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Why Global and Local Solutions of Open-Economy Models with Incomplete Markets Differ and Why it Matters

Author

Listed:
  • Oliver de Groot

    (University of Liverpool and CEPR)

  • C. Bora Durdu

    (Federal Reserve Board)

  • Enrique G. Mendoza

    (University of Pennsylvania and NBER)

Abstract

We compare global (fixed-point iteration) and local (first-order, higher-order, risky-steady-state, and quasi-linear) solutions of open-economy incomplete-markets models. Cyclical moments of a workhorse endowment model are broadly in line with the data and similar across solutions calibrated to the same data targets, but impulse responses and spectral densities differ. Alternative local solutions yield nearly identical results. Calibrating them requires nontrivial interest-rate elasticities that make net foreign assets (NFA) “sticky,” causing them to differ sharply from global solutions in experiments altering precautionary savings (e.g., increasing income volatility, adding capital controls). Analytic and numerical results show that our findings are due to the near-unit-root nature of NFA under incomplete markets and imprecise solutions of their autocorrelation. These findings extend to a Sudden Stops model with an occasionally binding collateral constraint. In addition, quasi-linear methods yield smaller financial premia and macroeconomic responses when the constraint binds.

Suggested Citation

  • Oliver de Groot & C. Bora Durdu & Enrique G. Mendoza, 2024. "Why Global and Local Solutions of Open-Economy Models with Incomplete Markets Differ and Why it Matters," PIER Working Paper Archive 24-037, Penn Institute for Economic Research, Department of Economics, University of Pennsylvania.
  • Handle: RePEc:pen:papers:24-037
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    References listed on IDEAS

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    More about this item

    Keywords

    Solution methods; Sudden stops; Precautionary savings; Occasionally binding constraints;
    All these keywords.

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics

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