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Brave-Butters-Kelley Coincident Index (BBKQCOIX)


Q2 2021: 1.13944  
Updated: Oct 5, 2021


Standard Deviations,
Seasonally Adjusted


1Y | 5Y | 10Y | Max


Source: Federal Reserve Bank of Chicago  

Release: Brave-Butters-Kelley Indexes  

Units:  Standard Deviations, Seasonally Adjusted

Frequency:  Quarterly


The Brave-Butters-Kelley Indexes (BBKI) are a research project of the Federal Reserve Bank of Chicago. The BBK Coincident and Leading Indexes and Monthly GDP Growth for the U.S. are constructed from a collapsed dynamic factor analysis of a panel of 500 monthly measures of real economic activity and quarterly real GDP growth.

The BBK Coincident Index is the sum of the leading and lagging subcomponents of the cycle measured in standard deviation units from trend real GDP growth.

This quarterly series is aggregated from the monthly version of the series (BBKMCOIX), using the triangle average described in Brave, Butters, and Kelley (2019) to approximate quarterly annualized (log) percent changes from the monthly series.

For more details, see also:
Brave, Scott A., Ross Cole, and David Kelley, 2019, A 'big data' view of the U.S. economy: Introducing the Brave-Butters-Kelley Indexes, Chicago Fed Letter, Federal Reserve Bank of Chicago, No. 422. Crossref,
Brave, Scott A., R. Andrew Butters, and David Kelley, 2019, A new 'big data' index of U.S. economic activity, Economic Perspectives, Federal Reserve Bank of Chicago, Vol. 43, No. 1. Crossref,

Suggested Citation:

Federal Reserve Bank of Chicago, Brave-Butters-Kelley Coincident Index [BBKQCOIX], retrieved from FRED, Federal Reserve Bank of St. Louis;, October 17, 2021.


Brave-Butters-Kelley Indexes

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