Using two newly available ultrahigh-frequency datasets, we investigate empirically how frequently one can sample certain foreign exchange and U.S. Treasury security returns without contaminating estimates of their integrated volatility with market microstructure noise. We find that one can...

We present empirical evidence that the Thai exchange rate is driven in part by international investors' cross-border portfolio rebalancing decisions. Our results are based on two comprehensive, daily-frequency datasets of foreign exchange and equity market capital flows undertaken by nonresident...

Explaining exchange rates has long been an important but vexing issue in international economics and finance. In recent years, a number of studies have shown that investors' private information plays a central role in determining exchange rates. We demonstrate in this paper that the private...