Does Diversification Destroy Value? Evidence from Industry Shocks
42 Pages Posted: 2 May 2011 Last revised: 29 Oct 2022
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Does Diversification Destroy Value? Evidence from Industry Shocks
Date Written: July 2000
Abstract
Does corporate diversification reduce shareholder value? Since firms endogenously choose to diversify, exogenous variation in diversification is necessary in order to draw inferences about the causal effect. We examine changes in the within-firm dispersion of industry investment, or diversity.' We find that exogenous changes in diversity, due to changes in industry investment, are negatively related to firm value. Thus diversification destroys value, consistent with the inefficient internal capital markets hypothesis. This finding is not caused by measurement error. We also find that exogenous changes in industry cash flow diversity are negative related to firm value.
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