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Jel Classification:D53 

Working Paper
Villains or Scapegoats? The Role of Subprime Borrowers in Driving the U.S. Housing Boom

An expansion in mortgage credit to subprime borrowers is widely believed to have been a principal driver of the 2002?06 U.S. house price boom. Contrary to this belief, we show that the house price and subprime booms occurred in different places. Counties with the largest home price appreciation between 2002 and 2006 had the largest declines in the share of purchase mortgages to subprime borrowers. We also document that the expansion in speculative mortgage products and underwriting fraud was not concentrated among subprime borrowers.
FRB Atlanta Working Paper , Paper 2018-10

Working Paper
Technological innovation in mortgage underwriting and the growth in credit, 1985–2015

The application of information technology to finance, or ?fintech,? is expected to revolutionize many aspects of borrowing and lending in the future, but technology has been reshaping consumer and mortgage lending for many years. During the 1990s, computerization allowed mortgage lenders to reduce loan-processing times and largely replace human-based assessments of credit risk with default predictions generated by sophisticated empirical models. Debt-to-income ratios at origination add little to the predictive power of these models, so the new automated underwriting systems allowed higher ...
Working Papers , Paper 19-11

Working Paper
Technological Innovation in Mortgage Underwriting and the Growth in Credit: 1985-2015

The application of information technology to finance, or ?fintech,? is expected to revolutionize many aspects of borrowing and lending in the future, but technology has been reshaping consumer and mortgage lending for many years. During the 1990s computerization allowed mortgage lenders to reduce loan-processing times and largely replace human-based assessment of credit risk with default predictions generated by sophisticated empirical models. Debt-to-income ratios at origination add little to the predictive power of these models, so the new automated underwriting systems allowed higher ...
Working Papers (Old Series) , Paper 1816

Report
Risk Loving and Fat Tails in the Wealth Distribution

We study the dynamic properties of the wealth distribution in an overlapping generations model with warm-glow bequests and heterogeneous attitudes towards risk. Some dynasties of agents are risk averters, and others are risk lovers. Agents can invest in two types of Lucas trees. The two types of trees are symmetric in the sense that one type has a high return in states where the other has a return of zero. This symmetry allows risk averters to perfectly ensure their future income and eliminates aggregate uncertainty in the model. Furthermore, risk lovers take extreme portfolio positions, ...
Staff Report , Paper 662

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 ...
Finance and Economics Discussion Series , Paper 2019-044

Working Paper
Villains or Scapegoats? The Role of Subprime Borrowers in Driving the U.S. Housing Boom

An expansion in mortgage credit to subprime borrowers is widely believed to have been a principal driver of the 2002–2006 U.S. house price boom. By contrast, this paper documents a robust, negative correlation between the growth in the share of purchase mortgages to subprime borrowers and house price appreciation at the county-level during this time. Using two different instrumental variables approaches, we also establish causal evidence that house price appreciation lowered the share of purchase loans to subprime borrowers. Further analysis using micro-level credit bureau data shows that ...
Working Papers , Paper 2013

Report
Rollover risk as market discipline: a two-sided inefficiency

Why does the market discipline that financial intermediaries face seem too weak during booms and too strong during crises? This paper shows in a general equilibrium setting that rollover risk as a disciplining device is effective only if all intermediaries face purely idiosyncratic risk. However, if assets are correlated, a two-sided inefficiency arises: Good aggregate states have intermediaries taking excessive risks, while bad aggregate states suffer from costly fire sales. The driving force behind this inefficiency is an amplifying feedback loop between asset values and market discipline. ...
Staff Reports , Paper 597

Working Paper
Dealer costs and customer choice

We introduce a model to explain how an increase in intermediation costs leads to structural changes in the corporate bond market. We state three facts on corporate bond markets after the Dodd-Frank act: (1) an increase in customer liquidity provision through prearranged matches, (2) a paradoxical decrease in measured illiquidity, and (3) an increase in the illiquidity component on the yield spread. Investors take longer to finish a trade and require higher illiquidity premium even though measured illiquidity decreased. We introduce a search and matching model which explains these facts. It ...
Working Paper , Paper 23-13

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