Testing for Structural Breaks at Unknown Time: A Steeplechase
Makram El-Shagi, Sebastian Giesen
Computational Economics,
No. 1,
2013
Abstract
This paper analyzes the role of common data problems when identifying structural breaks in small samples. Most notably, we survey small sample properties of the most commonly applied endogenous break tests developed by Brown et al. (J R Stat Soc B 37:149–163, 1975) and Zeileis (Stat Pap 45(1):123–131, 2004), Nyblom (J Am Stat Assoc 84(405):223–230, 1989) and Hansen (J Policy Model 14(4):517–533, 1992), and Andrews et al. (J Econ 70(1):9–38, 1996). Power and size properties are derived using Monte Carlo simulations. We find that the Nyblom test is on par with the commonly used F type tests in a small sample in terms of power. While the Nyblom test’s power decreases if the structural break occurs close to the margin of the sample, it proves far more robust to nonnormal distributions of the error term that are found to matter strongly in small samples although being irrelevant asymptotically for all tests that are analyzed in this paper.
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Limited Investor Attention and the Mispricing of American Depositary Receipts
Stefan Eichler
Economics Letters,
No. 3,
2012
Abstract
I test whether more investor attention leads to a better exploitation of arbitrage opportunities and, in turn, to less mispricing of American Depositary Receipts (ADRs). Using data on 536 stocks I find that more investor attention significantly reduces ADR mispricing.
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Predicting Financial Crises: The (Statistical) Significance of the Signals Approach
Makram El-Shagi, Tobias Knedlik, Gregor von Schweinitz
Abstract
The signals approach as an early warning system has been fairly successful in detecting crises, but it has so far failed to gain popularity in the scientific community because it does not distinguish between randomly achieved in-sample fit and true predictive power. To overcome this obstacle, we test the null hypothesis of no correlation between indicators and crisis probability in three applications of the signals approach to different crisis types. To that end, we propose bootstraps specifically tailored to the characteristics of the respective datasets. We find (1) that previous applications of the signals approach yield economically meaningful and statistically significant results and (2) that composite
indicators aggregating information contained in individual indicators add value to the signals approach, even where most individual indicators are not statistically significant on their own.
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The Distorting Impact of Capital Controls
Makram El-Shagi
German Economic Review,
No. 1,
2012
Abstract
This paper uses panel data to show that capital controls have a significant impact on international interest rate differentials. Various types of controls can be distinguished within the data. The analysis shows that the aforementioned effects of capital controls on interest rates are especially strong in the case of capital import controls on portfolio capital; the implementation of these controls has been suggested in the wake of the Asian Crisis to prevent further crises. The results presented herein contradict the hypothesis that capital controls can achieve a restructuring of the maturity of capital inflows without a distortion in international capital allocation.
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Extreme Dependence with Asymmetric Thresholds: Evidence for the European Monetary Union
Stefan Eichler, R. Herrera
Journal of Banking and Finance,
No. 11,
2011
Abstract
Existing papers on extreme dependence use symmetrical thresholds to define simultaneous stock market booms or crashes such as the joint occurrence of the upper or lower one percent return quantile in both stock markets. We show that the probability of the joint occurrence of extreme stock returns may be higher for asymmetric thresholds than for symmetric thresholds. We propose a non-parametric measure of extreme dependence which allows capturing extreme events for different thresholds and can be used to compute different types of extreme dependence. We find that extreme dependence among the stock markets of ten initial EMU member countries, the United Kingdom, and the United States is largely asymmetrical in the pre-EMU period (1989–1998) and largely symmetrical in the EMU period (1999–2010). Our findings suggest that ignoring the possibility of asymmetric extreme dependence may lead to an underestimation of the probability of co-booms and co-crashes.
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Komparative Vorteile im Handel Deutschlands mit Osteuropa gering
Martina Kämpfe, Götz Zeddies
Wirtschaft im Wandel,
No. 9,
2011
Abstract
Die mittel- und osteuropäischen EU-Mitgliedstaaten haben in den vergangenen Jahren im deutschen Außenhandel stetig an Bedeutung gewonnen. Während die kräftig expandierende Nachfrage in dieser Region der deutschen Exportindustrie deutliche Wachstumsimpulse lieferte, wurde in zunehmenden Importen aus diesen relativ arbeitsreichen Ländern häufig eine Gefahr für die inländische Beschäftigung gesehen. Aus Sicht der Außenhandelstheorien ist ein solcher Effekt insbesondere dann zu erwarten, wenn intersektoraler Handel vorliegt, der strukturellen Anpassungsdruck auslösen und die relative Entlohnung oder die Beschäftigung der Produktionsfaktoren in den Handelspartnerländern beeinflussen kann. Vor diesem Hintergrund analysiert dieser Beitrag zunächst die Produktions- und Beschäftigungsstrukturen ausgewählter osteuropäischer Länder. Darauf aufbauend folgt eine Untersuchung der Außenhandelsstruktur zwischen Ost- und Westdeutschland auf der einen und den osteuropäischen EU-Mitgliedstaaten, insbesondere Polen, der Tschechischen Republik, Ungarn und der Slowakei, auf der anderen Seite. Im Ergebnis zeigt sich, dass der Außenhandel zwischen Deutschland und Osteuropa größtenteils intra-industriell geprägt ist und weder
Alte noch Neue Bundesländer über ausgeprägte komparative Vorteile bei kapital- und humankapitalintensiven Gütern gegenüber Osteuropa verfügen.
