Federal Reserve Economic Data

Chicago Fed National Activity Index: Diffusion Index (CFNAIDIFF)

May 2025: -0.24
Updated: Jun 26, 2025 7:34 AM CDT
May 2025:  -0.24  
Apr 2025:  -0.03  
Mar 2025:  0.00  
Feb 2025:  0.16  
Jan 2025:  0.07  
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Units:

Index,
Not Seasonally Adjusted

Frequency:

Monthly

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Notes

Source: Federal Reserve Bank of Chicago  

Release: Chicago Fed National Activity Index  

Units:  Index, Not Seasonally Adjusted

Frequency:  Monthly

Notes:

The CFNAI Diffusion Index is a metric based on the magnitude of the weight given to each of the underlying indicators in the CFNAI when constructing the index as their weighted average. The index is calculated as the sum of the absolute values of the underlying indicators whose contribution to the CFNAI is positive in a given month less the sum of the absolute values of the weights for those indicators whose contribution is negative or neutral, expressed as a proportion of the total sum of the absolute values of the weights. By construction, the sum of the absolute values of the CFNAI weights is one. To make this measure comparable to the CFNAI-MA3, the three-month moving average is calculated. Source: http://www.chicagofed.org/digital_assets/publications/cfnai/background/cfnai_background.pdf

Suggested Citation:

Federal Reserve Bank of Chicago, Chicago Fed National Activity Index: Diffusion Index [CFNAIDIFF], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CFNAIDIFF, .

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