Chicago Fed National Activity Index: Diffusion Index

CFNAIDIFF • Economic Data from Federal Reserve Economic Data (FRED)

Latest Value

-0.37

Year-over-Year Change

117.65%

Date Range

5/1/1967 - 6/1/2025

Summary

The Chicago Fed National Activity Index Diffusion Index tracks the breadth of economic activity across multiple sectors and indicators. It provides a comprehensive view of overall economic momentum by measuring how widespread economic growth or contraction is across different economic dimensions.

Analysis & Context

This economic indicator provides valuable insights into current market conditions and economic trends. The data is updated regularly by the Federal Reserve and represents one of the most reliable sources for economic analysis.

Understanding this metric helps economists, policymakers, and investors make informed decisions about economic conditions and future trends. The interactive chart above allows you to explore historical patterns and identify key trends over time.

About This Dataset

This diffusion index represents the percentage of indicators showing positive or negative movement in the Chicago Fed National Activity Index. Economists use it to assess the synchronization and distribution of economic signals across various economic sectors and components.

Methodology

The index is calculated by determining the proportion of individual economic indicators showing positive or negative movement relative to their historical trends.

Historical Context

Policymakers and investors use this diffusion index to understand the broader economic landscape and potential turning points in economic cycles.

Key Facts

  • Measures the breadth of economic activity across multiple sectors
  • Provides insight into economic momentum and synchronization
  • Helps identify potential economic turning points

FAQs

Q: What does a high diffusion index value indicate?

A: A high diffusion index value suggests widespread positive economic activity across multiple sectors and indicators.

Q: How frequently is this index updated?

A: The Chicago Fed National Activity Index is typically updated monthly with the most recent economic data.

Q: What sectors are included in the calculation?

A: The index incorporates indicators from production, employment, income, personal consumption, and housing sectors.

Q: How do economists use this diffusion index?

A: Economists use this index to assess overall economic health, potential recession risks, and the synchronization of economic signals.

Q: What are the limitations of this index?

A: The diffusion index provides a broad overview and should be used in conjunction with other economic indicators for comprehensive analysis.

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Citation

U.S. Federal Reserve, Chicago Fed National Activity Index: Diffusion Index [CFNAIDIFF], retrieved from FRED.

Last Checked: 8/1/2025

Chicago Fed National Activity Index: Diffusion Index | US Economic Trends