Event Studies in Merger Analysis: Review and an Application Using U.S. TNIC Data

Timo Klein
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Timo Klein: University of Amsterdam

No 20-005/VII, Tinbergen Institute Discussion Papers from Tinbergen Institute

Abstract: There is a growing concern that U.S. merger control may have been too lenient, but empirical evidence remains limited. After reviewing event studies as a method to acquire empirical insights into the competitive effects of mergers, I propose a novel application using Hoberg-Phillips TNIC data. This application allows for the ready approximation of abnormal stock market returns of likely competitors to 1,751 of the largest U.S. mergers since 1997. I document that likely competitors experience on average an abnormal return of close to one percent around a merger announcement. Abnormal returns are also strongly associated with concerns of market power, which suggests that competitors benefit at least in part because of an anticipation of anti-competitive effects -- and hence insufficient merger control.

Keywords: Mergers; Antitrust; Event Studies; Text-Based Network Industry Classification (search for similar items in EconPapers)
JEL-codes: G14 G34 L13 L40 (search for similar items in EconPapers)
Date: 2020-01-27, Revised 2020-03-31
New Economics Papers: this item is included in nep-big, nep-com and nep-ind
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