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Does a Currency Union Need a Capital Market Union? Risk Sharing via Banks and Markets

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  • Joseba Martinez
  • Thomas Philippon
  • Markus Sihvonen

Abstract

We compare risk sharing in response to demand and supply shocks in four types of currency unions: segmented markets; a banking union; a capital market union; and complete financial markets. We show that a banking union is efficient at sharing all domestic demand shocks (deleveraging, fiscal consolidation), while a capital market union is necessary to share supply shocks (productivity and quality shocks). Using a calibrated model we provide evidence of substantial welfare gains from a banking union and, in the presence of supply shocks, from a capital market union.

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  • Joseba Martinez & Thomas Philippon & Markus Sihvonen, 2019. "Does a Currency Union Need a Capital Market Union? Risk Sharing via Banks and Markets," NBER Working Papers 26026, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:26026
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    3. Hoffmann, Mathias & Okubo, Toshihiro, 2022. "‘By a silken thread’: Regional banking integration and credit reallocation during Japan's lost decade," Journal of International Economics, Elsevier, vol. 137(C).

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    JEL classification:

    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit
    • F02 - International Economics - - General - - - International Economic Order and Integration
    • F3 - International Economics - - International Finance
    • F40 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - General

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