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Are information and portfolio diversification substitutes or complements?

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Listed:
  • Elisa Luciano
  • Antonella Tolomeo

Abstract

Whenever a new financial product is offered by the financial industry, a rational investor faces a trade off between diversification benefits and costs of \getting to know" the newly introduced asset. In this paper the investor who can diversify can also decide either to pay a fee and separate the information on different risks affecting his asset value, or to remain uninformed and receive a non-separating signal. The uninformed investor optimally filters his pooled signal. The paper provides conditions under which diversification benefits are exploited, with or without information acquisition. We discuss lack of diversification and under-diversification and provide conditions under which each of them applies.

Suggested Citation

  • Elisa Luciano & Antonella Tolomeo, 2016. "Are information and portfolio diversification substitutes or complements?," Carlo Alberto Notebooks 456, Collegio Carlo Alberto.
    • Handle: RePEc:cca:wpaper:456
    as

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    References listed on IDEAS

    as
    1. Detemple, Jerome & Murthy, Shashidhar, 1997. "Equilibrium Asset Prices and No-Arbitrage with Portfolio Constraints," The Review of Financial Studies, Society for Financial Studies, vol. 10(4), pages 1133-1174.
    2. Bernard Dumas & Alexander Kurshev & Raman Uppal, 2009. "Equilibrium Portfolio Strategies in the Presence of Sentiment Risk and Excess Volatility," Journal of Finance, American Finance Association, vol. 64(2), pages 579-629, April.
    3. Summers, Lawrence H, 1986. "Does the Stock Market Rationally Reflect Fundamental Values?," Journal of Finance, American Finance Association, vol. 41(3), pages 591-601, July.
    4. Paolo Guasoni, 2006. "Asymmetric Information in Fads Models," Finance and Stochastics, Springer, vol. 10(2), pages 159-177, April.
    5. Poterba, James M. & Summers, Lawrence H., 1988. "Mean reversion in stock prices : Evidence and Implications," Journal of Financial Economics, Elsevier, vol. 22(1), pages 27-59, October.
    6. Dothan, Michael U & Feldman, David, 1986. "Equilibrium Interest Rates and Multiperiod Bonds in a Partially Observable Economy," Journal of Finance, American Finance Association, vol. 41(2), pages 369-382, June.
    7. Paolo Guasoni, 2006. "Asymmetric Information in Fads Models," Finance and Stochastics, Springer, vol. 10(2), pages 159-177, April.
    8. Basak, Suleyman, 2005. "Asset pricing with heterogeneous beliefs," Journal of Banking & Finance, Elsevier, vol. 29(11), pages 2849-2881, November.
    9. Elisa Luciano & Antonella Tolomeo, 2016. "“Information effects in longevity-linked vs purely financial portfolios”," CeRP Working Papers 160, Center for Research on Pensions and Welfare Policies, Turin (Italy).
    10. Zapatero, Fernando, 1998. "Effects of financial innovations on market volatility when beliefs are heterogeneous," Journal of Economic Dynamics and Control, Elsevier, vol. 22(4), pages 597-626, April.
    11. Detemple, Jerome B, 1986. "Asset Pricing in a Production Economy with Incomplete Information," Journal of Finance, American Finance Association, vol. 41(2), pages 383-391, June.
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    More about this item

    Keywords

    Information costs; Optimal filtering; Portfolio diversification;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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