Efforts are being made to balance currency holdings in case any market-moving developments occur while United States trading is closed.

Argentina has bled out as much as $750 million a day in hard currency holdings.

For paper currency, it takes the form of a periodic tax, such as a stamp tax, on currency holdings.

In a move to shed restrictions on foreign currency holdings, Brazil's central bank will allow companies investing in the petroleum and electricity industries to open domestic accounts in dollars.

But no figures are available on how quickly Beijing may be shifting to other currency holdings, so its effect on the underlying demand for dollars is unclear.

But bankers said it was partly offset by a marked rise in foreign currency holdings.

A central reason given by Chinese officials for setting up the investment company is to improve returns on foreign currency holdings.

Its currency holdings total $1 trillion.

This matter of monitoring currency holdings and stability and the matter of whether the exception would not thus become the rule have lead to the motions for amendment.

China's currency holdings are already the world's largest, and they are growing rapidly because of China's huge trade surpluses.