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Der Euro als Triebfeder des deutschen Exports?
Götz Zeddies
List Forum für Wirtschafts- und Finanzpolitik,
No. 3,
2011
Abstract
The excessive accumulation of debt especially in the southern member states currently challenges European Monetary Union (EMU). Whereas for a long time, preventing a break-up of EMU was indisputable, in the meantime, voices were being raised claiming a withdrawal of Greece from the currency union. Especially in Germany, a withdrawal of individual members from the currency union (or even a complete break-up of EMU) is associated with economic disadvantages. Particularly, it is argued that EMU is of greatest utility for Germany due to the countries’ longstanding wage moderation and strong export orientation. Against this background, this paper analyzes the effects of a withdrawal of individual member states from the currency union on German exports. Thereby, it is assumed that a withdrawal of those countries from EMU would be accompanied by real devaluations. As the analyses show, the impact of a withdrawal of Ireland, Greece, Spain and Portugal from the currency union on German exports would be rather small. However, since European Monetary Union as a whole is still the most important foreign market for German manufacturers, a complete break-up of EMU could noticeably weaken German export performance.
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What Might Central Banks Lose or Gain in Case of Euro Adoption – A GARCH-Analysis of Money Market Rates for Sweden, Denmark and the UK
Herbert S. Buscher, Hubert Gabrisch
IWH Discussion Papers,
No. 9,
2011
Abstract
This study deals with the question whether the central banks of Sweden, Denmark and the UK can really influence short-term money markets and thus, would lose this influence in case of Euro adoption. We use a GARCH-M-GED model with daily money market rates. The model reveals the co-movement between the Euribor and the shortterm interest rates in these three countries. A high degree of co-movement might be seen as an argument for a weak impact of the central bank on its money markets. But this argument might only hold for tranquil times. Our approach reveals, in addition, whether there is a specific reaction of the money markets in turbulent times. Our finding is that the policy of the European Central Bank (ECB) has indeed a significant impact on the three money market rates, and there is no specific benefit for these countries to stay outside the Euro area. However, the GARCH-M-GED model further reveals risk divergence and unstable volatilities of risk in the case of adverse monetary shocks to the economy for Sweden and Denmark, compared to the Euro area. We conclude that the danger of adverse monetary developments cannot be addressed by a common monetary
policy for these both countries, and this can be seen as an argument to stay outside the Euro area
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IWH-Indikatoren zur Kapitalmarktregulierung: Hinweise auf eine Renaissance der Kapitalverkehrskontrollen
Makram El-Shagi
Wirtschaft im Wandel,
No. 6,
2011
Abstract
Mittels der hier erstmals vorgestellten IWH-Indikatoren zur Beschreibung der Regulierungsintensität internationaler Kapitalmärkte ist es möglich, Kapitalverkehrskontrollen künftig mit ökonometrischen Verfahren zu evaluieren. Der Datensatz deckt über 150 Länder und einen Zeitraum von bisher 13 Jahren (1997 bis 2009) ab. Er unterscheidet Kapitalverkehrskontrollen nicht nur nach ihrer Intensität, sondern auch nach der Richtung (Zufluss oder Abfluss) der regulierten Kapitalströme. So kann den unterschiedlichen Folgen von Kapitalmarktpolitik Rechnung getragen werden, je nachdem, ob sie durch Zuflusskontrollen dem Aufbau riskanter Außenpositionen entgegenwirken möchte, oder ob sie – wesentlich weiter verbreitet – auf eine Erhöhung des heimischen
Kapitalangebots abzielt. Die explizite Berücksichtigung von diskretionären Entscheidungsspielräumen gestattet es darüber hinaus, auch die institutionelle Ausgestaltung von Kapitalverkehrskontrollen in die empirische Analyse
einzubeziehen. Erste Auswertungen der Indikatoren zeigen in der Folge der Finanz- und Wirtschaftskrise eine weltweite Renaissance der Regulierung grenzüberschreitender Kapitalströme. Der Anteil regulierter Teilmärkte ist von 2007 bis 2009 global um ca. zehn Prozentpunkte angestiegen. Kapitalimporte und -exporte sind dabei in ähnlicher Form betroffen. Der Anstieg der Kontrollintensität geht nicht auf massive Eingriffe einzelner Staaten zurück, sondern ist
über alle betrachteten Ländergruppen hinweg zu beobachten. Teilweise, wie z. B. in den Transformationsökonomien des früheren Warschauer Paktes, wurden viele Jahre der Liberalisierungsanstrengungen in kurzer Zeit kompensiert. Diese Entwicklung ist insofern bedenklich, als dass sich theoretische Überlegungen bezüglich Kapitalverkehrskontrollen stark widersprechen und auch keine empirische Evidenz vorliegt, die eine solche Politik rechtfertigt.
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Extreme Risks in Financial Markets and Monetary Policies of the Euro-candidates
Hubert Gabrisch, Lucjan T. Orlowski
Comparative Economic Studies,
No. 4,
2011
Abstract
This study investigates extreme tail risks in financial markets of the euro-candidate countries and their implications for monetary policies. Our empirical tests show the prevalence of extreme risks in the conditional volatility series of selected financial variables, that is, interbank rates, equity market indexes and exchange rates. We argue that excessive instability of key target and instrument variables should be mitigated by monetary policies. Central banks in these countries will be well-advised to use both standard and unorthodox (discretionary) tools of monetary policy while steering their economies out of the financial crisis and through the euro-convergence process.
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