult, however, as many of the economic drivers behind the rates are simultaneously changing. In this post, I highlight results from a working paper which untangles the impact of these economic drivers and measures their respective effects on the marketplace using data over a sample period leading up to and during the financial crisis. The ...
Report
The Federal Funds Market over the 2007-09 Crisis
This paper measures how the 2007-09 financial crisis affected the U.S. federal funds market. I accomplish this by developing and estimating a structural model of this market, in which intermediation plays a crucial role and borrowing banks differ in their unobserved probability of default. The estimates imply that the expected probability of default increases 0.29 percentage point at the start of the crisis in mid-2007 and then gains a further 1.91 percentage points after the bankruptcy of Lehman Brothers. These increases do not cause a market freeze, however, because simultaneously there is ...
Working Paper
Post-crisis Signals in Securitization: Evidence from Auto ABS
We find significant evidence of asymmetric information and signaling in post-crisis offerings in the auto asset-backed securities (ABS) market. Using granular regulatory reporting data, we are able to directly measure private information and quantify its effect on signaling and pricing. We show that lenders "self-finance'' unobservably higher-quality loans by holding these loans for longer periods to signal private information. This signal is priced in initial offerings of auto ABS and accurately predicts ex-post loan performance. We also demonstrate that our results are robust to exogenous ...