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US Monetary Policy, Exchange Rates, and Delayed Portfolio Adjustments

Author

Listed:
  • Sangyup Choi

    (Yonsei University)

  • Jongho Park

    (Soongsil University)

  • Kwangyong Park

    (Sogang University)

Abstract

What accounts for cross-country heterogeneity in exchange rate responses to U.S. monetary policy shocks? Using high-frequency data around Federal Open Market Committe (FOMC) announcements, we document that countries with deeper financial markets—proxied by the size of foreign portfolio liabilities—experience larger currency depreciations following U.S. monetary tightening. This effect is particularly strong for forward guidance shocks relative to conventional interest rate surprises. To rationalize these findings, we extend the gradual portfolio adjustment model by introducing a forward-looking news shock and allowing portfolio adjustment costs to decline with financial market depth. The model replicates our empirical findings, offering a unified explanation for heterogeneous short-run exchange rate dynamics.

Suggested Citation

  • Sangyup Choi & Jongho Park & Kwangyong Park, 2025. "US Monetary Policy, Exchange Rates, and Delayed Portfolio Adjustments," Working papers 2025rwp-240, Yonsei University, Yonsei Economics Research Institute.
    • Handle: RePEc:yon:wpaper:2025rwp-240
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    More about this item

    Keywords

    Exchange rates; Monetary policy spillovers; Portfolio adjustment frictions; Forward guidance; Daily data;
    All these keywords.

    JEL classification:

    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G17 - Financial Economics - - General Financial Markets - - - Financial Forecasting and Simulation

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