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Stochastic Process Switching: Some Simple Solutions

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  • Kenneth A. Froot
  • Maurice Obstfeld

Abstract

When changes in the economic policy regime occur stochastically, asset prices will reflect the possibility of such shifts. In this paper we apply techniques of regulated Brownian motion to obtain closed-form analytic price solutions when policy reaction functions are subject to prospective changes. We focus on the case in which the authorities promise to peg a currency's exchange rate once it reaches a predetermined future level. We also show how an open-ended commitment to exchange-rate targeting may lead to multiple equilibria.

Suggested Citation

  • Kenneth A. Froot & Maurice Obstfeld, 1989. "Stochastic Process Switching: Some Simple Solutions," NBER Working Papers 2998, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:2998
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    1. Obstfeld, Maurice & Stockman, Alan C., 1985. "Exchange-rate dynamics," Handbook of International Economics, in: R. W. Jones & P. B. Kenen (ed.), Handbook of International Economics, edition 1, volume 2, chapter 18, pages 917-977, Elsevier.
    2. Paul R. Krugman, 1988. "Target Zones and Exchange Rate Dynamics," NBER Working Papers 2481, National Bureau of Economic Research, Inc.
    3. Klein, Michael W, 1990. "Playing with the Band: Dynamic Effects of Target Zones in an Open Economy," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 31(4), pages 757-772, November.
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