The dollar index is not from Chicago Board of Trade (CBOT) or Chicago Mercantile Exchange (CME), but from new york Cotton Exchange (NYCE). The real-time data of the US dollar index (that is, the spot price corresponding to the ice US dollar index futures) is updated by Reuters every 15 seconds according to the real-time exchange rates of the constituent currencies of the US dollar index.
The average of the highest bid price and selling price of this currency calculated by Reuters. The calculation results are transmitted to the American Intercontinental Exchange and then distributed to data providers.
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The dollar is the legal tender of the United States of America. Because it is the largest currency in circulation in the world, many countries widely use the US dollar as a reserve currency to balance international payments. Therefore, the US dollar has become the basic currency in global foreign exchange, the main currency in international payment and foreign exchange transactions, and occupies a very important position in the international foreign exchange market.
The US dollar index is an index that comprehensively reflects the US dollar exchange rate in the international foreign exchange market and is used to measure the degree of exchange rate changes of the US dollar against a basket of currencies. It measures the strength of the US dollar by calculating the comprehensive change rate of the US dollar and a selected basket of currencies, in which each currency has a different weight in the US dollar index.
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Baidu Encyclopedia-Dollar Index