From the Chicago Fed: Index Points to a Moderation in Economic Growth in September



The Chicago Fed National Activity Index (CFNAI) decreased to +0.17 in September from +0.27 in August. Two of the four broad categories of indicators that make up the index decreased from August, but three of the four categories made positive contributions to the index in September. The index’s three-month moving average, CFNAI-MA3, moved down to +0.21 in September from +0.27 in August.

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The index is a weighted average of 85 indicators of growth in national economic activity drawn from four broad categories of data: 1) production and income; 2) employment, unemployment, and hours; 3) personal consumption and housing; and 4) sales, orders, and inventories.

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A zero value for the monthly index has been associated with the national economy expanding at its historical trend (average) rate of growth; negative values with below-average growth (in standard deviation units); and positive values with above-average growth.

This graph shows the Chicago Fed National Activity Index (three month moving average) since 1967.This suggests economic activity was slightly above the historical trend in September (using the three-month average).According to the Chicago Fed: