Building on a model of the interaction of risk-averse firms that compete in forward and spot markets, we develop an empirical strategy to test whether oligopolistic firms use forward contracts for strategic motives, for risk-hedging, or for both. An increase in the number of players weakens the...

The 1990s witnessed significant regulatory changes in several Spanish network industries such as electricity, telecommunications, natural gas and oil. This article provides an assessment of these developments, trying to ascertain what goals policy-makers attempted to achieve with the...

This paper presents new data on telecommunications reform for a cross section of countries. We measure telecommunications reform along two dimensions: entry barriers and regulatory independence. This data set is combined with a comprehensive set of performance, institutional and political data...

I present a vertical differentiation model to assess the quality-wise strategy of an incumbent telecommunications operator under open access regimes. I show that it is always profitable for an incumbent subject to wholesale regulation to degrade wholesale quality in a non-recoverable fashion....

The economics of federalism is a broad discipline with more than five decades of experience. It may shed light on how regulatory jurisdiction is allocated in EU electricity and telecommunications markets. Specifically, this paper assesses the evolution of reform up to and including the third EU...

In this paper, we study how access pricing affects network competition when subscription demand is elastic and each network uses non-linear prices and can apply termination-based price discrimination. In the case of a fixed per minute termination charge, we find that a reduction of the...

We re-examine the literature on mobile termination in the presence of network externalities. Externalities arise when firms discriminate between on- and off-net calls or when subscription demand is elastic. This literature predicts that profit decreases and consumer surplus increases in...

This paper presents new data, in the form of four indices, on liberalization policies and the independence of regulators for a cross-section of countries. These indices are combined with a comprehensive set of performance, institutional and political data to analyze both the determinants and the...

2003 was a good year for the shareholders of the companies in the Euro Stoxx 50: the shareholder value creation of these 50 companies was €150,016 million. The companies that created most value for their shareholder were Siemens (€18,778 million), Telefonica (15,382) and BSCH (12,443). The...

We prove that in a world without leverage cost the relationship between the levered beta ( L) and the unlevered beta ( u) is the No-costs-of-leverage formula: L = u + ( u - d) D (1 - T) / E. We also analyze 6 alternative valuation theories proposed in the literature to estimate the relationship...