Waning interest in overseas stocks could bolster U.S. currency's gains.

Waning interest in overseas stocks could bolster U.S. currency's gains.

As capital flees Russia and the ruble drops, the RMB continues to climb the ranks of most-traded currencies.

As capital flees Russia and the ruble drops, the RMB continues to climb the ranks of most-traded currencies.

ECBs move suggests volatility will remain low, a situation that supports carry trades.

ECBs move suggests volatility will remain low, a situation that supports carry trades.

Foreign exchange traders 'smell blood' as some emerging-market governments burn through foreign reserves in an effort to prop up their currencies.

Foreign exchange traders 'smell blood' as some emerging-market governments burn through foreign reserves in an effort to prop up their currencies.