Risk Shifting in Financial Markets and Sustainable Finance

The contemporary literature on financial intermediation suggests that banks play an important role in the transition towards a sustainable economy. The research group ‘Risk Shifting in Financial Markets and Sustainable Finance’ contributes to this debate by studying lenders' risk shifting incentives, their choices in supporting sustainable business, and how sustainable finance and legal innovations affect firms and households.

First, we analyze how banks respond to climate transition risks. Specifically, we investigate whether banks manage these risks by offloading loans to environmentally harmful firms or by incorporating sustainability pricing provisions into loan contracts. Our ongoing research delves into the role of banking supervision in facilitating the transition to net-zero, specifically by assessing the impact of climate stress tests on banks' lending practices. We also examine how depositors, firms, and financial institutions manage various forms of biodiversity risk.

Second, we illustrate the choice between risk pricing and risk shifting through securitisation by financial institutions. From a household finance perspective, we discuss how mortgage fore­closure laws and mortgage pricing policies should be designed to mitigate moral hazard of lenders and borrowers. We also highlight the effect of zombie mortgage laws on banks and non-bank lenders, and the implications arising for housing markets.

Another line of research aims to establish evidence of how financial regulation contributes to securitisation booms, which are considered to be at the root of the recent boom and bust cycles in housing markets. Specifically, we shed light on how banking deregulation and financial develop­ment increase the probability of a bank operating an originate-to-distribute model in the lead up to the financial crisis that started in 2007. 

Finally, the research group investigates the role of financial institutions in supporting firms to mitigate risk from supply chain disruptions triggered by the Covid-19 pandemic.

Research Cluster
Financial Resilience and Regulation

Your contact

Professor Huyen Nguyen, PhD
Professor Huyen Nguyen, PhD
- Department Financial Markets
Send Message +49 345 7753-756 Personal page LinkedIn profile

Refereed Publications

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Too Connected to Fail? Inferring Network Ties from Price Co-movements

Jakob Bosma Michael Koetter Michael Wedow

in: Journal of Business and Economic Statistics, Vol. 37 (1), 2019

Abstract

We use extreme value theory methods to infer conventionally unobservable connections between financial institutions from joint extreme movements in credit default swap spreads and equity returns. Estimated pairwise co-crash probabilities identify significant connections among up to 186 financial institutions prior to the crisis of 2007/2008. Financial institutions that were very central prior to the crisis were more likely to be bailed out during the crisis or receive the status of systemically important institutions. This result remains intact also after controlling for indicators of too-big-to-fail concerns, systemic, systematic, and idiosyncratic risks. Both credit default swap (CDS)-based and equity-based connections are significant predictors of bailouts. Supplementary materials for this article are available online.

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Legal Insider Trading and Stock Market Liquidity

Hans Degryse Frank de Jong Jérémie Lefebvre

in: De Economist, Vol. 164 (1), 2016

Abstract

This paper assesses the impact of legal trades by corporate insiders on the liquidity of the firm’s stock. For this purpose, we analyze two liquidity measures and one information asymmetry measure. The analysis allows us to study as well the effect of a change in insider trading regulation, namely the implementation of the Market Abuse Directive (European Union Directive 2003/6/EC) on the Dutch stock market. The first set of results shows that, in accordance with theories of asymmetric information, the intensity of legal insider trading in a given company is positively related to the bid-ask spread and to the information asymmetry measure. We also find that the Market Abuse Directive did not reduce significantly this effect. Secondly, analyzing liquidity and information asymmetry around the days of legal insider trading, we find that small and large capitalization stocks see their bid-ask spread and the permanent price impact increase when insiders trade. For mid-cap stocks, only the permanent price impact increases. Finally, we could not detect a significant improvement of these results following the change in regulation.

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Working Papers

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Climate Stress Tests, Bank Lending, and the Transition to the Carbon-neutral Economy

Larissa Fuchs Huyen Nguyen Trang Nguyen Klaus Schaeck

in: IWH Discussion Papers, No. 9, 2024

Abstract

We ask if bank supervisors’ efforts to combat climate change affect banks’ lending and their borrowers’ transition to the carbon-neutral economy. Combining information from the French supervisory agency’s climate pilot exercise with borrowers’ emission data, we first show that banks that participate in the exercise increase lending to high-carbon emitters but simultaneously charge higher interest rates. Second, participating banks collect new information about climate risks, and boost lending for green purposes. Third, receiving credit from a participating bank facilitates borrowers’ efforts to improve environmental performance. Our findings establish a hitherto undocumented link between banking supervision and the transition to net-zero.

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Labor Market Polarization and Student Debt

Sanket Korgaonkar Elena Loutskina Constantine Yannelis

in: SSRN Working Paper, 2024

Abstract

This paper uses a new empirical design to explore how labor market polarization affects individuals’ incentive to pursue education funded on the margin by student debt. We argue that the labor market polarization–where automation replaces mid-skill and mid-education-level job–changes the marginal benefits of education and training and sharpens incentives to incur student debt. We advance a new measure of labor market polarizations that allows to capture the heterogeneity of this phenomena across geographies and time. Using this measure, we find that U.S. CBSAs that experience deeper labor market polarization see an increase in student debt balances and in the number of people pursuing student debt. On average, the decline in middle-skill jobs and wages has little effect on individuals’ ability to pay down existing student debt. The effects are most pronounced in ZIP codes with lower average credit scores, lower incomes, and higher share of the minority population.

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To Rent or not to Rent: A Household Finance Perspective on Berlin's Short-term Rental Regulation

Antonios Mavropoulos

in: IWH Discussion Papers, No. 1, 2021

Abstract

With the increasing concerns that accompany the rising trends of house sharing economies, regulators impose new laws to counteract housing supply scarcity. In this paper, I investigate whether the ban on short-term entire house listings activated in Berlin in May 2016 had any adverse effects from a household finance perspective. More specifically, I derive short-term rental income and counter-factually compare it with long-term rental income to find that the ban, by decreasing the supply of short-term housing, accelerated short-term rental income but did not have any direct effect on long-term rental income. Commercial home-owners therefore would find renting on the short-term market to be financially advantageous.

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Housing Consumption and Macroprudential Policies in Europe: An Ex Ante Evaluation

Antonios Mavropoulos Qizhou Xiong

in: IWH Discussion Papers, No. 17, 2018

Abstract

In this paper, we use the panel of the first two waves of the Household Finance and Consumption Survey by the European Central Bank to study housing demand of European households and evaluate potential housing market regulations in the post-crisis era. We provide a comprehensive account of the housing decisions of European households between 2010 and 2014, and structurally estimate the housing preference of a simple life-cycle housing choice model. We then evaluate the effect of a tighter LTV/LTI regulation via counter-factual simulations. We find that those regulations limit homeownership and wealth accumulation, reduces housing consumption but may be welfare improving for the young households.

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