Definition

The Institute for Supply Management surveys nearly 400 manufacturing firms on employment, production, new orders, supplier deliveries, and inventories. A composite diffusion index of national manufacturing conditions is constructed, where reading above (below) 50 percent indicate an expanding (contracting) factory sector. Export orders, import orders, backlog orders and prices paid for raw and unfinished materials are also measured, but these are not included in the overall index.

Why Do Investors Care?

Investors need to keep their fingers on the pulse of the economy because it dictates how various types of investments will perform. By tracking economic data such as the ISM manufacturing index, investors will know what the economic backdrop is for the various markets. The stock market likes to see healthy economic growth because that translates to higher corporate profits. The bond market prefers less rapid growth and is extremely sensitive to whether the economy is growing too quickly and causing potential inflationary pressures.

The ISM manufacturing data give a detailed look at the manufacturing sector, how busy it is and where things are headed. Since the manufacturing sector is a major source of cyclical variability in the economy, this report has a big influence on the markets. More than one of the ISM sub-indexes provides insight on commodity prices and clues regarding the potential for developing inflation. The Federal Reserve keeps a close watch on this report that helps it to determine the direction of interest rates when inflation signals are flashing in these data. As a result, the bond market is highly sensitive to this report.