Antitrust & Competition Policy Blog

Editor: D. Daniel Sokol
University of Florida
Levin College of Law

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Wednesday, September 3, 2008

Mergers in Auctions with an Incumbent Advantage

Posted by D. Daniel Sokol

Luke Froeb (Vanderbilt University - Owen Graduate School of Management), Mikhael Shor (Vanderbilt University - Owen Graduate School of Management) and Steven Tschantz (Vanderbilt University - Department of Mathematics) have a fascinating paper out on Mergers in Auctions with an Incumbent Advantage.

ABSTRACT:  When the winner of one auction gains a cost advantage in the next, bids reflect not only the value of winning the auction, but also the value of gaining an incumbent advantage in future auctions. If a larger firm's advantage derives from a cost or product advantage, it has a greater chance of holding onto incumbency status which, in turn, increases the value it places on gaining incumbency. As a consequence, larger firms bid more aggressively than their smaller rivals, where "size" is measured by the probability of winning. In this environment, mergers eliminate competition among the merged firms but they also change bidding behavior by both merging and non-merging firms. Computational experiments suggest that the scope for pro-competitive mergers is much wider than in auctions without an incumbent advantage. In particular, mergers among smaller firms are likely to be pro-competitive because they tend to create better losers, i.e., firms who bid more aggressively but still lose a large part of the time.

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