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Does a currency union need a capital market union?

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  • Martinez, Joseba
  • Philippon, Thomas
  • Sihvonen, Markus

Abstract

We compare risk sharing in response to demand and supply shocks in four types of currency unions: segmented markets; a money market union; a capital market union; and complete financial markets. We show that a money market union is efficient at sharing domestic demand shocks (deleveraging, fiscal consolidation), while a capital market union is necessary to share supply shocks (productivity and quality shocks). In a numerical exercise, we find that the welfare gain of moving from segmented markets to a money market union is of roughly similar magnitude to that of moving from a money market to a capital market union.

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  • Martinez, Joseba & Philippon, Thomas & Sihvonen, Markus, 2022. "Does a currency union need a capital market union?," Journal of International Economics, Elsevier, vol. 139(C).
    • Handle: RePEc:eee:inecon:v:139:y:2022:i:c:s0022199622001076
    DOI: 10.1016/j.jinteco.2022.103675
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    More about this item

    Keywords

    Risk sharing; Currency union; Banking union; Capital market union; Incomplete markets;
    All these keywords.

    JEL classification:

    • F45 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Macroeconomic Issues of Monetary Unions
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • F36 - International Economics - - International Finance - - - Financial Aspects of Economic Integration

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