Regulation of International Financial Markets and Banking

The research group "Regulation of International Financial Markets and Banking" analyzes international capital flows and the effects of regulatory changes on financial stability. Financial integration promotes efficient capital allocation and risk sharing but also eases the transmission of shocks across borders.

Banking regulation has accordingly evolved in recent years, yet the full impact of these reforms remains unclear. Hence, the group focuses on two areas:

First, it investigates the drivers of international capital flows and their effects on financial stability. Periods of high financial integration often precede crises with lasting real-economy consequences. The aim is to understand how to ensure stable and effective credit allocation.

Second, it examines how changes in regulation and supervision influence cross-border banking, especially within the context of European integration. This includes evaluating the balance between regulatory harmonization and unintended market distortions.

Two data projects support this research: the International Banking Library, a web-based platform for research exchange with a quarterly newsletter reaching more than 700 subscribers, and the Financial Markets Directives Database, which documents the implementation of key EU financial regulations with a special focus on the European Banking Union. Together, they promote evidence-based policymaking and enhance the group's global visibility.

Research Cluster
Economic Dynamics and Stability

Your contact

Professor Dr Lena Tonzer
Professor Dr Lena Tonzer
- Department Financial Markets
Send Message +49 345 7753-835 Personal page

EXTERNAL FUNDING

10.2021 ‐ 06.2025

Distributional Effects of Macroeconomic Policies in Europe (DEMAP)

Leibniz Association

The project examines how political measures at the level of the European Union, for example the European Recovery Fund, affect inequality between households.

see project's webpage

Professor Dr Lena Tonzer

07.2017 ‐ 12.2022

The Political Economy of the European Banking Union

Causes of national differences in the implementation of the Banking Union and the resulting impact on financial stability.

see project's webpage

Professor Dr Lena Tonzer

01.2015 ‐ 12.2017

Dynamic Interactions between Banks and the Real Economy

Professor Dr Felix Noth

Refereed Publications

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Elevated Uncertainty during the Financial Crisis: Do Effects on Subjective Well-being Differ across European Countries?

Lena Tonzer

in: B.E. Journal of Economic Analysis and Policy, No. 2, 2019

Abstract

This paper focuses on the effect of uncertainty as reflected by financial market variables on subjective well-being. The analysis is based on Eurobarometer surveys, covering 18 countries over the period 2000–2013. Individuals report lower levels of life satisfaction in times of higher uncertainty approximated by stock market volatility. This effect is heterogeneous across respondents: the probability of being unsatisfied is higher for respondents who are older, unemployed, less educated, and live in one of the GIIPS countries of the Euro area. Furthermore, higher uncertainty in combination with a financial crisis increases the probability of reporting low values of life satisfaction.

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Drivers of Systemic Risk: Do National and European Perspectives Differ?

Claudia M. Buch Thomas Krause Lena Tonzer

in: Journal of International Money and Finance, March 2019

Abstract

With the establishment of the Banking Union, the European Central Bank has been granted the power to impose stricter regulations than the national regulator if systemic risks are not adequately addressed at the national level. We ask whether there is a cross-border externality in the sense that a bank’s systemic risk differs when applying a national versus a European perspective. On average, banks’ contribution to systemic risk is similar at the two regional levels, and so is the ranking of banks. Generally, larger banks and banks with a lower share of loans are more systemically important. The effects of these variables are qualitatively but not quantitatively similar at the national versus the European level.

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Political Influence and Financial Flexibility: Evidence from China

Xian Gu Iftekhar Hasan Yun Zhu

in: Journal of Banking and Finance, February 2019

Abstract

This paper investigates how political influence affects firms’ financial flexibility and speed of adjustment toward target leverage ratios. We find that at the macro level, firms in environments with high political advantages, proxied by provincial affiliations with heads of state as well as political status and party rank of provincial leaders, adjust faster. At the micro level, firms that are state-owned, have CPC members as executives, or bear low exposure to changes in political uncertainty adjust faster. When interacted, the micro-level political factors have more significant impact.

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Banks Response to Higher Capital Requirements: Evidence from a Quasi-natural Experiment

Reint E. Gropp Thomas Mosk Steven Ongena Carlo Wix

in: Review of Financial Studies, No. 1, 2019

Abstract

We study the impact of higher capital requirements on banks’ balance sheets and their transmission to the real economy. The 2011 EBA capital exercise is an almost ideal quasi-natural experiment to identify this impact with a difference-in-differences matching estimator. We find that treated banks increase their capital ratios by reducing their risk-weighted assets, not by raising their levels of equity, consistent with debt overhang. Banks reduce lending to corporate and retail customers, resulting in lower asset, investment, and sales growth for firms obtaining a larger share of their bank credit from the treated banks.

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Big Fish in Small Banking Ponds? Cost Advantages and Foreign Affiliate Presences

Michael Koetter Rients Galema

in: Journal of International Money and Finance, 2018

Abstract

We distinguish cost advantage at home from cost advantage vis-à-vis incumbent banks in destination markets to explain the probability of foreign bank affiliate lending. We combine detailed affiliate lending data of all German banks with public bank micro data from 59 destination markets. The likelihood to operate foreign affiliates depends positively on both types of cost advantage. Only cost advantage at home is economically significant. Generally, risk, return, and unobservable bank traits explain a larger share of the variation in foreign affiliate operations. Less profitable, more risky, and larger banks are more likely to operate affiliates abroad.

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Working Papers

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Friend or Foe? Crowdfunding Versus Credit when Banks are Stressed

Daniel Blaseg Michael Koetter

in: IWH Discussion Papers, No. 8, 2015

Abstract

Does bank instability push borrowers to use crowdfunding as a source of external finance? We identify stressed banks and link them to a unique, manually constructed sample of 157 new ventures seeking equity crowdfunding. The sample comprises projects from all German equity crowdfunding platforms since 2011, which we compare with 200 ventures that do not use crowdfunding. Crowdfunding is significantly more likely for new ventures that interact with stressed banks. Innovative funding is thus particularly relevant when conventional financiers are facing crises. But crowdfunded ventures are generally also more opaque and risky than new ventures that do not use crowdfunding.

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Explaining Regional Disparities in Housing Prices across German Districts

Lars Brausewetter Stephan L. Thomsen Johannes Trunzer

in: IZA Institute of Labor Economics, March 2022

Abstract

Over the last decade, German housing prices have increased unprecedentedly. Drawing on quality-adjusted housing price data at the district level, we document large and increasing regional disparities: growth rates were higher in 1) the largest seven cities, 2) districts located in the south, and 3) districts with higher initial price levels. Indications of price bubbles are concentrated in the largest cities and in the purchasing market. Prices seem to be driven by the demand side: increasing population density, higher shares of academically educated employees and increasing purchasing power explain our findings, while supply remained relatively constrained in the short term.

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