The Chicago Fed's National Activity Index is a monthly indicator designed to gauge overall economic activity and related inflationary pressure. It is a composite of 85 monthly indicators as explained in this background PDF file on the Chicago Fed's website. The CFNAI is a forward-looking indicator that suggests how the economy will likely look in the near term and has been called one of the "most important and overlooked economic indicators". The index is constructed so a zero value for the index indicates that the national economy is expanding at its historical trend (average) rate of growth. Negative values indicate below-average growth, and positive values indicate above-average growth.
The Chicago Fed National Activity Index (CFNAI) fell to -0.03 in January from +0.18 in December. Two of the four broad categories of indicators used to construct the index decreased from December and one category made a negative contributions in January.
The first chart below shows the complete CFNAI historical series dating from March 1967 with a callout to the most recent 12 months. The dots show the indicator itself, which is quite noisy and volatile from month to month. The three-month moving average (CFNAI-MA3) is more useful and consistent as an indicator of the actual trend for economic activity. The index's three-month moving average, CFNAI-MA3, increased to +0.03 in January from -0.13 in December. This is the first positive reading since October 2022.
The next chart highlights the +0.7 and -0.7 levels. The callout explains the significance of these parameters according to the Chicago Fed.
The next chart includes an overlay of GDP. For the most part, the CFNAI-MA3 has been positive while the economy has expanded and been negative while the economy contracts. Surprisingly, this has not been the case for the past few years. The MA3 was negative from November 2022 through December 2024 while the U.S. economy expanded during that same time frame.
The Long-Term Economic Trend in the CFNAI
In the next chart, I've let Excel draw a linear regression through the CFNAI data series. The slope confirms the casual impression of the previous charts that national activity, as a function of the 85 indicators in the index, has been declining since its inception in the late 1960s, a trend that roughly coincides with the transition from a good-producing to a post-industrial service economy in the information age.
Chicago Fed National Activity Index Component Breakdown
The Chicago Fed's National Activity Index is based on 85 economic indicators drawn from four broad categories of data:
- Production and income
- Sales, orders, and inventories
- Personal consumption and housing
- Employment, unemployment, and hours
As stated earlier, two of the four broad categories of indicators used to construct the index decreased from December and one category made a negative contributions in January. The next set of charts show each of the four components since 1967. Because of the highly volatile nature of the data, the charts are based on three-month moving averages, a smoothing strategy favored by the Chicago Fed economists.
To close, let's overlay the four components of the index to see how these pieces have moved together over time.
Read more updates by Jen Nash
