Anpassungsfähigkeit und Resilienz des Finanzsystems
Diese Forschungsgruppe untersucht kritische Aspekte der Anpassungsfähigkeit und Widerstandsfähigkeit von Finanzsystemen. Sie analysiert die Auswirkungen von Naturkatastrophen auf Finanzsysteme, die Auswirkungen politischer Präferenzen für die grüne Transformation und die Bedeutung von Kultur in den Volkswirtschaften.
Forschungscluster
Finanzresilienz und RegulierungIhr Kontakt

- Abteilung Finanzmärkte
PROJEKTE
08.2022 ‐ 07.2025
OVERHANG: Schuldenüberhang und grüne Investitionen – die Rolle von Banken für den klimafreundlichen Umgang mit emissionsintensiven Anlagenvermögen
Bundesministerium für Bildung und Forschung (BMBF)
Ziel von OVERHANG ist es, die Rolle von Banken für den klimafreundlichen Umgang mit emissionsintensiven Anlagevermögen zu untersuchen. Hierdurch sollen politikrelevante Erkenntnisse zu Finanzregulierung, staatlich kontrollierter Kreditvergabe und Finanzstabilität identifiziert sowie eine Sensibilisierung der verschuldeten Akteurinnen und Akteuren erreicht werden.
Das Projekt wird vom Bundesministerium für Bildung und Forschung (BMBF) finanziert.
01.2015 ‐ 12.2019
Interactions between Bank-specific Risk and Macroeconomic Performance
Deutsche Forschungsgemeinschaft (DFG)
07.2016 ‐ 12.2018
Relationship Lenders and Unorthodox Monetary Policy: Investment, Employment, and Resource Reallocation Effects
Leibniz-Gemeinschaft
We combine a number of unique and proprietary data sources to measure the impact of relationship lenders and unconventional monetary policy during and after the European sovereign debt crisis on the real economy. Establishing systematic links between different research data centers (Forschungsdatenzentren, FDZ) and central banks with detailed micro-level information on both financial and real activity is the stand-alone proposition of our proposal. The main objective is to permit the identification of causal effects, or their absence, regarding which policies were conducive to mitigate financial shocks and stimulate real economic activities, such as employment, investment, or the closure of plants.
Referierte Publikationen

Softening Competition by Inducing Switching in Credit Markets
in: Journal of Industrial Economics, Nr. 1, 2004
Abstract
We show that competing banks relax overall competition by inducing borrowers to switch lenders. We illustrate our findings in a two-period model with adverse selection where banks strategically commit to disclosing borrower information. By doing this, they invite rivals to poach their first-period market. Disclosure of borrower information increases the rival's second-period profits. This dampens competition for serving the first-period market.

Bank-Firm Relationships and International Banking Markets
in: International Journal of the Economics of Business, Nr. 3, 2002
Abstract
This paper reviews how long-term relationships between firms and banks shape the structure and integration of banking markets worldwide. Bank relationships arise to span informational asymmetries that are endemic in financial markets. Firm-bank relationships not only entail specific benefits and costs for both the engaged firms and banks, but also directly affect the structure of banking markets. In particular, the sunk cost of screening and monitoring activities and the 'informational capital' collected by the incumbent banks may act as a barrier to entry. The intensity of the existing firm-bank relationships will determine the height of this barrier and shape the structure of international banking markets. For example, in Scandinavia where firms maintain few and strong relationships, foreign banks may only be able to enter successfully through mergers and acquisitions. On the other hand, Southern European firms maintain many bank relationships. Therefore, banks may consider entering Southern European banking markets through direct investment.

Attribute Dependence and the Provision of Quality
in: Regional Science and Urban Economics, Nr. 5, 2001
Abstract
Often a quality improvement necessitates modifications of varietal product features. This paper studies firms’ incentives to provide quality when this decision affects the goods’ degree of perceived horizontal differentiation. We find that the quality level hinges crucially on the interaction between the quality and the varietal product attribute. We examine the outcome of a game where firms decide on quality and price relative to what a social planner would desire. If the interaction between quality and perceived horizontal differentiation is sufficiently positive, we find for the sequential game ‘quality then price’ that the private incentives to provide quality are excessive relative to the social optimum. As a result the level and the direction of interaction between the attributes determines whether there is excessive or insufficient provision of quality.

