Optimal portfolios with minimum capital requirements

We propose a novel approach to active risk management based on the recent Basel II regulations to obtain optimal portfolios with minimum capital requirements. In order to avoid regulatory penalties due to an excessive number of Value-at-Risk (VaR) violations, capital requirements are minimized subject to a given number of violations over the previous trading year. Capital requirements are based on the recent Basel II amendments to account for the ‘stressed’ VaR, that is, the downside risk of the portfolio under extreme adverse market conditions. An empirical application for two portfolios involving different types of assets and alternative stress scenarios demonstrates that the proposed approach delivers an improved balance between capital requirement levels and the number of VaR exceedances. Furthermore, the risk-adjusted performance of the proposed approach is superior to that of minimum-VaR and minimum-stressed VaR portfolios.     

Calculating the Efficient Frontier for the Portuguese Stock Market

The paper investigates the efficient frontier and capital market line for the Portuguese stock market before and after the Global Financial Crisis. The efficient frontier and capital market line shift to positions that offer investors better opportunities as we move from 2000‐2008 to 2009–2015.     

Impact of innovation policies on small,medium and large Brazilian firms

This study comprises a comparative examination of the effects of innovation support programmes’ spend on innovative activities in small, medium and large Brazilian firms. The econometric methodology propensity score matching is used to assess the impacts of tax and financial incentives based on. Results show that innovation support programmes stimulate expenditure on innovative activities, especially financial incentives for the acquisition of machinery and equipment.     

Risk management and value creation: new evidence for Brazilian non-financial companies

The practice of financial risk management with derivatives has received attention both from the academia and the market. In Brazil, there is a growing use of these instruments by companies, in line with the growth of such market in the global economy. This article aims to investigate the relationship between the financial risk management and the value creation to the shareholder for non-financial Brazilian companies. The sample was made up of 1794 firm-year observations from 2006 to 2014. Results obtained via panel data, including the GMM, point out that companies which used derivatives did not add value during the period analysed. An explanation for this result is that most of the companies use derivatives in order to manage the cash flow and not to add value.     

The effect of firm size and firm activities on CSR practices of selected Chinese-Filipino-owned MSMEs in Metro Manila

Socially-responsible business and ethical behavior of companies have been of interest to academia and practice for decades, but the focus has almost exclusively been on large corporations, while small and medium-sized enterprises （SMEs） have not received as much attention （Hammann, et al., 2009）. Worthington, et al （2006） recognized the need to encourage socially-responsible business practices among the 90 per cent or more of the world＇s businesses that are classified as SMEs. Perrini, et al （2007） found that size explains the differences in firms＇ willingness to define and implement such specific corporate social responsibility （CSR） strategies, while Murillo and Lozano （2006） concluded that it still remains to be explored whether manufacturing companies tend to apply CSR more extensively, or whether businesses oriented to other business have a tendency to incorporate CSR into their management patterns to a higher degree. Moreover, President Gloria Macapagal-Arroyo, in her 7 June, 2002 speech, recognized the importance of Chinese-Filipinos in helping improve the Philippine economy, and yet, not much research had been done on this sub-sector. Thus, this paper focuses on the effect of finn size and finn activities on the social responsibility practices of selected 30 micro, small and medium-sized enterprises （MSMEs） in Metro Manila which are owned by Chinese-Filipinos. Survey questionnaires and interview were used for gathering data, while a correlations test was used to analyze the data and to conclude whether finn size and finn activities have an effect on the sampled companies＇ CSR practices.     

POSITIVE SELF‐IMAGE IN TOURNAMENTS*

This article analyzes the implications of worker overestimation of productivity for firms in which incentives take the form of tournaments. Each worker overestimates his productivity but is aware of the bias in his opponent's self‐assessment. The manager of the firm, on the other hand, correctly assesses workers' productivities and self‐beliefs when setting tournament prizes. The article shows that, under a variety of circumstances, firms can benefit from worker positive self‐image. The article also shows that worker positive self‐image can improve welfare in tournaments. In contrast, workers' utility declines due to their own misguided choices.     

Forecasting core competencies in an R&D environment

This study, carried out in 1998, aimed to develop a method of forecasting core competencies in an agricultural research organization, using the Delphi Technique. First, based on a survey of internal documents and interviews, nine organizational core competencies and their specific components (human competencies) were defined, and expert judges identified. These judges responded to a questionnaire, in which the importance of the future human competencies was assessed and the organization's existing human capacity was evaluated. Means were calculated for both judgements and changes were made in various definitions, based on the experts' comments. Another questionnaire was designed and sent out to an expanded panel of judges to confirm or to revise the priority mean scores obtained or to add scores in the case of competencies that entered later. Factor analysis and reliability scores have demonstrated internal and inter‐competency consistencies. Technological Innovation Management and Geo‐processing appeared as the top priorities and Plant Pathology as the least priority. Priorities for each human competency were also calculated and they have been helpful for decision‐making concerning the selection and graduate training of researchers on the organization studied.     

Can market power sustain endogenous growth in overlapping-generations economies?

Summary. Sustained endogenous growth is known to be impossible in OLG one-sector models without non-convexities and externalities, unless income is redistributed to the young generation. No redistribution proper is however necessary, as shown in two simple examples, if positive profits accruing to young monopolistic entrepreneurs can be sustained in equilibrium, and/or if young unionised workers can guarantee a non-vanishing share of aggregate income. In this context, market power appears, in two different forms, as a significant source of sustained endogenous growth. Received: October 3, 2000; revised version: March 9, 2001