¿Han sido el IBEX35 y el IPC definiciones financieramente eficientes del portafolio de mercado?

The present paper questions the financial efficiency of the most used market portfolio proxies in Spain and Mexico (IBEX35 and IPC) in order to determine if these can be considered a proper market portfolio proxy. The paper questions if they can be used as “neutrals”, according to Black & Litterman (1992) proposals in portfolio management. For this purpose, two discrete event simulations that use the Markowtiz-Tobin-Sharpe-Linter model (Markowitz, 1987, p.5) are performed with monthly data of the stock members of these indices in a February 2001 to December 2010 time window. The results are compared by using the Sharpe ratio (Sharpe, 1966) and show that the equilibrium assumptions in the market do not hold, leading to conclude that these market portfolio proxies are inefficient.     

Pricing Participating Inflation Retirement Funds Through Option Modeling and Copulas

Abstract

Pension plans and life insurances offering minimum performance guarantees are very common worldwide. In the Brazilian market, the customers of a common type of defined contribution plan have the right to receive, over their savings, the positive difference between the return of a specified investment fund, usually a fixed income fund, and the minimum guaranteed rate, commonly defined as the composition of a fixed interest rate and a floating inflation rate. This instrument can be characterized as an option to exchange one asset, the minimum guaranteed rate, for another, the return of the specified investment fund. In this paper we provide a closed formula to evaluate this liability that depends on two stochastic rates assuming bivariate normality. We also explore the use of copulas for the modeling of the dependence structure and price the options using Monte Carlo simulation to compare the effects of the copula specification in their values. An application with real data is provided. The model makes use of a one-factor Vasicek framework for the term structures of interest rate and inflation rate.     

Banking competition and economic growth: cross-country evidence

The aim of this paper is to analyse the effect of banking competition on industry economic growth using both structural measures of competition and measures based on the new empirical industrial organisation perspective. The evidence obtained in the period 1993–2003 for a sample of 53 sectors in 21 countries indicates that financial development promotes economic growth. The results also show that bank monopoly power has an inverted-U-shaped effect on economic growth, suggesting that bank market power has its highest growth effect at intermediate values. The latter result is consistent with the literature on relationship lending, which argues that bank competition can have a negative effect on the availability of finance for companies that are informationally more opaque.     

Five charges against the precautionary principle

We defend the precautionary principle against five common charges, namely that it is ill-defined, absolutist, and a value judgement, increases risk-taking, and marginalizes science. We argue, first, that the precautionary principle is, in principle, no more vague or ill-defined than other decision principles and like them it can be made precise through elaboration and practice. Second, the precautionary principle need not be absolutist in the way that has been claimed. A way to avoid this is through combining the precautionary principle with a specification of the degree of scientific evidence required to trigger precaution, and/or with some version of the de minimis rule. Third, the precautionary principle does not lead to increased risk-taking, unless the framing is too narrow, and then the same problem applies to other decision rules as well. Fourth, the precautionary principle is indeed value-based, but only to the same extent as other decision rules. Fifth and last, the precautionary principle is not unscientific other than in the weak sense of not being exclusively based on science. In that sense all decision rules are unscientific.     

Die stochastische Modellierung von Großschäden für den Einsatz in internen Risikomodellen der Schadenversicherung

Along with individual corporate management and regulatory matters for instance within EU regime Solvency II, Internal Risk Models are very important for major general insurance companies. Of crucial importance in building these internal models, is the stochastic modelling of large claims and in particular, the selection and parameterization of suitable probability distributions for the amount and number of claims based on empirical data. To this end, in practice, a visually-based methodology is more appropriate and workable than strict mathematical approaches. Based on a practical case study, this paper provides some insight into a visually-based methodology for internal risk models.     

Sustainability: The search for the integral worldview

The sustainability problem is described as a process of recurrent destabilization of societal value orientations or worldviews. These worldviews represent both value orientations with respect to ‘quality of life’ and mental maps about the surrounding world. The many different worldviews which shape society appear to be part of an overall integral worldview which can be deduced from societal enquiries and from the experiences of history and philosophy over many centuries. This integral worldview is defined by the vertical contrast between idealism and materialism and the horizontal contrast between uniformity and diversity. Due to a number of societal and psychological centrifugal forces, worldviews become one-sided and finally end in fundamentalist value orientations which are synonym with overshoot, collapse and crisis. Examples are religious fundamentalism and related wars, communism, nazism, the ecological crisis as well as the recent financial crisis.The solution to these sustainability problems has to be found in the timely recognition and compensation of the destabilizing centrifugal forces. The resulting integral worldview is synonym with ‘human dignity’. The thus defined time independent notion of human dignity defines a new ethical framework and solves the paradox between the needs of present and future generations in Brundtland's original definition of sustainable development.     

Governance of flexible mobile service platforms

Development of advanced mobile Internet services requires flexible service platforms. Every service offering needs generic functionalities like security, billing and customer data management. Such functionalities used to be integrated in the mobile network infrastructure but are now offered by competing service platforms. Future service platforms might be offered by operators but can also be embedded in the mobile phone or at the systems of the service providers. Studying flexibility of service platforms requires technological as well as strategic analysis, and should take into account the perspective of multiple stakeholders. Where to locate service platforms is not just a technological matter as it greatly influences flexibility of both service providers and end-users. This paper analyzes how various service platform technologies that are located at operators, mobile phone and service providers influence flexibility. We find that no single service platform offers superior flexibility to both service providers and end-users.     

Where firms choose to disclose voluntary environmental information

Corporate environmental performance is of increasing importance to investors, public policy makers and the general public. Firms disclose environmental information (mostly) voluntarily in their annual reports and on their websites. These disclosures are important, because they provide environmental performance information and influence capital markets. We compare environmental disclosure in annual reports and on websites with a long-term (bad) and a short-term (crisis) environmental performance measure. We find evidence to support our hypotheses that different levels of environmental disclosure are made in annual reports and on websites under different conditions. More specifically, firms disclose more environmental information on their websites when faced with an environmental crisis and more in their annual reports when they have a bad environmental reputation.     

Bank-Specific Daily Interest Rate Adjustment in the Dutch Mortgage Market

This paper presents an empirical analysis of the interest rate setting behavior of the four largest banks in the Dutch mortgage market, using advertised interest rates at a daily frequency. The evidence for the long run pricing behaviour suggests that the banks operate in a competitive environment as they base their interest rates on funding cost. However, two banks appear to be less cost sensitive than the others. In the short run, most of the banks adjust their rates less strongly to funding cost increases than to decreases, which suggests competitive pressures. For one bank significant evidence is found for a quicker response to negative than to positive deviations of actual from desired interest rates.     

The information content of trade credit

During 1992–2007, suppliers financed almost 10% of the total assets of US listed firms. This intensive usage of trade credit is puzzling in the light of its high (implicit) costs. By arguing that trade credit use provides valuable information to outside investors, we first derive a theoretical model that predicts a positive correlation between trade credit use and the quality of the firm’s investments. Then, using several proxies for firm’s investment quality (Z-score, return on assets, and long-run abnormal returns), we show that this prediction receives strong support from a large sample of US firms.