The Chicago Purchasing Managers’ Index surged 13.5 points in May to a four-year high of 62.7, signaling an expansion in regional business activity. This marks the largest monthly increase since 2020 and was significantly higher than the projected 50.6.
Background on Chicago PMI
The Chicago PMI assesses the business conditions and the economic health of the manufacturing sector in the Chicago region. A value above 50.0 indicates expanding manufacturing activity, while a value below 50.0 indicates contracting manufacturing activity.
Weak readings have often preceded broader economic downturns. Looking at the index's historical performance, the current level of 62.7 is lower than where the index stood at the start of 6 of the 7 recessions since its inception.
A Closer Look Since 2000
Examining data since 2000, the index has undergone fluctuations, often aligning with broader economic cycles. Given its persistent weakness, the current level reinforces concerns about ongoing softness in the manufacturing sector.
Chicago PMI vs. ISM Manufacturing Index
Let's compare the Chicago PMI with the more popular national ISM manufacturing index. Over the 676 months of available data, the Chicago PMI has been higher 68% of the time. However, despite this frequent outperformance, its historical average of 54.2 is only slightly higher than the ISM’s 52.4.
It's clear the two indices tend to move together, however it’s important to note that the ISM Manufacturing Index is reported with a one-month lag.
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