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 dollar by calculating the comprehensive rate of change of the dollar and a selected basket of currencies.

Index weight (%): EUR 57.6, JPY 13.6, GBP1/0.9, CAD 9. 1, SEK 4.2 and CHF 3.6.

Therefore, the rise of the US dollar index means the rise of the US dollar exchange rate, that is, the general decline of non-US currencies. The dollar index is equivalent to the dollar exchange rate, so it is the biggest index that affects the foreign exchange market.