As the yen falls, sales denominated in foreign currencies convert into greater amounts of the Japanese currency.
A Shanghai finance company has even applied for permission to manage share issues denominated in foreign currencies.
That job resembles the one he is assuming, except it involved more securities denominated in foreign currencies.
The company said it would buy more securities denominated in foreign currencies, while monitoring exchange rates.
Exchange rate fluctuations can cause tax problems for people with mortgages denominated in foreign currencies.
As the dollar strengthens, sales denominated in other currencies yield fewer dollars.
And competitors say that Morgan earned more than $100 million last year trading convertible bonds denominated in foreign currencies.
It also reduces the number of marks produced by sales denominated in other currencies.
Over a third of the banks' assets are denominated in foreign currencies, and particularly in dollars.
The rally in China's small market for stocks denominated in hard currencies evaporated today.