DP5016 The Insiders' Dilemma: An Experiment on Merger Formation

Author(s): Tobias Lindqvist, Johan Stennek
Publication Date: April 2005
Keyword(s): antitrust, coalition formation, experiment, insiders' dilemma, mergers
JEL(s): C78, C92, G34, L13, L41
Programme Areas: Industrial Organization
Link to this Page: cepr.org/active/publications/discussion_papers/dp.php?dpno=5016

This paper tests the insiders? dilemma hypothesis in a laboratory experiment. The insiders? dilemma means that a profitable merger does not occur, because it is even more profitable for each firm to unilaterally stand as an outsider (Stigler, 1950; Kamien and Zang, 1990 and 1993). The experimental data provides support for the insiders? dilemma, and thereby for endogenous rather than exogenous merger theory. More surprisingly, our data suggests that fairness (or relative performance) considerations also make profitable mergers difficult. Mergers that should occur in equilibrium do not, since they require an unequal split of surplus.