The Chicago Fed National Activity Index (CFNAI
) is a monthly index of U.S. economic activity constructed to summarize variation in 85 data series classified into four groups: production and income; employment, unemployment and hours; personal consumption and housing; and sales, orders and inventories. The index is designed as a coincident indicator of national economic activity and serves as a leading indicator of activity-related inflationary pressures. In this Chicago Fed Letter
, the author reexamines the relationship between the CFNAI and business cycle turning points.