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International Liquidity and Exchange Rate Dynamics

  • Xavier Gabaix
  • Matteo Maggiori

We provide a theory of the determination of exchange rates based on capital flows in imperfect financial markets. Capital flows drive exchange rates by altering the balance sheets of financiers that bear the risks resulting from international imbalances in the demand for financial assets. Such alterations to their balance sheets cause financiers to change their required compensation for holding currency risk, thus impacting both the level and volatility of exchange rates. Our theory of exchange rate determination in imperfect financial markets not only helps to rationalize the empirical disconnect between exchange rates and traditional macroeconomic fundamentals, but also has real consequences for output and risk sharing. Exchange rates are sensitive to imbalances in financial markets and seldom perform the shock absorption role that is central to traditional theoretical macroeconomic analysis. We derive conditions under which heterodox government financial policies, such as currency interventions and taxation of capital flows, can be welfare improving. Our framework is flexible; it accommodates a number of important modeling features within an imperfect financial market model, such as non-tradables, production, money, sticky prices or wages, various forms of international pricing-to-market, and unemployment.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 19854.

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Date of creation: Jan 2014
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Handle: RePEc:nbr:nberwo:19854
Note: AP CF EFG IFM ME
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  1. Martin Lettau & Matteo Maggiori & Michael Weber, 2013. "Conditional Risk Premia in Currency Markets and Other Asset Classes," NBER Working Papers 18844, National Bureau of Economic Research, Inc.
  2. Blanchard, Olivier Jean & Kahn, Charles M, 1980. "The Solution of Linear Difference Models under Rational Expectations," Econometrica, Econometric Society, vol. 48(5), pages 1305-11, July.
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