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Diversification Versus Concentration ......... and the Winner Is?

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Diversification has its obvious benefits but its pursuit can involve a trade-off between risk-controls and returns. We investigate this trade-off by examining the relative performance of diversified versus concentrated portfolios both formed on the basis of the same stock preferences. Using US equity mutual funds as our data base, we establish that the concentrated portfolios achieve the better performance. This highlights the potential for investors to diversify across concentrated funds rather than have the funds do the diversification themselves. It also highlights that the stocks selection skills of the managers may be lost by their portfolio construction endeavours.

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  • Danny Yeung & Paolo Pellizzari & Ron Bird & Sazali Abidin, 2012. "Diversification Versus Concentration ......... and the Winner Is?," Working Paper Series 18, The Paul Woolley Centre for Capital Market Dysfunctionality, University of Technology, Sydney.
    • Handle: RePEc:uts:pwcwps:18
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    1. K. J. Martijn Cremers & Antti Petajisto, 2009. "How Active Is Your Fund Manager? A New Measure That Predicts Performance," The Review of Financial Studies, Society for Financial Studies, vol. 22(9), pages 3329-3365, September.
    2. Martijn Cremers & Antti Petajisto, 2006. "How Active is Your Fund Manager? A New Measure That Predicts Performance," Yale School of Management Working Papers amz2370, Yale School of Management, revised 01 May 2009.
    3. Ron Bird & Paolo Pellizzari & Danny Yeung & Paul Woolley, 2012. "The Strategic Implementation of an Investment Process in a Funds Management Firm," Working Paper Series 17, The Paul Woolley Centre for Capital Market Dysfunctionality, University of Technology, Sydney.
    4. Amit Goyal & Sunil Wahal, 2008. "The Selection and Termination of Investment Management Firms by Plan Sponsors," Journal of Finance, American Finance Association, vol. 63(4), pages 1805-1847, August.
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    Cited by:

    1. Jiawen Xu & Yixuan Li & Kai Liu & Tao Chen, 2023. "Portfolio selection: from under-diversification to concentration," Empirical Economics, Springer, vol. 64(4), pages 1539-1557, April.
    2. Pi‐Hsia Hung & Donald Lien & Yun‐Ju Chien, 2020. "Portfolio concentration and fund manager performance," Review of Financial Economics, John Wiley & Sons, vol. 38(3), pages 423-451, July.

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