The dependence of foreign exchange rates on order flow is investigated for four major exchange rate pairs, EUR/USD, EUR/GBP, GBP/USD and USD/JPY, across sampling frequencies ranging from 5 min to 1 week. Strong explanatory power is discovered for all sampling frequencies. We also uncover...

In comparison to macroeconomic models of nominal exchange rates, the market microstructure approach performs better in explaining exchange rate changes over short time horizons. The microstructure approach implies that information in order flow drives the dynamic processes of price evolution....