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Measuring the Significance of Diversification Gains

This article investigates whether investing in alternative investment media provides statistically significant increases in portfolio performance. Employing methodology introduced by Kandel and Stambaugh (1987) and Gibbons, Ross and Shanken (1989), we measure the statistical significance of diversification gains for portfolios containing real and financial domestic assets, as well as international debt and equity issues. The NCREIF real estate series is further examined using the Geltner (1993) adjustment to the risk measure. In the 1978B93 sample period, neither international assets nor unadjusted real estate ever result in statistically significant increases in portfolio performance. When the Geltner adjustment is made, the allocation to real estate is substantially reduced in the expanded portfolio and also fails to result in a statistically significant increase in portfolio performance. These results may help to resolve the paradox between current portfolio allocations to real estate in practice and those suggested in the literature.

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Article provided by American Real Estate Society in its journal Journal of Real Estate Research.

Volume (Year): 16 (1998)
Issue (Month): 1 ()
Pages: 73-86

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Handle: RePEc:jre:issued:v:16:n:1:1998:p:73-86
Contact details of provider: Postal: American Real Estate Society Clemson University School of Business & Behavioral Science Department of Finance 401 Sirrine Hall Clemson, SC 29634-1323
Web page: http://www.aresnet.org/
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Order Information: Postal: Diane Quarles American Real Estate Society Manager of Member Services Clemson University Box 341323 Clemson, SC 29634-1323
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  1. Carmelo Giaccotto & John Clapp, 1992. "Appraisal-Based Real Estate Returns under Alternative Market Regimes," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 20(1), pages 1-24.
  2. Ross, Stephen A & Zisler, Randall C, 1991. "Risk and Return in Real Estate," The Journal of Real Estate Finance and Economics, Springer, vol. 4(2), pages 175-90, June.
  3. James R. Follairi, 1989. "Inferring an Investment Return Series for Real Estate from Observations on Sales," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 17(2), pages 231-234.
  4. Pagan, Adrian R. & Schwert, G. William, 1990. "Testing for covariance stationarity in stock market data," Economics Letters, Elsevier, vol. 33(2), pages 165-170, June.
  5. W. B. Brueggeman & A. H. Chen & T. G. Thihodeau, 1984. "Real Estate Investment Funds: Performance and Portfolio Considerations," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 12(3), pages 333-354.
  6. David Geltner, 1993. "Temporal Aggregation in Real Estate Return Indices," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 21(2), pages 141-166.
  7. Kenneth R. French & James M. Poterba, 1991. "Investor Diversification and International Equity Markets," NBER Working Papers 3609, National Bureau of Economic Research, Inc.
  8. Gibbons, Michael R & Ross, Stephen A & Shanken, Jay, 1989. "A Test of the Efficiency of a Given Portfolio," Econometrica, Econometric Society, vol. 57(5), pages 1121-52, September.
  9. Geltner, David Michael, 1991. "Smoothing in Appraisal-Based Returns," The Journal of Real Estate Finance and Economics, Springer, vol. 4(3), pages 327-45, September.
  10. Kandel, Shmuel & Stambaugh, Robert F., 1987. "On correlations and inferences about mean-variance efficiency," Journal of Financial Economics, Elsevier, vol. 18(1), pages 61-90, March.
  11. James R. Webb & Jack H. Rubens, 1986. "Portfolio Considerations in the Valuation of Real Estate," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 14(3), pages 465-495.
  12. Daniel C. Quan & John M. Quigley, 1989. "Inferring an Investment Return Series for Real Estate from Observations on Sales," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 17(2), pages 218-230.
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