This article tries to solve the portfolio inflation hedging problem by introducing a new class of dynamic trading strategies derived from classic portfolio insurance techniques adapted to the real world. These strategies aim at yielding higher returns on a risk-adjusted basis than regular...

We propose two tests for the equality of covariance matrices between two high-dimensional populations. One test is on the whole variance-covariance matrices, and the other is on offdiagonal sub-matrices which define the covariance between two non-overlapping segments of the high-dimensional...

We extend the pioneering work of Aumann–Serrano by presenting an index of riskiness for gambles with either positive or negative expectations. It can be of use for a variety of abstract behaviors, when adapting the framework of either Expected-Utility Theory or Prospect Theory.

This collection of articles in investment and portfolio management spans the thirty-five-year collaborative effort of two key figures in finance. Each of the nine sections begins with an overview that introduces the main contributions of the pieces and traces the development of the field. Each...

Traditional portfolio theory stated that diversified portfolio is optimised regarding returns. It can generate the highest return with relatively lowest risk. Market risk cannot be diversified, so the most intelligent approach is to buy and hold assets in the long run. Therefore, the market...

This paper presents an evaluation of the so-called Washington Consensus economic policies in the case of Ecuador during the eighties and the nineties in a game theoretical framework. In a multi-period game, in which it acts as Stackelberg leader, the government minimizes a quadratic loss...

Luego de examinar el marco teórico y conceptual de la teoría del crecimiento y del comercio internacional, se mide la eficacia de la apertura comercial impulsada por el TLCAN para fomentar el intercambio comercial. Asimismo, se evalúan los efectos de éste en el crecimiento económico de los...

We estimate DEA (Data Envelopment Analysis) technical efficiency scores for 1170 Brazilian hospitals included in the SUS (Central Health System) using a recently proposed method that combines bootstrap and jackknife resampling to eliminate the influence of outliers and possible measurement and...

The transition density of a diffusion process does not admit an explicit expression in general, which prevents the full maximum likelihood estimation (MLE) based on discretely observed sample paths. Aït-Sahalia [J. Finance 54 (1999) 1361–1395; Econometrica 70 (2002) 223–262] proposed asymptotic...

In the physical world the “identity” of something is taken generally as a given; an apple is an apple; this apple is this apple. When dealing with planetary structure and extension into space, however, the problem of the planet’s “identity” in the surrounding cosmos is writ large. What...