Performance maximization of actively managed funds

A growing literature suggests that, even in the absence of any ability to predict returns, holding options on the benchmarks or trading frequently can generate positive alpha. The ratio of alpha to its tracking error appraises a fund's performance. This paper derives the performance-maximizing strategy, which turns out to be a variant of a buy-write strategy, and the least upper bound on such performance enhancement. If common equity indices are used as benchmarks, the potential alpha generated from trading frequently can be substantial in magnitude, but it carries considerable risk. The statistical significance in estimated alpha is low, and the probability of a negative alpha is high. The performance enhancement from holding options can be significant - both economically and statistically - if the options' implied volatilities are higher than the volatilities of the benchmark returns. The performance-maximizing strategy derived in this paper is different from the strategies that switch portfolio exposure to the benchmarks. The exposure-switching strategies are not promising unless the switching is based on superior information.     

Assessing financial contagion in the interbank market: Maximum entropy versus observed interbank lending patterns

Interbank markets allow banks to cope with specific liquidity shocks. At the same time, they may represent a channel for contagion as a bank default may spread to other banks through interbank linkages. This paper analyses how contagion propagates within the Italian interbank market using a unique data set including actual bilateral exposures. Based on the availability of information on actual bilateral exposures for all Italian banks, the results obtained by assuming the maximum entropy are compared with those reflecting the observed structure of interbank claims. The comparison indicates that, under certain circumstances, depending on the structure of the interbank linkages, the recovery rates of interbank exposures and banks’ capitalisation, the maximum entropy approach overrates the scope for contagion.     

A test for the too-big-to-fail hypothesis for European banks during the financial crisis

Motivated by the theoretical prediction of the opportunistic behaviour of large banks that face expected public intervention, we test a full and a partial form of the too-big-to-fail (TBTF) hypothesis. The full form of the hypothesis implies the increase in the risk undertakings and profitability of banks that exceed a certain dimension; the partial form of the hypothesis implies only an augmented risk appetite of large banks compared to their smaller counterparts. The examined area is the European banking industry, whose behaviour is observed over the first wave of the present financial crisis (2007/09). The estimation of a quadratic fit that links change in a bank’s credit risk profile and profitability retention rates with a bank’s size suggests the existence of a partial form of the TBTF hypothesis. However, a more precise, local rolling windows estimation of the size sensitivities reveals that large banks – those whose liabilities exceed approximately 2% of the country of origin’s GDP (15% of our sample) – show an increase in credit risk profile and a superior capability of retaining higher ROA scores, vis-à-vis their smaller counterparts. With the caveats of our investigation, we interpret these results as evidence of a full form of the TBTF hypothesis.     

Environmental and Societal Attitudes to Working Hours in Gendered Perspective: Patterns,Preferences and Policy

ABSTRACT

This article begins from the premise that environmental degradation is a profound and present threat and that work time reduction–with an associated reduction in consumption–is one of a number of strategies that can be adopted to combat it. As a precursor to looking at how such policies can be supported, our research questions whether environmental attitudes are congruent with work time patterns and preferences. Our initial hypothesis was that those who care most for the environment would work fewer hours than those who exhibit lower levels of environmental concern, and prefer to do so. However, contra our expectations, our empirical analysis of the European Social Survey shows that those who state they care most about the environment are more likely to work longer hours, and prefer to do so. Overall, men tend to be less concerned about the environment, and work longer. Caring responsibilities, in contrast, fall disproportionately on women. We argue that this reflects traditional gender roles that are a residual from the social norm of the male breadwinner model. Given work time reduction as an environmental policy, the task is to influence preferences and ‘green’ human behaviour, especially among men.     

On Endogenous Efficiency in Public and Private Firms

This paper reconsiders a model proposed by De Fraja (1993) to compare public and private production under complete and incomplete information. It is argued, in contrast to previous results, that such a model provides no convincing grounds to sustain the productive superiority of public ownership. It is also suggested that meaningful comparisons of efficiency require settings where differences in ownership imply different implementation constraints.     

Targeting welfare in Italy: old problems and perspectives on reform

This paper has two principal objectives. Using a tax‐benefit microsimulation model and the 1998 micro data of the Bank of Italy survey of household income and wealth, we first study the distributional effects of the current Italian income maintenance system and highlight its main defects and limitations, concerning in particular its unequal coverage of the population and its low efficiency in fighting poverty. The second aim is to describe and analyse the reforms recently implemented in this field; in particular, the Italian government has reformed the targeting criteria and introduced three new cash transfers. We describe these reforms both in their institutional characteristics and in their likely distributional consequences, and examine whether and to what extent they are able to overcome the shortcomings of the current system.     

The emergence of technology systems: knowledge production and distribution in the case of the Emilian plastics district

The emergence of technology systems is the result of interdependentdynamics of the generation and diffusion of complementary bitsof localised technological knowledge. Technological communicationis the crucial element assessing the collective conditions underwhich technological knowledge is accumulated and diffused. Thecase study of the emerging Emilian technological system in theplastics sector shows that the synchronic and diachronic localisedinteractions among industrial dynamics, institutional R&Defforts and technological interrelatedness are the determinantsof the systematic production, accumulation and distributionof localised technological knowledge, in turn explaining theorigin and development of the technology system itself.