The race for cheaper currencies may have only just begun as nations from Japan to Brazil seek a competitive edge in international trade.
Japan last month intervened for the first time in six years to restrain the yen, while China is resisting calls to let the yuan rise faster. At the same time, a potential revival of US and UK asset-purchase plans may spark declines in their currencies. UBS AG says the “mega-trend” of interventions will roil the $4 trillion-a-day foreign-exchange market for the next decade.