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...

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...

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...

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...

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...

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....

I review 150 textbooks on corporate finance and valuation published between 1979 and 2009 by authors such as Brealey, Myers, Copeland, Damodaran, Merton, Ross, Bruner, Bodie, Penman, Arzac¿ and find that their recommendations regarding the equity premium range from 3% to 10%, and that 51 books...

During 2008, only 2 of the companies included in the Dow Jones (Wall Mart and McDonalds) created value, while in 2007 16 of these companies did it. The market value of the 300 companies was $2.9 trillion in 2008 and $4.4 trillion in 2007. The top shareholder value creators in 2004 were Exxon,...