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Private Beliefs and Information Externalities in the Foreign Exchange Market

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  • Richard K. Lyons

Abstract

An information externality exists in the foreign exchange market due to the fact that traders play two partially conflicting roles: (i) each is a speculator and (ii) each is an information clearinghouse in that each intermediates own-customer orders which convey information. Profit maximization induces traders to underweight fundamental information in making their trades, reducing the degree to which prices reveal information at any given time. In the model, agents update diverse beliefs over time, with transactions-mediated tatonnement. The explicit role for transactions provides a framework for interpreting the relationship between the diversity of beliefs, trading volume, and price adjustment.

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Bibliographic Info

Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 3889.

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Date of creation: Oct 1991
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Handle: RePEc:nbr:nberwo:3889

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  1. Lawrence R. Glosten & Paul R. Milgrom, 1983. "Bid, Ask and Transaction Prices in a Specialist Market with Heterogeneously Informed Traders," Discussion Papers 570, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  2. Tirole, Jean, 1982. "On the Possibility of Speculation under Rational Expectations," Econometrica, Econometric Society, vol. 50(5), pages 1163-81, September.
  3. Stein, Jeremy C., 1987. "Informational Externalities and Welfare-Reducing Speculation," Scholarly Articles 3660740, Harvard University Department of Economics.
  4. Kyle, Albert S, 1985. "Continuous Auctions and Insider Trading," Econometrica, Econometric Society, vol. 53(6), pages 1315-35, November.
  5. Jeffrey Frankel and Kenneth Froot., 1991. "Exchange Rate Forecasting Techniques, Survey Data, and Implications for the Foreign Exchange Market," Economics Working Papers 91-158, University of California at Berkeley.
  6. Karpoff, Jonathan M, 1986. " A Theory of Trading Volume," Journal of Finance, American Finance Association, vol. 41(5), pages 1069-87, December.
  7. Jaffe, Jeffrey F & Winkler, Robert L, 1976. "Optimal Speculation against an Efficient Market," Journal of Finance, American Finance Association, vol. 31(1), pages 49-61, March.
  8. Grammatikos, Theoharry & Saunders, Anthony, 1986. "Futures Price Variability: A Test of Maturity and Volume Effects," The Journal of Business, University of Chicago Press, vol. 59(2), pages 319-30, April.
  9. Milgrom, Paul & Stokey, Nancy, 1982. "Information, trade and common knowledge," Journal of Economic Theory, Elsevier, vol. 26(1), pages 17-27, February.
  10. Hal R. Varian, 1986. "Differences of opinion in financial markets," Proceedings, Federal Reserve Bank of St. Louis, pages 3-40.
  11. Diamond, Douglas W. & Verrecchia, Robert E., 1981. "Information aggregation in a noisy rational expectations economy," Journal of Financial Economics, Elsevier, vol. 9(3), pages 221-235, September.
  12. Hellwig, Martin F., 1980. "On the aggregation of information in competitive markets," Journal of Economic Theory, Elsevier, vol. 22(3), pages 477-498, June.
  13. Goodhart, Charles, 1988. "The Foreign Exchange Market: A Random Walk with a Dragging Anchor," Economica, London School of Economics and Political Science, vol. 55(220), pages 437-60, November.
  14. Hirshleifer, Jack, 1971. "The Private and Social Value of Information and the Reward to Inventive Activity," American Economic Review, American Economic Association, vol. 61(4), pages 561-74, September.
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Cited by:
  1. BAUWENS, Luc & BEN OMRANE, Walid & GIOT, Pierre, 2003. "News announcements, market activity and volatility in the Euro/Dollar foreign exchange market," CORE Discussion Papers 2003029, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  2. Benassy-Quere, Agnes & Larribeau, Sophie & MacDonald, Ronald, 2003. "Models of exchange rate expectations: how much heterogeneity?," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 13(2), pages 113-136, April.
  3. Carlos A. Ulibarri & Peter C. Anselmo & Karen Hovespian & Jacob Tolk & Ionut Florescu, 2009. "'Noise-trader risk' and Bayesian market making in FX derivatives: rolling loaded dice?," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 14(3), pages 268-279.
  4. Dick van Dijk & Haris Munandar & Christian Hafner, 2011. "The euro introduction and noneuro currencies," Applied Financial Economics, Taylor & Francis Journals, vol. 21(1-2), pages 95-116.
  5. Osler, C. L., 1995. "Exchange rate dynamics and speculator horizons," Journal of International Money and Finance, Elsevier, vol. 14(5), pages 695-719, October.
  6. Hernando Vargas & Rocío Betnacourt, . "Pension Fund Managers Behavior In The Foreign Exchange Market," Borradores de Economia 391, Banco de la Republica de Colombia.
  7. Bronka Rzepkowski, 2001. "Heterogeneous Expectations, Currency Options and the Euro / Dollar Exchange Rate," Working Papers 2001-03, CEPII research center.
  8. Poskitt, Russell, 2005. "Bid/ask spreads in the foreign exchange market: An alternative interpretation," Pacific-Basin Finance Journal, Elsevier, vol. 13(5), pages 562-583, November.
  9. Hernando Vargas H. & Rocío Betancourt, 2006. "Pension Fund Managers Behavior In The Foreign Exchange Market," BORRADORES DE ECONOMIA 003317, BANCO DE LA REPÚBLICA.

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