Dollar index (dollar index? USDX is an indicator that comprehensively reflects the exchange rate of the US dollar in the international foreign exchange market, and is used to measure the degree of exchange rate change of the US dollar against a basket of currencies. It measures the strength of the US dollar by calculating the comprehensive rate of change between the US dollar and a selected basket of currencies, thus indirectly reflecting the changes in US export competitiveness and import costs.

The dollar index is not from Chicago Board of Trade (CBOT) or Chicago Mercantile Exchange (CME), but from new york Cotton Exchange (NYCE). New york Cotton Exchange was founded in 1870, which was originally composed of a group of cotton merchants and middlemen. It is the oldest commodity exchange in new york and the most important cotton futures and options exchange in the world. 1985, new york cotton exchange established the finance department, and officially entered the global financial commodity market. The first is the US dollar index futures.

From 65438 to 0998, new york Cotton Exchange and Coffee Sugar Cocoa Exchange merged to form NYBOT. In September, 2006, New York Futures Exchange merged into Intercontinental Exchange (ICE) and became its subordinate department.

Dollar index futures are traded on the American Intercontinental Exchange. The Exchange is responsible for releasing real-time data of the US dollar index and the futures price of the US dollar index. 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.

1944, Britain and the United States reached an understanding after a heated debate. In May of that year, the United States invited representatives of 44 governments involved in the preparation of the United Nations to hold a meeting in Bretton Woods, signed the Bretton Woods Agreement, and established the second international monetary system after the collapse of the gold standard-the Bretton Woods system. The core of this system is the "double peg" system, that is, the dollar is linked to gold, and the currencies of various countries are linked to the dollar. The dollar is at the center and plays the role of the world currency, while the United States undertakes the obligation to exchange official prices for gold.