NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Poison or Placebo? Evidence on the Deterrent and Wealth Effects of Modern Antitakeover Measures

Robert Comment, G. William Schwert

NBER Working Paper No. 4316 (Also Reprint No. r2014)
Issued in April 1993
NBER Program(s):Corporate Finance

This paper provides large-sample evidence that poison pill rights issues, control share statutes, and business combination statutes do not deter takeovers and are unlikely to have caused the demise of the 1980s market for corporate control, even though 87% of all exchange-listed firms are now covered by one or another of these antitakeover measures. We show that poison pills and control share statutes are reliably associated with higher takeover premiums for selling shareholders, both unconditionally and conditional on a successful takeover, and we provide updated event-study evidence for the three-quarters of all poison pills not yet analyzed.

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Document Object Identifier (DOI): 10.3386/w4316

Published: Journal of Financial Economics, vol. 39, no. 1, pp. 3-43, (September 1995) citation courtesy of

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