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A New Open Economy Macroeconomic Model with Endogenous Portfolio Diversifi cation and Firms Entry

Author

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  • Marta Arespa

    (CREB, Universitat de Barcelona.)

Abstract

This paper provides a new benchmark for the analysis of the international diversi cation puzzle in a tractable new open economy macroeconomic model. Building on Cole and Obstfeld (1991) and Heathcote and Perri (2009), this model speci es an equilibrium model of perfect risk sharing in incomplete markets, with endogenous portfolios and number of varieties. Equity home bias may not be a puzzle but a perfectly optimal allocation for hedging risk. In contrast to previous work, the model shows that: (i) optimal international portfolio diversi cation is driven by home bias in capital goods, independently of home bias in consumption, and by the share of income accruing to labour. The model explains reasonably well the recent patterns of portfolio allocations in developed economies; and (ii) optimal portfolio shares are independent of market dynamics.

Suggested Citation

  • Marta Arespa, 2011. "A New Open Economy Macroeconomic Model with Endogenous Portfolio Diversifi cation and Firms Entry," Working Papers XREAP2011-15, Xarxa de Referència en Economia Aplicada (XREAP), revised Oct 2011.
    • Handle: RePEc:xrp:wpaper:xreap2011-15
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    References listed on IDEAS

    as
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    More about this item

    Keywords

    Subsidies; Home bias; equity puzzle; New open economy macroeconomics; NOEM; extensive margin.;
    All these keywords.

    JEL classification:

    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions

    NEP fields

    This paper has been announced in the following NEP Reports:

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