La récurrence des crises financières constitue un des enseignements marquants de l’histoire économique. Ces crises se ressemblent sous certains aspects : surendettement généralisé, panique provoquée par la dévaluation brutale d’actifs financiers, etc. Dès lors, en quoi consiste la...

This paper empirically compares a variety of firm-value-based models of contingent claims. We formulate a general model which takes the perpetual coupon bond models of Merton (1974), Leland (1994) and Anderson, Sundaresan and Tychon (1996), as well as some immediate generalizations thereof, as...

In this note we propose a general testing procedure for parametric models based on Bartlett Identities. A well-know example is the Information Matrix test, which is based on the Bartlett Identity of order 1. The Identities are shown to induce a sequence of testable restrictions on the data...

Two extensions of a parametric model are proposed, each one involving the score function of an alternative parametric model. We show that the encompassing hypothesis is equivalent to standard conditions on the score of each of the extended models. The condition on the first extension gives rise...

The aim of this paper is to analyze the sensitivity of Value at Risk (VaR) with respect to portfolio allocation. We derive analytical expressions for the first and second derivatives of the Value at Risk, and explain how they can be used to simplify statistical inference and to perform a local...

This paper introduces two new nonparametric estimators for probability density functions which have support on the non-negative half-line. These kernel estimators are based on some inverse Gaussian and reciprocal inverse Gaussian probability density functions used as kernels. We show that they...

We use enterprise data to study the determinants of investment in Czech industry during the period from 1993 through 1994, a period when the transition toward a market economy was rapidly gaining momentum. We investigate accelerator type models modified to include financial variables intended to...

This note shows that adding monotonicity or convexity constraints on the regression function does not restore well-posedness in nonparametric instrumental variable regression. The minimum distance problem without regularisation is still locally ill-posed