posted on 03 January 2017
Written by Steven Hansen
The ISM Manufacturing survey improved and remained marginally in expansion. The key internals remain mixed. The Markit PMI manufacturing Index, also released today, is in positive territory and improved.
The ISM Manufacturing survey index (PMI) marginally improved from 53.2 to 54.7 (50 separates manufacturing contraction and expansion). This was slightly above expectations from Bloomberg / Econoday which were 53.0 to 54.7 (consensus 53.8).
Earlier today, the Markit PMI Manufacturing Index was released:
Relatively deep penetration of this index below 50 has normally resulted in a recession.
The noisy Backlog of Orders was unchanged and remans in contraction. Backlog growth should be an indicator of improving conditions; a number below 50 indicates contraction. Backlog accuracy does not have a high correlation against actual data.
Excepts from the ISM release:
It is interesting to note that ISM Manufacturing represents less than 10% of USA employment, and approximately 20% of the business economy. Historically, it could be argued that the production portion of ISM Manufacturing leads the Fed's Industrial Production index - however the correlation is not strong when looking at trends.
However, holding this and other survey's Econintersect follows accountable for their predictions, the following graph compares the hard data from Industrial Products manufacturing subindex (blue bar) and US Census manufacturing shipments (red bar) to the ISM Manufacturing Survey (purple bar).
Comparing Surveys to Hard Data
Caveats on the use of ISM Manufacturing Index:
This is a survey, a quantification of opinion - not facts and data. However, as pointed out above, certain elements of this survey have good to excellent correlation to the economy. Surveys lead hard data by weeks to months, and can provide early insight into changing conditions.
Many use ISM manufacturing for guidance in estimating manufacturing employment growth. Econintersect has run correlation coefficients for the ISM manufacturing employment and the BLS manufacturing employment data series above going back to 1988, using quarterly data. The coincident correlations are actually negative, but poor (r = -0.2 to -0.4 for various time periods examined). See here for definitions.
Before 2000 the ISM employment data had a weak positive correlation to the BLS data 4 to 7 quarters later (r values above 0.6). Since 2000 the correlations for ISM manufacturing employment as a leading indicator for the BLS manufacturing employment have been between 0 and 0.3 for r (correlation coefficient). These values define correlations as none to poor.
In other words, ISM employment index is not useful in understanding manufacturing jobs growth.
The ISM employment index appears useful in predicting turning points which can lead the BLS data up to one year.
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