Excess Volatility in European Equity Style Indices - New Evidence
Marian Berneburg
IWH Discussion Papers,
No. 16,
2006
Abstract
Are financial markets efficient? One proposition that seems to contradict this is Shiller’s finding of excess volatility in asset prices and its resulting rejection of the discounted cash flow model. This paper replicates Shiller’s approach for a different data set and extends his analysis by testing for a long-run relationship by means of a cointegration analysis. Contrary to previous studies, monthly data for an integrated European stock market is being used, with special attention to equity style investment strategies. On the basis of this analysis’ results, Shiller’s findings seem questionable. While a long-run relationship between prices and dividends can be observed for all equity styles, a certain degree, but to a much smaller extent than in Shiller’s approach, of excess volatility cannot be rejected. But it seems that a further relaxation of Shiller’s assumptions would completely eliminate the finding of an overly strong reaction of prices to changes in dividends. Two interesting side results are, that all three investment styles seem to have equal performance when adjusting for risk, which by itself is an indication for efficiency and that market participants seem to use current dividend payments from one company as an indication for future dividend payments by other firms. Overall the results of this paper lead to the conclusion that efficiency cannot be rejected for an integrated European equity market.
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Gesamtwirtschaftliche Effekte der Förderung regenerativer Energien, insbesondere der Biomasse - Eine kritische Beurteilung vor dem Hintergrund modelltheoretischer Konzeptionen
Götz Zeddies
Zeitschrift für Umweltpolitik und Umweltrecht 2/2006,
No. 2,
2006
Abstract
Renewable energies are largely promoted in the Federal Republic of Germany by means of political instruments by the federal government as well as by the federal states. However, the effects of promoting renewable energies on growth and employment are politically controversial. On the part of the scientists, the macroeconomic effects of the promotion of renewable energies were already analysed in different studies by various authors. At first sight, even the scientific results do not allow definite conclusions. The reasons for this may be seen in the diversity of the applied empirical methods and models with respect to their closeness and the model assumptions. Against the background of these difficulties, the aim of this paper is to discuss the general problems of macroeconomic policy analyses, to formulate methodical model requirements and to examine important existing scientific studies with respect to these requirements and to evaluate their results.
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Economic convergence across German regions in light of empirical findings
Udo Ludwig, John B. Hall
Cambridge Journal of Economics,
2006
Abstract
This paper challenges the convergence hypothesis advanced by R. Barro and X. Sala-i-Martin as it is applied to explain the forces behind, patterns exhibited by and time line for German regional convergence. Exposed in some detail are the spurious neoclassical and marginalist assumptions, purporting that 'automatic' forces would indeed bring about a convergence in per capita incomes between two German regions. A trend exhibiting slow growth in per capita income in Germany's eastern region renders a Beta coefficient so low as to rule out convergence altogether. In addition, capital fails to move between German regions in the pattern assumed by the convergence hypothesis.
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The Contestable Markets Theory - Efficient Advice for Economic Policy
Christian Growitsch, Thomas Wein
External Publications,
2004
Abstract
During the nineties of the last century several formerly monopolistic markets (telecommunication, electricity, gas, and railway) have been deregulated in Germany based on European directives and theoretically inspired by the theory of contestable markets. The original contestable market theory implied three assumptions necessary to be satisfied to establish potential competition: Free market entry, market exit possible without any costs, and the price adjustment lag exceeding the entry lag. Our analysis shows that if the incumbent reduces its prices slowly (high adjustment lag) and the market entry can be performed quickly (low entry lag), a new competitor will be able to earn back sunk costs. Therefore it is not necessary that all three conditions be complied with for potential competition to exist. Applying this „revised“ contestable market theory to the deregulated sectors in Germany, natural monopolies can be identified in telecommunication sections local loops and local/regional connection networks, in the national electricity grid and the regional/local electricity distribution networks, in the national and regional/local gas transmission/distribution sections, and in the railroad network. These sections are not contestable due to sunk costs, expected high entry lags and a probably short price adjustment lag. They are identified as bottlenecks, which should be regulated. The function of system operators in energy and railroad are closely related to the non-contestable monopolistic networks.
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Business services in East Germany - an update
Siegfried Beer
Wirtschaft im Wandel,
No. 8,
2004
Abstract
The article presents the results of the German service sector statistic 2001 for company oriented services in the New Länder (without Berlin), which have been derived from data of the regional statistical offices. The article can be regarded as an update of an earlier version (see “Wirtschaft im Wandel”, 12/2003, p.342-349). Fundamental results are: 1. Compared to 2000, the New Länder’s proportion of Germany’s total revenue and employment in company oriented services has, compared to 2000, slightly increased, but remains rather small. 2. The profitability of East German companies has deteriorated, measured by total expenses per sales unit. Partially this might be due to the increased number of businesses. 3. Last evaluation’s assumption, that East German company’s labor productivity (gross value added per employees) is half of the West German’s, has been proofed in this actual evaluation. An illustration of reasons is not being provided since it has been discussed extensively in the first evaluation.
