Erm Bandwidths for Emu and after: Evidence from Foreign Exchange Options

37 Pages Posted: 31 Mar 2004

See all articles by José Manuel Campa

José Manuel Campa

University of Navarra - Madrid Campus - IESE Business School; National Bureau of Economic Research (NBER)

P. H. Kevin Chang

Credit Suisse AG - London Headquarters

Robert L. Reider

J.P. Morgan Chase & Co.

Abstract

Are the wide bands adopted in the summer of 1993 too large? The official answer is that wide bands offer a protection against speculative pressure, while exchange rates may be kept within narrower margins at the discretion of the authorities. Yet if exchange rate fixity and predictability are desirable, as implicitly assumed by the mere existence of the system, there must exist a trade-off between protection against speculative pressure and predictability. In that case, the bandwidth chosen should be as narrow as possible and yet unlikely to be challenged by the markets. This paper offers estimates of 'safe' bandwidths. For the long-term member currencies (French franc, peseta, Danish krone and escudo), the existing 15% bands are found to be unnecessarily wide: narrower 3.5% bands would capture at least 95% of expected exchange rate realizations over a three-month horizon. For the lira, Finnish markka and Swedish krone, wider bands of 5-6% would capture a similar amount of the exchange rate distribution. The pound's exchange rate expectations are the most dispersed, requiring 8.4% bands to capture 95% of exchange rate expectations.

Suggested Citation

Campa, José Manuel and Chang, P.H. Kevin and Reider, Robert L., Erm Bandwidths for Emu and after: Evidence from Foreign Exchange Options. Economic Policy, Vol. 12, pp. 53-89, April 1997. Available at SSRN: https://ssrn.com/abstract=513504

José Manuel Campa (Contact Author)

University of Navarra - Madrid Campus - IESE Business School ( email )

Camino del Cerro del Aguila 3
Madrid, 28023
Spain
+34 91 357 0809 (Phone)
+34 91 357 2913 (Fax)

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

P.H. Kevin Chang

Credit Suisse AG - London Headquarters ( email )

One Cabot Square
London E14 4QJ
United Kingdom
+44 171 888 8535 (Phone)
+44 171 888 4775 (Fax)

Robert L. Reider

J.P. Morgan Chase & Co.

522 Fifth Ave., 9th Floor
New York, NY 10036
United States

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