Definition of Purchasing Managers Index Composite (PMI)

The composite Purchasing Managers' Index (PMI) is an indicator of economic health for manufacturing and service sectors. The purpose of the PMI is to provide information about current business conditions to company decision makers, analysts and purchasing managers. Each country PMI survey for the manufacturing or service sector is based on questionnaire responses from panels of senior purchasing executives (or similar) at over 400 companies. The composite PMI is a number from 0 to 100. A PMI above 50 represents an expansion when compared with the previous month. A PMI reading under 50 represents a contraction, and a reading at 50 indicates no change.

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