Correlation Scenarios and Correlation Stress Testing
Natalie Packham, Fabian Wöbbeking
Journal of Economic Behavior and Organization,
January
2023
Abstract
We develop a general approach for stress testing correlations of financial asset portfolios. The correlation matrix of asset returns is specified in a parametric form, where correlations are represented as a function of risk factors, such as country and industry factors. A sparse factor structure linking assets and risk factors is built using Bayesian variable selection methods. Regular calibration yields a joint distribution of economically meaningful stress scenarios of the factors. As such, the method also lends itself as a reverse stress testing framework: using the Mahalanobis distance or Highest Density Regions (HDR) on the joint risk factor distribution allows to infer worst-case correlation scenarios. We give examples of stress tests on a large portfolio of European and North American stocks.
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15.12.2022 • 30/2022
Ökonomen prüfen Wirkung der Kohlemilliarden
Mit rund 40 Milliarden Euro unterstützt der Bund drei große Braunkohlereviere und weitere zehn Regionen mit Steinkohlekraftwerken, die den Ausstieg aus der Kohleverstromung verkraften müssen. Wird das Geld sinnvoll genutzt? Das untersuchen die beiden Leibniz-Institute für Wirtschaftsforschung in Halle und Essen, IWH und RWI, in einer großen Evaluierung.
Oliver Holtemöller
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Trust and Contracting with Foreign Banks: Evidence from China
Desheng Yin, Iftekhar Hasan, Liuling Liu, Haizhi Wang
Journal of Asian Economics,
December
2022
Abstract
We empirically investigate whether firms doing business in regions characterized as having high social trust receive preferential treatment on loan contractual terms by foreign banks. Tracing cross-border syndicated lending activities in China, we document that firms located in provinces with higher social trust scores obtain significantly low costs of bank loans and experience less stringent collateral requirement. To address the potential endogeneity issues, we adopt an instrumental variable approach and a two-sided matching model, and report consistent results. We also estimate a system of three equations through three-stage-least square estimator to accommodate the joint determination of price and non-price terms in loan contracts. In addition, we find that the effect of social trust on cost of bank loans is more prominent for firms located in provinces with relatively less developed formal institutions.
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Where to Go? High-skilled Individuals’ Regional Preferences
Sabrina Jeworrek, Matthias Brachert
IWH Discussion Papers,
Nr. 27,
2022
Abstract
We conduct a discrete choice experiment to investigate how the location of a firm in a rural or urban region affects job attractiveness and contributes to the spatial sorting of university students and graduates. We characterize the attractiveness of a location based on several dimensions (social life, public infrastructure, connectivity) and combine this information with an urban or rural attribution. We also vary job design as well as contractual characteristics of the job. We find that job offers from companies in rural areas are generally considered less attractive. This is true regardless of the attractiveness of the region. The negative perception is particularly pronounced among persons with urban origin and singles. These persons rate job offers from rural regions significantly worse. In contrast, high-skilled individuals who originate from rural areas as well as individuals with partners and kids have no specific preference for jobs in urban or rural areas.
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Real Estate Transaction Taxes and Credit Supply
Michael Koetter, Philipp Marek, Antonios Mavropoulos
IWH Discussion Papers,
Nr. 26,
2022
Abstract
We exploit staggered real estate transaction tax (RETT) hikes across German states to identify the effect of house price changes on mortgage credit supply. Based on approximately 33 million real estate online listings, we construct a quarterly hedonic house price index (HPI) between 2008:q1 and 2017:q4, which we instrument with state-specific RETT changes to isolate the effect on mortgage credit supply by all local German banks. First, a RETT hike by one percentage point reduces HPI by 1.2%. This effect is driven by listings in rural regions. Second, a 1% contraction of HPI induced by an increase in the RETT leads to a 1.4% decline in mortgage lending. This transmission of fiscal policy to mortgage credit supply is effective across almost the entire bank capitalization distribution.