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Measurement of Contagion in Banks' Equity Prices
Reint E. Gropp, G. Moerman
Journal of International Money and Finance,
No. 3,
2004
Abstract
This paper uses the co-incidence of extreme shocks to banks’ risk to examine within-country and across country contagion among large EU banks. Banks’ risk is measured by the first difference of weekly distances to default and abnormal returns. Using Monte Carlo simulations, the paper examines whether the observed frequency of large shocks experienced by two or more banks simultaneously is consistent with the assumption of a multivariate normal or a student t distribution. Further, the paper proposes a simple metric, which is used to identify contagion from one bank to another and identify “systemically important” banks in the EU.
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Intra-industry trade and the productivity gap in the enlarged EU
Hubert Gabrisch
Wirtschaft im Wandel,
No. 16,
2002
Abstract
Trade between the European Union (EU) and the Transition Economies (TE) is increasingly characterised by intra-industry trade. The decomposition of intra-industry trade into horizontal and vertical shares reveals predominantly vertical structures with decisively more quality advantages for the EU and less quality advantages for TE countries whenever trade has been liberalised. Sizeable foreign direct investment did obviously not reduce the superiority of producers in the EU in terms of technology, capital and human capital. The productivity gap between the EU and TE countries remains. EU firms have been able to increase their product quality and to shift low-quality segments of production to TE countries. This may suggest a product-quality cycle prevalent in EU-TE trade. The testing of this model confirms the assumptions.
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The flood disaster and GDP in Germany
Udo Ludwig, Hans-Ulrich Brautzsch
Wirtschaft im Wandel,
No. 12,
2002
Abstract
The flood at Elbe, Danube and their tributary streams destroyed billion Euros worth of Capital Stock. GDP, though, does not include Capital Stock, but production. On the basis of plausible assumptions the production interruptions caused by the flood are estimated for Germany and the most severely affected areas of Saxony and Saxony-Anhalt. Considering the “set-aside” funds for restoration and with the help of the Input-Output-Model the direct effects on production and employment within the different economic sectors are being calculated. The results are compared with the foregone consumption due to the delayed next step of the tax reform. On balance clear effects can be observed in construction.
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A revised theory of contestable markets : applied on the German telecommunication sector
Christian Growitsch, Thomas Wein
External Publications,
No. 275,
2002
Abstract
Despite the scepticism raised by the German Monopoly Commission our analysis shows that the revised theory of contestable markets can be applied to the telecommunications market better than expected. The original contestable market theory implied three assumptions necessary to be satisfied to establish potential competition: Free market entry, market exit is possible without any costs, and the price adjustment lag exceeds the entry lag. Our analysis shows that if the incumbent reduces its prices slowly (high adjustment lag) and the market entry can be performed quickly (low entry lag), a new competitor will be able to earn back sunk costs. Therefore it is not necessary that all three conditions are satisfied for potential competition to exist. We applied the ‘revised’ contestable market theory to the German telecommunication market and have been able to clearly identify the value added stages in which regulation is required. Under the present conditions local loops - which can be determined as natural monopolies - are not contestable due to sunk costs, high entry lags expected and a probable short price adjustment lag. Local loops can be identified as monopolistic bottlenecks therefore. Regional and local connection networks should also be regulated because a high entry lag and a low price adjustment lag have to be expected as well as current competition does not exist today. The national connection network shows current competition between several network providers; hence regulation can be abolished in this field. Assumed that network access is regulated, services can be supplied by several competing firms.
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International economic development still impedes growth in Central and Eastern Europe
Axel Brüggemann
Wirtschaft im Wandel,
No. 3,
2002
Abstract
The world wide economic slow down has increasingly affected the transition economies. Lower demand in Western Europe for exports from Central and Eastern Europe has depressed industrial production and growth in the region. Strong domestic demand has managed to offset some of the negative external influences. In total the countries in Central and eastern Europe will grow with 3,1 % in 2002 and with 4,1% in 2003. The higher growth in 2003 results from the combination of a continuing strong domestic demand and amore favourabel external environment, as the world economy starts to recover in the second half of 2002. Inflation will continue to slow, while unemployment decreases only marginally. Higher growth will also lead to higher current account deficits.
The slowdown in 2001 has increased the risk potential for financial crises in Central and Eastern Europe. The forecast is build upon the assumption that no such crisis will occur, if a crisis does errupt the forecast will have to be revised downwards. The regular anlysis carried out by the IWH regarding the development of the risk potential, indicate particular high risks for Poland and to a somewhat lesser extent also for Hungary. As the unfavourable external economic conditions will persist for the coming months, a further increase in the risk potential can be expected.
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