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The Cost of Owning Employer Stocks: Lessons From Taiwan

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  • Yi-Tsung Lee
  • Yu-Jane Liu
  • Ning Zhu

Abstract

Using data on all employees at listed companies in Taiwan, we find that the bias toward employer stocks is generic to individual investor decision-making, but not limited to retirement plans. 71 percent of sample employees invest in employer stocks and the employer stocks make up on average 47 percent of employee equity portfolios. The under-diversification resulting from the bias toward employer stocks is highly costly. Holding current portfolio risk constant, employees forego 4.89 percent per annum in raw returns by investing in employer stocks, which represents 39.74 percent of their average 1998 salary income. Our findings have important implications for social security reform and retirement account management.

Suggested Citation

  • Yi-Tsung Lee & Yu-Jane Liu & Ning Zhu, 2007. "The Cost of Owning Employer Stocks: Lessons From Taiwan," Working Papers, Center for Retirement Research at Boston College wp2007-24, Center for Retirement Research, revised Dec 2007.
    • Handle: RePEc:crr:crrwps:wp2007-24
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    File URL: http://crr.bc.edu/working-papers/the-cost-of-owning-employer-stocks-lessons-from-taiwan/
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    Cited by:

    1. Trond M. Døskeland & Hans K. Hvide, 2011. "Do Individual Investors Have Asymmetric Information Based on Work Experience?," Journal of Finance, American Finance Association, vol. 66(3), pages 1011-1041, June.
    2. Ginglinger, Edith & Megginson, William & Waxin, Timothée, 2011. "Employee ownership, board representation, and corporate financial policies," Journal of Corporate Finance, Elsevier, vol. 17(4), pages 868-887, September.
    3. Hung, Mao-Wei & Liu, Yu-Jane & Tsai, Chia-Fen, 2012. "Managerial personal diversification and portfolio equity incentives," Journal of Corporate Finance, Elsevier, vol. 18(1), pages 38-64.

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