FRED has added the Brave-Butters-Kelley Indexes (BBKI), a research project from the Federal Reserve Bank of Chicago. The BBK Coincident and Leading Indexes and Monthly GDP Growth for the U.S. are constructed from a large panel of monthly measures of real economic activity and quarterly real GDP growth. Monthly GDP growth is indexed to the quarterly estimates from the U.S. Bureau of Economic Analysis and consists of three components: cycle, trend, and irregular components.

Explore the monthly and quarterly BBK indexes in FRED here.