Rapid movements in currency markets have been a common occurrence in recent years, often to the detriment of traders and investors. The ability to manage these fluctuations is essential for safe and successful investment in these markets. Currency Strategy develops new techniques and explains classic tools available for predicting, managing, and optimizing fluctuations in the currency markets. Author Callum Henderson shows readers how traditional macroeconomic theory has repeatedly failed in the face of practical experience in these markets and develops a new approach based on experience. He draws on the technical expertise of his bank to develop mathematical models to assist in the prediction of crises and gives practical advice on how to use these and other tools successfully.