Family ownership and the cost of under-diversification

Richard Heaney and Martin Holmen

Applied Financial Economics, 2008, vol. 18, issue 21, 1721-1737

Abstract: We argue that the cost to a family of holding a large block of shares in a company, or under-diversifying, is reflected in the diversification benefits that the family forfeits. These costs can be substantial. For example, given a constant relative risk aversion parameter of 2, the median cost to our sample of families controlling large Swedish firms is 13% of the market value of firm's shares. We find that this cost is reduced by pyramid structures but not by the use of dual class shares.

Date: 2008
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DOI: 10.1080/09603100701735912

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