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Who Makes Acquisitions? CEO Overconfidence and the Market's ReactionUlrike MalmendierUniversity of California, Berkeley - Department of Economics; National Bureau of Economic Research (NBER); Centre for Economic Policy Research (CEPR); Institute for the Study of Labor (IZA) Geoffrey A. TateUniversity of North Carolina (UNC) at Chapel Hill - Kenan-Flagler Business School October 2004 NBER Working Paper No. w10813 Abstract: Overconfident CEOs over-estimate their ability to generate returns. Thus, on the margin, they undertake mergers that destroy value. They also perceive outside finance to be over-priced. We classify CEOs as overconfident when, despite their under-diversification, they hold options on company stock until expiration. We find that these CEOs are more acquisitive on average, particularly via diversifying deals. The effects are largest in firms with abundant cash and untapped debt capacity. Using press coverage as "confident" or "optimistic" to measure overconfidence confirms these results. We also find that the market reacts significantly more negatively to takeover bids by overconfident managers.
Number of Pages in PDF File: 54 working papers seriesDate posted: October 18, 2004Suggested CitationContact Information
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