This paper studies timing games in continuous time where payoffs are stochastic and strongly Markovian. The main interest is in characterizing equilibria where players preempt each other along almost every sample path. It is found that the existence of such preemption equilibria depends...

Voice over Internet Protocol (VoIP) such as Skype that enables users to make free internet-based calls to other users has been seen as a threat to voice revenues by traditional network operators. While some mobile network operators (MNOs) attempt to block Skype's entry on their networks, some...

We take a general model of externalities matching the Cooper & John framework with identical agents. If each agent's payoff depends on a parameter interpreted as the favourableness of the environment, we explore how the number of Nash equilibria varies with this parameter, especially in the...

Entry is recognized to be an important issue in macro models considering imperfectly competitive markets. However, two lines of research have been kept apart: the homogeneous-product oligopoly approach, where entry means more firms in the industry, and the monopolistic competition approach,...

The theoretical analysis of merger poses a number of paradoxes. If firms compete in prices, a merger is profitable for all parties involved. Outsiders, however, free-ride and earn higher profits than insiders. The "spokes model" is a recently introduced framework to study n-firms spatial...

The spokes model is a recent framework to study n-firms spatial competition. In a spatial framework firms delivering their product can price discriminate with respect to consumers’ location. Conditions for the existence of a price-location equilibrium of the spokes model with delivered product...

The effects of non-linear pricing are determined by the relationship between the demand and the technological structure of the market. This paper focuses on a model in which firms supply a homogeneous product in two different sizes. Information about consumers' reservation prices is incomplete...

This paper shows that the standard and deferred filtration structural models of corporate default are isomorphic, allowing the insights of the standard full information setting to be carried over to the more complex case of asymmetric information. It shows that the accounting lag, which provides...

This paper presents a tractable bond valuation model, which further develops the approach proposed by Piazzesi (2005). The short term inter-bank interest rate is equal to the target rate set by the central bank plus a spread. Bond yields are driven by the intensities that determine the...

This paper presents an equity valuation model that employs risk-neutral valuation under stochastic interest rates along the lines of Ohlson and Feltham (1999). Closed form valuation formulae for equities are presented in a discrete time setting whereby the short term interest rate is modelled by...