Christine P. Ries is professor of economics and chair of the School of Economics, Ivan Allen College, Georgia Institute of Technology. Richard J. Sweeney is Sullivan/Dean Professor of International Finance at Georgetown School of Business, Georgetown University. Richard J. Sweeney is Sullivan/Dean Professor of International Finance at Georgetown University, Edward Tower is professor of economics at Duke University, and Thomas D. Willett is Horton Professor of Economics at Claremont McKenna College and the Claremont Graduate School.

• Previous studies of technical analysis; statistical tests of risk-adjusted profits from trading rules - the X-test; selected trading rules; equally-weighted portfolios of currencies, with rules tailored for each currency; variably-weighted portfolios of currencies, with rules tailored for each currency; speculating on indexes of currencies; speculating with a portfolio upgrade approach; comparing the performances of technical trading strategies; the stability of speculative profits; implications for the theory and practice of financial economics; implications for policymakers.

Christine P. Ries is professor of economics and chair of the School of Economics, Ivan Allen College, Georgia Institute of Technology. Richard J. Sweeney is Sullivan/Dean Professor of International Finance at Georgetown School of Business, Georgetown University. Richard J. Sweeney is Sullivan/Dean Professor of International Finance at Georgetown University, Edward Tower is professor of economics at Duke University, and Thomas D. Willett is Horton Professor of Economics at Claremont McKenna College and the Claremont Graduate School.

• Previous studies of technical analysis; statistical tests of risk-adjusted profits from trading rules - the X-test; selected trading rules; equally-weighted portfolios of currencies, with rules tailored for each currency; variably-weighted portfolios of currencies, with rules tailored for each currency; speculating on indexes of currencies; speculating with a portfolio upgrade approach; comparing the performances of technical trading strategies; the stability of speculative profits; implications for the theory and practice of financial economics; implications for policymakers.