Jensen's alpha and the market‐timing puzzle

Theory predicts that market‐timing activities bias Jensen's alpha (JA). However, empirical studies have failed to find consistent evidence of this bias. We tackle this puzzle in a nested model analysis and show that the bias contains an exogenous market component that is unrelated to market‐timing skill. In a comprehensive empirical analysis of US mutual funds, we find that the timing‐induced bias in JA is mainly driven by this market component, which is uncorrelated with measured timing activities. Measures of total performance that allow for timing activities are virtually identical to JA, even if timing activities are present in the evaluated fund. Hence, we conclude that JA is a sufficient measure of total performance.     

On the measurement of investment types: Heterogeneity in corporate tax elasticities

This paper contributes to debates about the appropriate characterisation of heterogeneous investment types and to what extent different investment motives affect the responsiveness to corporate taxation. In particular, we employ and refine a methodology to better evaluate the tax elasticity of investment types. Using a combination of both firm‐specific information and sector‐specific information from input–output tables, we discuss how to classify investment as non‐related, horizontal, vertical and complex types. First, we point out to what extent the resulting classification depends on assumptions made by the researcher. Second, we employ an ample set of classifications and find that non‐related investment reacts stronger to corporate taxation, whereas horizontal investment is less responsive, though, significant negative tax semi‐elasticities turn out for the subset of manufacturing industries. To address inherent characteristics of vertical and complex investment, we extend the methodology and find that, by and large, stronger business motives reduce the tax responsiveness of investment to a larger extent. Given the current debates about substantial corporate tax reforms, it is all the more important to recognise that corporate tax effects can vary fundamentally between countries, driven by country‐specific differences in their composition of industries and investment types.     

Identifying business opportunities for sustainable development: Longitudinal and experimental evidence contributing to the field of sustainable entrepreneurship

Which factors facilitate the identification of business opportunities for sustainable development? To answer this question, we develop a process model of sustainable opportunity identification. We argue that sustainable opportunity identification is a process with transitions from problem to solution identification and from solution to sustainable opportunity identification. Moreover, the transitions are facilitated by two factors—awareness of adverse consequences and entrepreneurial attitude—providing motivation and direction in the process. We tested our model in a field study (N = 107) and two experiments (N = 53 and N = 69). Our findings show that awareness of adverse consequences and entrepreneurial attitude influence the process of sustainable opportunity identification, explaining under which conditions people are more likely to identify business opportunities for sustainable development. Our study thus contributes to the field of sustainable entrepreneurship.     

Organizational characteristics explaining participation in sustainable business models in the sharing economy: Evidence from the fashion industry using conjoint analysis

Environmental and social challenges require new sustainable business models, like sharing platforms. However, sharing platforms differ widely in their contribution to a more sustainable society. Whereas idealistic sharing platforms have dominant social goals, other sharing platforms are, or became, commercial. We explore the attractiveness of the typical organizational characteristics of idealistic sharing platforms in the fashion industry context, an industry with negative environmental and social impacts. Based on a literature review and exploratory focus groups, we conduct an online survey using conjoint analysis, completed by 1,512 respondents. Our results reveal that potential users prefer clothes sharing platforms to be small, to not partner with large clothing retailers, to have the possibility to participate in decision‐making, but to not require shareholding.     

Revisiting the sectoral Linder hypothesis: Aggregation bias or fixed costs?

This paper reassesses and revisits the Sectoral Linder Hypothesis due to Hallak, which posits that similar tastes for quality lead to more intensive trade between similar countries at the sectoral level. First, the measure of demand similarity used in this paper is based on the distribution of income estimated from household surveys. The paper finds that a similarity measure based on the income distribution produces stronger results than the traditionally used measure based on GDP per capita. Moreover, the country/product level extensive margin is taken into account. This is important because similarity is likely to affect the fixed costs of trade and the fixed costs of alternative means of servicing a market (i.e., licensing and FDI). Fixed costs, in turn, affect the number and average productivity of firms that engage in bilateral trade and hence the overall volume of trade. This paper employs the method by Helpman et al. to control for the extensive margin. Heteroskedasticity is addressed using a feasible generalized least squares (FGLS) approach. The findings show that once controlling for the effect of similarity on the extensive margin, the Linder hypothesis holds at more aggregate levels. Other robustness checks suggest that results are not confined to products that are vertically differentiated.     

Katastrophenanleihen als Risikotransfer-Instrument für Industrieunternehmen

All over the world an increase in natural catastrophes and resulting damages can be observed for entire economies as well as for individual industrial enterprises. This trend leads to extraordinary expensive traditional natural catastrophe insurance or even a lack of insurance capacities. Due to the increased threat resulting from natural catastrophes and the inefficiencies of traditional insurance solutions, it will be analyzed in the following whether catastrophe bonds (cat bonds), as an alternative risk transfer instrument, should play a role in the risk management portfolio of industrial companies. It will be discussed whether catastrophe bonds are possible risk transfer instruments for industrial companies and whether certain basic prerequisites for a confirmation of the suitability are recognizable. In a further step, the design possibilities for cat bonds will be presented and the most suitable design alternatives for industrial companies as issuers of cat bonds will be elaborated. In addition, a critical comparison between the usage of traditional insurance solutions and cat bonds by industrial companies in order to protect themselves against natural catastrophes will be conducted. The result is a first orientation and a general guideline for dealing with catastrophe bonds as part of the operational risk management for industrial companies.     

THE DYNAMICS OF REAL EXCHANGE RATES: A RECONSIDERATION

In this paper we offer a bootstrap‐based version of the Cox specification test for non‐nested hypothesis to discriminate between ESTAR and MSAR models. Both models are commonly used for modeling real exchange rates dynamics. We show that the test has good size and power properties in finite samples. In an application, we analyze several major real exchange rates to shed light on the question of which model describes these processes best. This allows us to draw conclusions about the driving forces of real exchange rates. Copyright © 2013 John Wiley & Sons, Ltd.     

Reanalyzing Zero Returns to Education in Germany

Pischke and von Wachter (Review of Economics and Statistics 2008; 90 (3): 592–598) find zero earnings returns to compulsory schooling in the basic school track in Germany. We reanalyze their study using a different dataset. In an extension, we use additional instruments which allow estimation of heterogeneous effects for different groups of compliers. We can confirm the previous result and also find zero returns for other compliers in higher track schools. Moreover, we do not find a causal effect of schooling on cognitive skills. This is in line with a potential reason Pischke & von Wachter (2008) give for their result, namely that basic skills are learned earlier in Germany and additional years of schooling are no longer effective. Copyright © 2015 John Wiley & Sons, Ltd.     

Bank size and risk-taking under Basel II

We analyze the relationship between bank size and risk-taking under the Basel II Capital Accord. Using a model with imperfect competition and moral hazard, we show that the introduction of an internal ratings based (IRB) approach improves upon flat capital requirements if the approach is applied uniformly across banks and if the costs of implementation are not too high. However, the banks’ right to choose between the standardized and the IRB approaches under Basel II gives larger banks a competitive advantage and, due to fiercer competition, pushes smaller banks to take higher risks. This may even lead to higher aggregate risk-taking.