On the Incentives to Provide Fuel-Efficient Automobiles
in: Journal of Economics, Nr. 2, 2001
Abstract
We argue that the provision of more fuel-efficient cars necessitates specific aerodynamic shapes. We show that the presence of this technological constraint may reduce the incentives to provide fuel efficiency. In equilibrium, cars become more similar and aerodynamic as fuel prices increase. However, the provided level of fuel efficiency falls short of the social optimal one such that a fuel-economy standard is welfare-enhancing.

Bank Relationships and Firm Profitability
in: Financial Management, Nr. 1, 2001
Abstract
This paper examines how bank relationships affect firm performance. An empirical implication of recent theoretical models is that firms maintaining multiple bank relationships are less profitable than their single-bank peers. We investigate this empirical implication using a data set containing virtually all Norwegian publicly listed firms for the period 1979-1995. We find that profitability is substantially higher if firms maintain only a single bank relationship. We also find that firms replacing a single bank relationship are on average smaller and younger than firms not replacing a single bank relationship.
Arbeitspapiere

Capital Requirements, Market Structure, and Heterogeneous Banks
in: IWH Discussion Papers, Nr. 15, 2022
Abstract
Bank regulators interfere with the efficient allocation of resources for the sake of financial stability. Based on this trade-off, I compare how different capital requirements affect default probabilities and the allocation of market shares across heterogeneous banks. In the model, banks‘ productivity determines their optimal strategy in oligopolistic markets. Higher productivity gives banks higher profit margins that lower their default risk. Hence, capital requirements indirectly aiming at high-productivity banks are less effective. They also bear a distortionary cost: Because incumbents increase interest rates, new entrants with low productivity are attracted and thus average productivity in the banking market decreases.

Covered Bonds and Bank Portfolio Rebalancing
in: Norges Bank Working Papers, Nr. 6, 2021
Abstract
We use administrative and supervisory data at the bank and loan level to investigate the impact of the introduction of covered bonds on the composition of bank balance sheets and bank risk. Covered bonds, despite being collateralized by mortgages, lead to a shift in bank lending from mortgages to corporate loans. Young and low-rated firms in particular receive more credit, suggesting that overall credit risk increases. At the same time, we find that total balance sheet liquidity increases. We identify the channel in a theoretical model and provide empirical evidence: Banks with low initial liquidity and banks with sufficiently high risk-adjusted return on firm lending drive the results.

Lender-specific Mortgage Supply Shocks and Macroeconomic Performance in the United States
in: IWH Discussion Papers, Nr. 3, 2021
Abstract
This paper provides evidence for the propagation of idiosyncratic mortgage supply shocks to the macroeconomy. Based on micro-level data from the Home Mortgage Disclosure Act for the 1990-2016 period, our results suggest that lender-specific mortgage supply shocks affect aggregate mortgage, house price, and employment dynamics at the regional level. The larger the idiosyncratic shocks to newly issued mortgages, the stronger are mortgage, house price, and employment growth. While shocks at the level of shadow banks significantly affect mortgage and house price dynamics, too, they do not matter much for employment.

Trade Shocks, Credit Reallocation and the Role of Specialisation: Evidence from Syndicated Lending
in: IWH Discussion Papers, Nr. 15, 2020
Abstract
This paper provides evidence that banks cut lending to US borrowers as a consequence of a trade shock. This adverse reaction is stronger for banks with higher ex-ante lending to US industries hit by the trade shock. Importantly, I document large heterogeneity in banks‘ reaction depending on their sectoral specialisation. Banks shield industries in which they are specialised in and at the same time reduce the availability of credit to industries they are not specialised in. The latter is driven by low-capital banks and lending to firms that are themselves hit by the trade shock. Banks‘ adjustments have adverse real effects.

Spillovers of Asset Purchases Within the Real Sector: Win-Win or Joy and Sorrow?
in: IWH Discussion Papers, Nr. 22, 2019
Abstract
Events which have an adverse or positive effect on some firms can disseminate through the economy to firms which are not directly affected. By exploiting the first large sovereign bond purchase programme of the ECB, this paper investigates whether more lending to some firms spill over to firms in the surroundings of direct beneficiaries. Firms operating in the same industry and region invest less and reduce employment. The paper shows the importance to consider spillover effects when assessing unconventional monetary policies: Differences between treatment and control groups can be entirely attributed to negative effects on the control group.