The flash Composite Purchasing Managers' Index (PMI) provides an early estimate of current private sector output by combining information obtained from surveys of around 1,000 manufacturing and service sector companies. The flash data are released around ten days ahead of the final report and are typically based upon around 85 percent of the full survey sample. Results are synthesised into a single index which can range between zero and 100. A reading above (below) 50 signals rising (falling) output versus the previous month and the closer to 100 (zero) the faster is output growing (contracting). The report also contains flash estimates of the manufacturing and services PMIs. The data are produced by Markit.
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 purchasing managers' manufacturing indexes, 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.