The Uncovered Interest Rate Parity Anomaly And Foreign Exchange Market Turnover

The uncovered interest rate parity (UIP) anomaly is that high interest rate currencies appreciate, rather than depreciate, against low interest rate currencies. We show that the UIP anomalies apparent in six major currency pairs have diminished over our 1995-2010 sample period. We further show that the observed decline in deviations from UIP is associated with the substantially higher transaction volume now present in the foreign exchange markets. We interpret our findings as consistent with the proposition that the UIP anomaly dissipates as the foreign exchange markets become more efficient