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Do Inflation-Linked Bonds Still Diversify ?

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  • Brière, Marie
  • Signori, Ombretta
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    Abstract

    The diversifying power of inflation-linked (IL) bonds relative to traditional asset classes has changed significantly. In this paper, we study the dynamics of conditional volatilities and correlations for three asset classes, IL bonds, nominal bonds, and equities, in the USA and Europe. Using a DCC-MVGARCH for the period 1997-2007, we highlight the change that took place in 2003. Although IL bonds once had definite diversification power, they are now highly correlated with nominal bonds and have reached similar volatility levels. As a result, the two asset classes are practically substitutable. This seems to be due to more stable inflation expectations and to a more liquid IL bond market. Although diversification was a valuable reason for introducing IL bonds in a global portfolio before 2003, this is no longer the case. Dynamic portfolio optimisation using our estimates of conditional correlations and volatilities clearly demonstrates that the optimal weight of IL bonds in a portfolio decreased sharply in 2003 in favour of nominal bonds and equities.

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    Bibliographic Info

    Paper provided by Paris Dauphine University in its series Economics Papers from University Paris Dauphine with number 123456789/7741.

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    Date of creation: Mar 2009
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    Publication status: Published in European Financial Management, 2009, Vol. 15, no. 2. pp. 279-297.Length: 18 pages
    Handle: RePEc:dau:papers:123456789/7741

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    Related research

    Keywords: conditional correlation; conditional volatility; portfolio choice; optimal allocation; Inflation-linked bonds;

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    1. Schwert, G.W., 1988. "Business Cycles, Financial Crises And Stock Volatility," Papers 88-06, Rochester, Business - General.
    2. Dick van Dijk & Haris Munandar & Christian Hafner, 2011. "The euro introduction and noneuro currencies," Applied Financial Economics, Taylor & Francis Journals, vol. 21(1-2), pages 95-116.
    3. John Y. Campbell & Robert J. Shiller, 1996. "A Scorecard for Indexed Government Debt," Cowles Foundation Discussion Papers 1125, Cowles Foundation for Research in Economics, Yale University.
    4. Hunter, Delroy M. & Simon, David P., 2005. "Are TIPS the "real" deal?: A conditional assessment of their role in a nominal portfolio," Journal of Banking & Finance, Elsevier, vol. 29(2), pages 347-368, February.
    5. Robert F. Engle & Kevin Sheppard, 2001. "Theoretical and Empirical properties of Dynamic Conditional Correlation Multivariate GARCH," NBER Working Papers 8554, National Bureau of Economic Research, Inc.
    6. Bekaert, Geert & Wu, Guojun, 2000. "Asymmetric Volatility and Risk in Equity Markets," Review of Financial Studies, Society for Financial Studies, vol. 13(1), pages 1-42.
    7. Peter Hoerdahl & Oreste Tristani, 2007. "Inflation risk premia in the term structure of interest rates," BIS Working Papers 228, Bank for International Settlements.
    8. J. Benson Durham, 2006. "An estimate of the inflation risk premium using a three-factor affine term structure model," Finance and Economics Discussion Series 2006-42, Board of Governors of the Federal Reserve System (U.S.).
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    Cited by:
    1. Marie Brière & Ombretta Signori, 2011. "Inflation hedging portfolios in different regimes," BIS Papers chapters, in: Bank for International Settlements (ed.), Portfolio and risk management for central banks and sovereign wealth funds, volume 58, pages 139-163 Bank for International Settlements.
    2. Brière, Marie & Signori, Ombretta, 2013. "Hedging inflation risk in a developing economy: The case of Brazil," Research in International Business and Finance, Elsevier, vol. 27(1), pages 209-222.
    3. Signori, Ombretta & Brière, Marie, 2012. "Inflation-Hedging Portfolios : Economic Regimes Matter," Economics Papers from University Paris Dauphine 123456789/9296, Paris Dauphine University.
    4. Marie Briere & Ariane Szafarz, 2011. "Investment in Microfinance Equity: Risk, Return, and Diversification Benefits," Working Papers CEB 11-050, ULB -- Universite Libre de Bruxelles.
    5. Brière, Marie & Signori, Ombretta, 2011. "Inflation-hedging Portfolios in Different Regimes," Economics Papers from University Paris Dauphine 123456789/7744, Paris Dauphine University.
    6. Geert Bekaert & Xiaozheng Wang, 2010. "Inflation risk and the inflation risk premium," Economic Policy, CEPR & CES & MSH, vol. 25, pages 755-806, October.
    7. Cartea, Álvaro & Saúl, Jonatan & Toro, Juan, 2012. "Optimal portfolio choice in real terms: Measuring the benefits of TIPS," Journal of Empirical Finance, Elsevier, vol. 19(5), pages 721-740.

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