An incomplete market driven by a pair of Wiener and Poisson processes is considered. The range of European and American claim prices is determined.

Simple sufficient conditions for the existence of a unique equivalent martingale measure are provided. Furthermore, these conditions give us a handle on situations where an equivalent martingale measure cannot exist. The existence of a unique equivalent martingale measure is of relevance to...

One of the main reasons why workers’ enterprises (WE) still represent a relevant chunk of the economy may lie in some affinities with conventional profit maximizing firms. To prove this, we compare the entry policies of WEs and conventional firms when they can decide size at entry while having...

This paper looks at speculative behavior in the international oil market. Much of the blame for oil-market turbulence has been placed on speculators, particularly hedge funds. Speculative capital has been characterized as “hot money,” with capital flows driven by “herding,”...

This paper develops a method for pricing bivariate contingent claims under General Autoregressive Conditionally Heteroskedastic (GARCH) process. As the association between the underlying assets may vary over time, the dynamic copula with time-varying parameter offers a better alternative to any...

I present an attempt to construct multi-period, finite horizon extensions to the well -known two- period financial innovations literature. I first extend the definition of competitive equilibrium with innovations. It is shown that, with a dominating house

We compute the expected value and the variance of the discretization error of delta hedging and of other strategies in the presence of proportional transaction costs. The method, based on Laplace transform, applies to a fairly general class of models, including Black-Scholes, Merton's...

[EN] The irreversibility of the investment expenditures in a fishery and the high degree of uncertainty attaching to the price of the fishing resources make the evaluation of investment opportunity in a fishery particularly difficult. The net-present-value proposes the following rule: "Invest in...

This paper proposes a semiparametric option pricing model with liquidity, as proxied by the relative bid-ask spread. The nonparametric volatility function with liquidity as an explanatory variable is estimated using the Symmetrized Nearest Neighbors (SNN) estimator rather than the traditional...

[EN] The valuation of development opportunity of a fishery is made particularly difficult by the high degree of uncertainty attaching to the price of the fishing resource. The net-present-value and other discounted cash-flows cannot properly capture the management s flexibility, thus they may...