26.01.2021 • 3/2021
Krisensicherheit des europäischen Finanzsystems: Leopoldina und IWH organisieren Dialogveranstaltung
Steigende Arbeitslosigkeit und drohende Staatsinsolvenzen: Die Finanzkrise vor mehr als zehn Jahren hat ganz Europa getroffen. Die Folgen sind bis heute spürbar, zum Beispiel in Form niedriger Zinsen. Welche Lehren aus der Finanzkrise bisher gezogen wurden, ist Thema einer gemeinsamen Dialogveranstaltung der Nationalen Akademie der Wissenschaften Leopoldina und des Leibniz-Instituts für Wirtschaftsforschung Halle (IWH). Zu dieser Veranstaltung laden wir Sie herzlich ein und freuen uns über eine redaktionelle Erwähnung in Ihrem Medium.
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A Factor-model Approach for Correlation Scenarios and Correlation Stress Testing
Natalie Packham, Fabian Wöbbeking
Journal of Banking and Finance,
April
2019
Abstract
In 2012, JPMorgan accumulated a USD 6.2 billion loss on a credit derivatives portfolio, the so-called “London Whale”, partly as a consequence of de-correlations of non-perfectly correlated positions that were supposed to hedge each other. Motivated by this case, we devise a factor model for correlations that allows for scenario-based stress testing of correlations. We derive a number of analytical results related to a portfolio of homogeneous assets. Using the concept of Mahalanobis distance, we show how to identify adverse scenarios of correlation risk. In addition, we demonstrate how correlation and volatility stress tests can be combined. As an example, we apply the factor-model approach to the “London Whale” portfolio and determine the value-at-risk impact from correlation changes. Since our findings are particularly relevant for large portfolios, where even small correlation changes can have a large impact, a further application would be to stress test portfolios of central counterparties, which are of systemically relevant size.
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The Case for a European Rating Agency: Evidence from the Eurozone Sovereign Debt Crisis
Marc Altdörfer, Carlos A. De las Salas Vega, Andre Guettler, Gunter Löffler
Journal of International Financial Markets, Institutions and Money,
2019
Abstract
Politicians frequently voice that European bond issuers would benefit from the presence of a Europe-based rating agency. We take Fitch as a prototype for such an agency. With its ownership structure and a headquarter in London, Fitch is more European than Moody’s and S&P; during the Eurozone sovereign debt crisis, it also issued more favorable ratings. Fitch’s rating actions, however, were largely ignored by the bond market. Our results thus cast doubt on the benefits of a European credit rating agency.
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18.12.2018 • 22/2018
IWH leads large scale EU research project on productivity
Is productivity growth slowing in industrialised countries? And if so, why? From the start of 2019, the Halle Institute for Economic Research (IWH) will be addressing these questions as the coordinator of a new EU project. Economists and statistics experts from nine European partners will collaborate on the three-year project, entitled MICROPROD. With a total budget of just under three million euros, it is the IWH’s largest EU project to date.
Steffen Müller
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05.01.2017 • 3/2017
Secretariat for research network CompNet gets new home at IWH
The Halle Institute for Economic Research (IWH) – Member of the Leibniz Association is pleased to announce that it will be hosting the Secretariat for the Competitiveness Research Network (CompNet), an international network of scholars and practitioners, who share interest for top-notch research and policy analysis on competitiveness and productivity.
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04.01.2017 • 2/2017
Worse ratings by U.S. rating agencies for European sovereigns no argument for European rating agency
A new study by the Halle Institute for Economic Research (IWH) – Member of the Leibniz Association shows that the major U.S. rating agencies rated European sovereigns significantly worse than Fitch, which is more “Europe oriented”. Although the findings in part support the claim of some European politicians during the recent debt crisis that there was an “anti-Europe” bias of the U.S. agencies, the study shows that a new European agency would not address this problem. The reason: Market participants would not listen to the new agency.
Reint E. Gropp
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27.07.2016 • 33/2016
The merger of London Stock Exchange and Deutsche Boerse was reasonable
Shareholders of Deutsche Boerse AG have agreed to merge with London Stock Exchange (LSE). “I appreciate this decision“, says Prof Reint E. Gropp, president of Halle Institute for Economic Research (IWH). “Europe is in need of a competitive financial center. Especially now, after the Brexit referendum, the arguments for a merger are more convincing than ever.”
Reint E. Gropp
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IWH President: Why London Will Remain Europe’s Most Relevant Financial Center. Three Arguments.
Reint E. Gropp
Einzelveröffentlichungen,
2016
Abstract
„Der Finanzplatz London wird trotz Brexit seine dominante Position in Europa behalten. Das hat zum einen die Einführung des Euro gelehrt, liegt aber auch an den maßgeblichen Standortfaktoren Londons: der Größe der Stadt, der regulatorischen Umgebung und dem Humankapital“, so Professor Reint E. Gropp, Präsident des Leibniz-Instituts für Wirtschaftsforschung Halle (IWH).
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24.06.2016 • 26/2016
UK’s “No” to EU will be costly for both sides
On Thursday 23rd, the British people have decided to leave the European Union (EU) Their vote not to remain in the European community was surprisingly clear. UK’s exit will have both political and economic consequences which are far-reaching for the country itself as well as the rest of Europe. “The reactions of the remaining member states are the crucial key now, especially France’s and Germany’s” says Reint E. Gropp, President of the Halle Institute for Economic Research (IWH) – Member of the Leibniz Association.
Reint E. Gropp
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Efficiency in the UK Commercial Property Market: A Long-run Perspective
Steven Devaney, Oliver Holtemöller, R. Schulz
IWH Discussion Papers,
No. 15,
2012
Abstract
Informationally efficient prices are a necessary requirement for optimal resource allocation in the real estate market. Prices are informationally efficient if they reflect buildings’ benefit to marginal buyers, thereby taking account of all available information on future market development. Prices that do not reflect available information may lead to over- or undersupply if developers react to these inefficient prices. In this study, we examine the efficiency of the UK commercial property market and the interaction between prices, construction costs, and new supply. We collated a unique data set covering the years 1920 onwards, which we employ in our study. First, we assess if real estate prices were in accordance with present values, thereby testing for informational efficiency. By comparing prices and estimated present values, we can measure informational inefficiency. Second, we assess if developers reacted correctly to price signals. Development (or the lack thereof) should be triggered by deviations between present values and cost; if prices do not reflect present values, then they should have no impact on development decisions.
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