The spatial component of R&D networks

We study the role of geography in R&D networks by means of a quantitative, micro-geographic approach. Using a large database that covers international R&D collaborations from 1984 to 2009, we localize each actor precisely in space through its latitude and longitude. This allows us to analyze the R&D network at all geographic scales simultaneously. Our empirical results show that despite the high importance of the city level, transnational R&D collaborations at large distances are much more frequent than expected from similar networks. This provides evidence for the ambiguity of distance in economic collaboration which is also suggested by the existing literature. In addition we test whether the hypothesis of local buzz and global pipelines applies to the observed R&D network by calculating well-defined metrics from network theory.     

Firm characteristics that drive the momentum pattern in the UK stock market

Previous studies have estimated the company characteristics of previous winners and losers to explore the momentum effect. Using UK data, this study focuses on the characteristics of companies that actually generate the momentum pattern. These are previous winners who keep performing well (WW) and past losers who consistently perform poorly (LL). This study illustrates that WW and LL firms may exhibit market-based characteristics similar to those of young, low-priced, small capitalisation companies, but that there are significant differences. Accounting and fundamental signals (e.g. profitability, value/growth) tend to distinguish winners from losers. Based on firm characteristics, we further develop investment strategies that can outperform significantly the profitability of the momentum strategy.     

Market Efficiency, Thin Trading and Non-linear Behaviour: Evidence from an Emerging Market

Emerging markets efficiency has been widely investigated, with mixed results. However such evidence is only reliable if the methodology adopted accounts for the institutional features of the market. Unlike previous studies this paper corrects for thin trading and incorporates possible non-linear behaviour and regulatory changes. Using Istanbul Stock Exchange data we show that in its early years the exchange was characterised by non-linear behaviour and inefficient pricing. However, regulatory changes encouraged participation, improved information quality and led to prices impounding information more rapidly, suggesting markets become efficient with high trading volume, reliable information and an appropriate institutional framework.     

The Determinants of Debt Maturity Structure: Evidence from France,Germany and the UK

We examine the determinants of the debt maturity structure of French, German and British firms. These countries represent different financial and legal traditions that may have implications on corporate debt maturity structure. Our model incorporates the factors representing three major theories (tax considerations, liquidity and signalling, and contracting costs) of debt maturity. It also controls for capital market conditions. The results confirm the applicability of most theories of debt maturity structure for the UK firms. However, the evidence from France and Germany are mixed. Overall the findings suggest that the debt maturity structure of a firm is determined by firm‐specific factors and the country's financial systems and institutional traditions in which it operates.     

Which Targets Stimulate Cross-border Acquisitions? An Empirical Investigation of Industrial Organization and Trade Factors within a Competition Framework of International and Domestic Acquisition Targets

This paper provides new evidence on the determinants affecting cross-border acquisitions in a small open economy such as that of Greece. Specifically, our paper tests two sets of hypotheses: Firstly, factors stemming from industrial organization (IO) theory, such as market structure indicators of takeover targets, positively affect the decision of a foreign Transnational Corporation (TNC) to enact a takeover in Greece. Secondly, factors stemming from integration and trade theory, such as openness of targets, increase their significance in the development of international takeovers, due to the active participation of the country in the European integration process. Using a statistical model of “international vs. national targets” and an original data set of 229 targets during the 1989–1998 period, the paper finds, most importantly, that market structure indicators such as market share of targets have a positive effect on the acquisition decision of foreign TNCs. Also, some control variables such as firm size and liquidity of targets are found to be statistically significant. This specific pattern of foreign target characteristics is because cross-border acquisitions, which have been emerging as a new generation of FDI after the integration of Greece into the European Union (EU), are surprisingly still inclined to prefer the market-seeking motive to the efficiency-seeking motive.

The relationship between organizational culture and market orientation in the Greek telecommunication companies

The modern business environment is characterized by intense competition, which has led telecommunication companies to a continuous race towards gaining and maintaining a competitive advantage. In order to succeed, telecommunication companies “cultivate” market orientation and market oriented cultures as non-imitable characteristics, capable to ensure long–term corporate viability and growth. This paper provides an insight into the Greek telecommunication industry by: a) revealing the coordination between market orientation strategies with corresponding culture, b) the relationship between extrovert-type cultures with performance and c) how special traits of telecommunication providers (size and age) influence the degree of market orientation and the dominant culture type (introvert or extrovert). The paper contributes: a) to the creation of national cultural profile in the telecommunication industry, which can become a starting point in a wider trial to create a European industry profile, b) to the empirical testing of the correlation between culture and market orientation and c) to the examination of the extent to which background factors (such as firms’ age and size) should be taken into account during the implementation of a business strategy.     

Calculating the equity cost of capital using the APT: the impact of the ERM

One of the expected benefits of membership of the Exchange Rate Mechanism (ERM) was a reduction in risk which should lead to a lower cost of capital and foster investment and growth. Using the APT, we investigate the behavior of the equity market risk premium for the London Stock Exchange prior to and during sterling's membership of the ERM. We find that prior to and during the first year of membership the equity market risk premium fell quite dramatically. However, when conflict between domestic and ERM policy requirements arose at the turn of 1991, the equity risk premium increased and continued to do so until sterling's exit, partially wiping out the benefits of membership of the ERM.     

Identification of Greek Takeover Targets and Coherent Policy Implications

The main purpose of this paper is the identification of the characteristics of takeover targets in a small open economy like Greece, using the market for corporate control (MCC) hypothesis as theoretical background. Contrary to this hypothesis, the results indicate that the motives for merging or acquisition activities are basically of strategic character. Using a sample of 35 acquired and 105 non‐acquired firms, the sampling process was initially performed by a modified methodology of state‐based sampling, even if its nature cannot be recognized by the classical maximum likelihood estimator (MLE) of logit model. Subsequently, taking into account the small size of the sample, we develop and use, in the logit context, the bootstrap MLE as an advanced alternative method for reducing inherit bias and inefficiency. The findings remain uniform supporting the strategic motives explanation in actual takeover activities, a fact that clearly illustrates the framework of merger policies followed by the Greek Competition Committee during the period under study.     

Equity Home‐Bias: A Suboptimal Choice for UK investors?

In spite of the popularity of international portfolio diversification theory, extant empirical literature shows that investors prefer domestic assets and as a result, many studies argue that investors' portfolios are largely suboptimal. This paper examines whether British investors need to diversify their portfolios internationally to gain performance benefits from international markets or can they obtain these benefits by mimicking the portfolios with domestically traded assets. The results confirm that it is possible to mimic the performance of foreign equity with domestic equity. Indeed, the pay‐offs from homemade portfolios outperform those from international portfolios regardless of the periodic variation in the overall performance of the UK market vis‐à‐vis foreign markets. The superiority of homemade portfolio is more prominent in recent years and is enhanced by the increased internationalisation of developed capital markets. Therefore, investors' home bias is not suboptimal.