Thresholds defined on the level and change in the HHI (Herfindahl- Hirschmann Index) applied to market shares seem to be the main instrument to select notified mergers for investigation in both the EU and US. We question the use of such a selection rule in di?erentiated products industries. We...

Given that brands (products) are location specific in terms of coverage of retail stores, we allow consumers to have preferences over location and products to carry distribution costs, alongside preferences and costs over other observable and unobservable product characteristics. We embed these...

Given that brands (products) are location specific in terms of coverage of retail stores, we allow consumers to have preferences over location and products to carry distribution costs, alongside preferences and costs over other observable and unobservable product characteristics. We embed these...

This paper provides an empirical analysis of own- and cross-price elasticities of substitution for the 1989-2000 Italian automobile industry. We use product-level data consistent with a structural model of equilibrium in a differentiated products oligopolistic industry and follow a random...

Thresholds defined on the level and change in the HHI (Herfindahl- Hirschmann Index) applied to market shares seem to be the main instrument to select notified mergers for investigation in both the EU and US. We question the use of such a selection rule in di?erentiated products industries. We...

This paper provides an empirical analysis of own- and cross-price elasticities of substitution for the 1989-2000 Italian automobile industry. We use product-level data consistent with a structural model of equilibrium in a differentiated products oligopolistic industry and follow a random...

The international rollout of residential smart meters has increased considerably in recent years. The improved consumption feedback provided, and in particular, the installation of in-house displays, has been shown to significantly reduce residential electricity demand in some international...

Increasing numbers of countries require mobile telephone networks to offer mobile number portability (MNP). MNP allows customers who wish to switch mobile operator to keep their mobile numbers, avoiding the costs of switching to new numbers. Ex ante assessments suggest that MNP should reduce...

When assessing the likely net impact of regulation, many jurisdictions test for specific effects on areas of concern, such as small businesses or the environment, as well as for more generalised costs and benefits. This paper considers how best to design a negative-clearance test for the...