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Improving the performance of equity portfolios

Published online by Cambridge University Press:  20 April 2012

R. S. Clarkson  and
J. Plymen
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Extract

This paper has the strictly practical objective of devising procedures for managing Equity portfolios to the best advantage.

First, Modern Portfolio Theory, (MPT) which has been developed over the last 35 years with just this objective, is critically examined; from a study of the history of MPT and of its philosophy, principles and practices, the authors conclude that this discipline makes no contribution whatever to improving the performance.

The Index Fund step-up is a sterile concept. Surely a professional investment manager, using modern techniques of data banks, investment analysis, etc. should improve on the Index performance. This objective is in conflict with the Perfect Market Principle. For the less erudite investors, who are, of course, in the majority, the Perfect Market Principle may well apply, at any rate, to the well researched leading shares. However, the Perfect Market Principle should not apply to the erudite, professional investor, well equipped and well advised, who should be able to find many opportunities for situations with undervalued and overvalued shares, both among the leading issues and particularly within the smaller companies that get less research attention.

Type
Research Article
Information
Journal of the Institute of Actuaries , Volume 115 , Issue 4 , December 1988 , pp. 631 - 691
Copyright
Copyright © Institute and Faculty of Actuaries 1988

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References

(1) Clarkson, R. S. (1981). A Market Equilibrium Model for the Management of Ordinary Share Portfolios. T.F.A. 37, 439 and J.I.A. 110, 17.Google Scholar
(2) Moore, P. G. (1972). Mathematical Models in Portfolio Selection. J.I.A. 98, 103.Google Scholar
(3) Pegler, J. B. H. (1948). The Actuarial Principles of Investment. J.I.A. 74, 179.Google Scholar
(4) Cootner, P. H. (1962). Stock Prices: Random vs Systematic Changes. Industrial Management Review, 111, 24.Google Scholar
(5) Jensen, M. (1968). The Performance of Mutual Funds in the Period 1945–64. The Journal of Finance, XXIII, 389.Google Scholar
(6) Clarkson, R. S. (1978). A Mathematical Model for the Gilt-edged Market. T.F.A. 36, 85 and J.I.A. 106, 85.Google Scholar
(7) Plymen, J. & Prevett, R. M. (1972). The Computer for Investment Research. T.F.A. 33, 143.Google Scholar
(8) Markovitz, H.M. (1952). Portfolio Selection. The Journal of Finance, VII, 77.Google Scholar
(9) Markovitz, H. M. (1959). Portfolio Selection: Efficient Diversification of Investment. John Wiley & Sons, New York.Google Scholar
(10) Sharpe, W. F. (1963). A Simplified Model for Portfolio Analysis, Management Science, IX, 277.CrossRefGoogle Scholar
(11) Rudd, A. & Clasing, H. K. (1982). Modern Portfolio Theory: The Principles of Investment Management. Dow Jones-Irwin.Google Scholar
(12) Corner, D. & Mayes, D. G. (1983). Modern Portfolio Theory and Financial Institutions.Google Scholar
(13) Keane, S. M. (1980). The Efficient Market Hypothesis and the Implications for Financial Reporting. Gee & Co. Limited.Google Scholar
(14) Mandelbrot, B. The Variation of Certain Speculative Prices. Journal of Business, XXXVI, 394.Google Scholar
(15) Steiger, W. (1963). A Test of Nonrandomness in Stock Price Changes.Google Scholar
(16) Weaver, D. & Hall, M. G. (1967) The Evaluation of Ordinary Shares using a Computer. J.I.A. 98, 103.Google Scholar
(17) Plymen, J. (1987). The Actuarial Background to Investment Policy. Faculty of Actuaries, February 1987.Google Scholar