Thematic portfolio optimization: challenging the core satellite approach

In recent years, thematic exchange-traded funds (ETF) have increased in economic significance. Investors in thematic ETFs have more than just financial objectives and gain a non-monetary added value from a thematic portion in their portfolios. Therefore, traditional portfolio optimization models which target only financial criteria cannot suit these investors’ needs anymore. Nevertheless, to account for their thematic interests, investors adapt a core satellite strategy in which conventional core portfolios and thematic satellite portfolios are combined. Thus, these portfolios are separately optimized without further considering inter-portfolio correlation effects. Since modern portfolio theory has originally been established to, inter alia, optimize these correlation effects, portfolios can only be efficient by chance. Therefore, this study targets the correlation effects between conventional and thematic portfolios and uses a tri-criterion thematic portfolio optimization model as an overall framework. Throughout a two-part analysis with tradable ETFs and a simulation with 250,000 draws and 1,750,000 portfolio optimizations performed, the status quo is compared to the tri-criterion model. Quantifying the suboptimality, simulation results show a mean portfolio improvement of 6.23% measured as relative yield enhancement. Further, our analysis concludes that the more narrowly a theme is defined and the more particular it is, relative yield enhancements can increase up to 46.88%.

     

Japan's demographic revolution? A study of advertising practitioners' views on stereotypes

This article presents results from a survey of advertising practitioners in Japan focusing on their opinions about the communication objectives and stereotypes, specifically the effectiveness of older spokespersons, their general views on older models in advertising and the effectiveness of older models by product category. We find that these opinions are rather positive. The intention to use a larger number of older models is affected by the perceived effectiveness of older spokespersons and the expected increase in older models and client interest. When targeting an older audience, older spokespersons are seen as particularly effective for the product category of health/medical, but for a general audience it is financial services/insurance. Regardless of product category, they are perceived more effective when targeting an older versus a general audience and when targeting aged 50–64 versus 65 plus.     

Economic geography and emerging market clusters: A co-evolutionary study of local and non-local networks in Bangalore

The presence of network ties within location plays a significant role in organization and evolution of clusters. This has proven to be particularly true for clusters specializing in knowledge intensive industries, where the organization of resources – people and technology – has been a primary driver for firm and regional performance. With the help of a longitudinal case study of the Bangalore IT cluster in India, we investigate the effect of local and non-local network ties on its evolution. We argue that networks – both local and non-local – play an important role in the development of cluster. We propose a non-linear relationship between cluster evolution phases and the type of network ties most prominent. Our study also outlines the role that embedding, expansion, and extension of ties plays in transitioning cluster from one phase to the other. The consideration of non-local ties is rather nascent in the cluster literature and promises to enhance the understanding of how clusters develop at both levels – policy as well as firm.     

The relative importance of human resource management practices for innovation

Human resource management (HRM) practices are generally expected to stimulate a firm's innovation performance. However, which of these practices really pay off? Based on a unique dataset that includes detailed information for both a firm's innovation activities and a broad set of HRM practices, we find that primarily new workplace organization practices seem to enhance a firm's innovation activities. Flexible practices of working time management and incentive payment schemes show only small effects on both innovation propensity and innovation success. Further training does only affect innovation success, but not innovation propensity. Overall, we find a stronger linkage between HRM practices and innovation propensity than with innovation success. Further, we find that innovation propensity increases, first, with the number of combinations of HRM practices adopted by a firm but not with the number of combinations of HRM practices from different groups of HRM practices adopted by a firm.     

Using the multi-level perspective on socio-technical transitions to assess innovation policy

In recent years a growing literature on socio-technical transitions towards sustainability has emerged. Scholars have explored ways through which configurations of technologies, infrastructures, social practices, institutions and markets can change to fulfil their functions in a more sustainable way. A multi-level perspective (MLP) has been developed to describe and analyse these complex, long-term processes. It has also been used to help design policy for example in the Netherlands. In this paper the MLP is used in a novel way: as a heuristic to ex ante assess policies to stimulate socio-technical transitions. Instead of using it for policy development, the MLP is used here for an assessment of policy. The analysis focuses on a particular policy initiative intended to stimulate the transition to a low carbon economy in the UK: the Carbon Trust. This paper makes two contributions to the socio-technical transitions literature: Conceptually, the paper demonstrates the usefulness of the socio-technical multi-level perspective to analyse policies and assess their likely impact ex ante against the background of theorising about the patterns of large scale, socio-technical change. Empirically, the paper finds that the activities of the Carbon Trust consist of a variety of well targeted ways to stimulate the development of socio-technical niches as well as to change regime practices directly. Nevertheless, the paper argues that this model also faces difficulties in promoting a transition towards a low carbon economy.     

The internal impact of a customs union; Baden and the Zollverein

Tariffs can affect the growth of states. But how do they affect regional growth within states? Using Baden's 1836 entry into the Zollverein, the customs union of German states, I investigate the internal impact of a change in tariffs. With a new data set of regional employment data I demonstrate that the Zollverein had a substantial positive effect. Two market access effects are shown, one follows the standard market access predictions and the second triggers the direct investment by Swiss entrepreneurs in German regions close to their home base. Furthermore occupational change within the crafts sector was shifting labour towards higher taxed occupations and towards the region close to Switzerland.