Copulas have become recently a field of great importance due to their ability to describe complicated dependence structures. In particular, copulas model separate the marginal properties and the existing dependence of the data, allowing for flexible and realistic modelling far from simplistic...

In this paper we capture the implied distribution from option market data using non-recombining binomial trees allowing the local volatility to be a function of the underlying asset and of time. We elaborate on the initial guess for the volatility term structure, and use non-linear constrained...

The asymptotic distribution of the QML estimator for GARCH processes, with coefficients possibly equal to zero, is established. This distribution is the projection of a normal vector distribution onto a convex cone. The results are derived under mild conditions which, for important subclasses,...

This paper introduces a form of boundedly-rational expectations into an otherwise standard New Keynesian Phillips curve. The representative agent's forecast rule is optimal, conditional on a perceived law of motion for inflation and observed moments of the inflation time series. The perceived...

The aim of this paper is to show, within the mean-variance framework, how the market belief can be constructed as the result of the aggregation of heterogeneous beliefs and how the market equilibrium prices of risky assets can thus be determined. The heterogeneous beliefs are defined in terms of...

This paper investigates whether insiders use private information in their decision to exercise executive stock options. Consistent with existing research, exercises overall do not yield subsequent abnormal returns. Categorising exercises by the proportion of stock sold at exercise yields a...

Within the context of an agent-based model, model selection by the economic agents is introduced and investigated. To achieve this, a specific agent, the “economic research instituteâ€, is set up and produces regular forecasts of the economy which are published to the economic agents....

A dynamic Tobit model with Time-varying parameters is proposed for the daily reaction function of the Open Market Desk of the US Federal Reserve. Such a model offers a more realistic depiction of the Desk's behavior than those of past contributions in the literature as it allows for both...

We propose the use of a classical tool in PDE theory, the parametrix method, to build approximate solutions to generic parabolic models for pricing and hedging contingent claims. We obtain an expansion for the price of an option using as starting point the classical Black and Scholes formula....

We investigate possible determinants of the increase of household debt and smaller consumption fluctuations since the 1980s in the US. We use a heterogeneous-agent model, in which labor income is risky and markets are incomplete. Consumers use durables not only as collateral for their debt but...