Browsing Interdisciplinary Centres & Research Groups by Subject "L81"

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Firm size and market power in carbonated soft drinks

Whelan, Ciara ; Walsh, Patrick P. (Springer Science + Business Media, 2003)

Sutton (1998) offers us a simple way to model firm size distributions across differentiated products industries. We analyse the implications of this approach for company markups using a structural model for a specific ...
Is equating market share to market power a sound economic principle?

Whelan, Ciara (Statistical and Social Inquiry Society of Ireland, 2003)

There is a long history of mapping market structure into market power in economic analysis. This paper addresses the validity of this principle for both homogenous and differentiated products industries. While mapping ...
Merger control in differentiated product industries

Mariuzzo, Franco ; Walsh, Patrick P. ; Whelan, Ciara (University College Dublin. School of Economics, 2005-05)

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 ...