"Chicago Purchasing Managers Index (PMI) is an economic indicator released by the Chicago Purchasing Managers Association, which is used to measure the activity level and economic prosperity of the manufacturing industry in the Chicago area. The index is the focus of the market and investors It is one of the important economic indicators and has a high market influence.

The Chicago Purchasing Managers Index is calculated based on purchasing managers' evaluations and expectations of economic activity, and its samples cover most of the manufacturing companies in the Chicago area. The index covers five aspects of economic activity, namely new orders, production, manufacturers' inventories, employment and delivery deadlines, among which new orders and production have the greatest impact on the index.

The Chicago Purchasing Managers Index ranges from 0 to 100, with 50 being the cut-off point for economic activity. A value greater than 50 indicates expansion of economic activity, and a value less than 50 indicates contraction of economic activity. The index has a certain degree of predictability, because purchasing managers are one of the important decision-makers of enterprises, and their decisions often reflect the expectations and judgments of enterprises on future economic trends.

The Chicago Purchasing Managers Index has high attention and predictive value in the market. Its release has a great impact on the market and investors. If the Chicago PMI value exceeds market expectations, it may lead to a rise in trading sentiment in the market and a rise in stock and commodity prices; conversely, if the Chicago PMI value is lower than market expectations, it may trigger The market is worried, causing stock and commodity prices to fall.

It should be noted that the Chicago Purchasing Managers Index can only reflect the activity level of the manufacturing industry in the Chicago area, but not the activity level of the entire US manufacturing industry. In addition, due to the particularity of manufacturing enterprises in the Chicago area, the results of the index are also affected by factors such as the market and seasons. Therefore, when using the Chicago Purchasing Managers Index, various factors need to be considered comprehensively in order to better To accurately assess the level of economic activity and predict future economic trends. "