Categories > Money, Banking, & Finance > Financial Indicators > Financial Activity Measures

# Chicago Fed National Activity Index: Diffusion Index (CFNAIDIFF)

Observation:

May 2017: -0.08 (+ more)Updated: Jun 26, 2017

May 2017: | -0.08 | |

Apr 2017: | 0.10 | |

Mar 2017: | 0.00 | |

Feb 2017: | 0.12 | |

Jan 2017: | 0.01 | |

View All |

Units:

Index,Not Seasonally Adjusted

Frequency:

MonthlyChicago Fed National Activity Index: Diffusion Index

**Enter date as YYYY-MM-DD**

#### Customize data:

Write a custom formula to transform one or more series or combine two or more series.

You can begin by adding a series to combine with your existing series.

Now create a custom formula to combine or transform the series.

Need help? []

For example, invert an exchange rate by using formula 1/a, where “a” refers to the first FRED data series added to this line. Or calculate the spread between 2 interest rates, a and b, by using the formula a - b.

Use the assigned data series variables (a, b, c, etc.) together with operators (+, -, *, /, ^, etc.), parentheses {(,)}, and constants (1, 1.5, 2, etc.) to create your own formula (e.g., 1/a, a-b, (a+b)/2, (a/(a+b+c))*100). As noted above, you may add other data series to this line before entering a formula.

Finally, you can change the units of your new series.

**Enter date as YYYY-MM-DD**

#### Add data series to graph:

**Data in this graph are copyrighted. Please review the copyright information in the series notes before sharing.**

**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, July 26, 2017.

## Related Resources

## Related Categories

## Sources

## Releases

## Tags

### Confirm Delete

Are you sure you want to remove this series from the graph? This can not be undone.