This work presents an equilibrium model of diversification through merger formation. Due to moral hazard problems, poorly capitalized firms are credit rationed and may seek to alleviate the incentive problem (and thereby raise external funds) by either merging, employing a monitor or a...

Using a new and extensive micro data set we investigate the impact of a change in international competitive pressure following a real exchange shock on multi-product firms’ product mix. We only find weak evidence for the core competencies hypothesis, according to which, we would expect the...

We test whether and how the adoption of the euro, narrowly defined as the end of competitive devaluations, has affected member states' productive structures, distinguishing between within and across sector reallocation. We find evidence that the euro has been accompanied by a reallocation of...

We model the impact credit constraints and market risk have on the vertical relationships between firms in the supply chain. Firms which might face credit constraints in future investments become endogenously risk averse when accumulating pledgable income. In the short run, the optimal supply...

This paper surveys recent work on competition in markets in which consumers face costs to switching between competing firms' products, even when all firms' products are functionally identical. I address issues in macroeconomics, international trade and industrial organization: In a market with...

We construct a model where the equilibrium organization of firms changes as an economy approaches the world technology frontier. In vertically integrated firms, owners (managers) have to spend time both on production and innovation activities, and this creates managerial overload, and...

We analyse strategic interaction in R&D internationalization decisions by two multinational firms competing both abroad and in their home markets and examine different incentives for foreign R&D faced by technology leaders and technology laggards. The model takes into account the impact of local...

We develop a simple growth model with imperfect competition in which demand conditions can affect the dynamics of capital accumulation, hindering or enhancing growth. In our model the elasticity of the demand schedule faced by a typical firm depends on the aggregate savings rate. The latter...

The impact of exchange rate fluctuations on international trade has long been a major concern for policy-makers. This is particularly the case in Europe, where countries trade extensively with each other. The crisis that began in the Summer of 1992 generated increased exchange rate fluctuations...

By choosing their organizations, firms trade-off productive efficiency and time spent in implementing innovation. We embed such a productivity/reactivity trade-off in a growth model with creative destruction. We first highlight the specific impact of time in firm competition: in addition to...