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Business Cycle Characteristics of Mediterranean Economies: a Secular Trend and Cycle Dynamics Perspective
Anna Solms, Bernd Süssmuth
International Economics and Economic Policy,
October
2022
Abstract
This study analyzes business cycle characteristics for all 20 major contemporaneous economies bordering the Mediterranean Sea based on annual real gross domestic product series for the period from 1960 to 2019. The region we investigate corresponds to the Mare Internum region of the Imperial Roman Empire during the Nerva-Antonine and early Severan dynasty, i.e., at the time of the maximum extent of the Roman Empire around 100 to 200 CE. The covered area encircles the Mediterranean, including economies now belonging to the European Union as well as acceding countries, Turkey, and the Middle East and North African economies. Using a components-deviation-cycle approach, we assess level trends and relative volatility of output. We also quantify the contribution of various factors to the business cycle variability within a region. We find cyclic commonalities and idiosyncrasies are related to ancient and colonial history and to contemporaneous trade relationships. Caliphate and Ottoman Empire membership as well as colonial rule in the twentieth century and contemporary Muslim share of population are the most promising predictors of business cycle commonalities in the region.
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Die Kosten von Wahlversprechen: Wie lokale Sparkassen eine neue Landesregierung finanzieren
Michael Koetter, Shasha Li, Paulina Scheit
Wirtschaft im Wandel,
Nr. 3,
2022
Abstract
Staatliche Banken in Deutschland verfolgen einen lokalen Entwicklungsauftrag in ihrer jeweiligen Gemeinde. Da sie dem Staat gehören, sind sie jedoch politischem Einfluss ausgesetzt. Dies birgt das Risiko, dass eine politisierte Mittelvergabe den Entwicklungsauftrag beeinträchtigt. Dennoch ist erstaunlich wenig darüber bekannt, ob die Kreditvergabe durch Banken in staatlichem Besitz in erster Linie dem Ziel der Entwicklung der Region oder einem politischen Ziel dient. In diesem Beitrag wird untersucht, wie sich ein Wechsel der Regierungspartei auf Landesebene auf die Kreditvergabe durch Sparkassen an die Landesregierung in Deutschland zwischen 1992 und 2018 ausgewirkt hat. Die Schätzergebnisse bestätigen: Lokale Sparkassen erhöhen nach einem wahlbedingten Wechsel der Regierungspartei die Kreditvergabe an die Landesregierung – auf Kosten der Kreditvergabe an lokale Haushalte. Ein Regierungswechsel kann also die Indienstnahme der Sparkassen für landespolitische Ziele aktivieren und möglicherweise ihren öffentlichen Auftrag zur lokalen Entwicklung beeinträchtigen.
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17.08.2022 • 19/2022
Arbeitsmobilität gehört zum Strukturwandel
Der Kohleausstieg wird die betroffenen Regionen auch dadurch verändern, dass ein Teil der Beschäftigten abwandert. Die Politik sollte diesen Prozess bei der Strukturpolitik berücksichtigen, denn vollständig verhindern lässt er sich nicht. Das verdeutlicht eine vom Leibniz-Institut für Wirtschaftsforschung Halle (IWH) veröffentlichte Studie an einem historischen Beispiel.
Oliver Holtemöller
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The Cleansing Effect of Banking Crises
Reint E. Gropp, Steven Ongena, Jörg Rocholl, Vahid Saadi
Economic Inquiry,
Nr. 3,
2022
Abstract
We assess the cleansing effects of the 2008–2009 financial crisis. U.S. regions with higher levels of supervisory forbearance on distressed banks see less restructuring in the real sector: fewer establishments, firms, and jobs are lost when more distressed banks remain in business. In these regions, the banking sector has been less healthy for several years after the crisis. Regions with less forbearance experience higher productivity growth after the crisis with more firm entries, job creation, and employment, wages, patents, and output growth. Forbearance is greater for state-chartered banks and in regions with weaker banking competition and more independent banks.
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Trust, Politics and Post-IPO Performance: SOEs vs. the Private Sector
Bill Francis, Iftekhar Hasan, Xian Sun, Mingming Zhou
Economic and Political Studies,
Nr. 3,
2022
Abstract
This paper empirically investigates the role of social trust in the long-term performance of the initial public offerings (IPOs) in China, controlling for the formal institutional environment. We find that privately owned or smaller IPO firms experience significantly better post-IPO performance when they are incorporated in regions with more social trust. The state-owned and bigger IPO firms, on the other hand, experience better long-term post-IPO performance when they are incorporated in regions with stronger formal institutions (e.g. court enforcement and contract holding). Political pluralism turns out to benefit all IPOs in the long term. In addition, our evidence shows that stronger social trust substitutes for the quality of court enforcement but complements the role of contract holding. These results are robust after controlling for alternative definitions of ownership, outliers, non-linear effects of institutions, and the potential endogeneity of institutions in the model.
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