On the streets of downtown Buenos Aires, where years of tough currency controls fermented a thriving black market for dollars ...

Japanese assets saw more than $50 billion worth of investment from abroad in April, according to a report from Nikkei Asia.

The firm, which has a market value of about $70 million, said it had faced margin calls on currency derivatives, and had suffered a “rapid and significant” hit to liquidity.

Some of the world's major currencies will try to compete with the dollar on the global stage and could even attract some ...