Common and Idiosyncratic Inflation

52 Pages Posted: 18 May 2020

See all articles by Matteo Luciani

Matteo Luciani

Board of Governors of the Federal Reserve System

Multiple version iconThere are 2 versions of this paper

Date Written: March 5, 2020


We use a dynamic factor model to disentangle changes in prices due to economy-wide (common) shocks, from changes in prices due to idiosyncratic shocks. Using 146 disaggregated individual price series from the U.S. PCE price index, we find that most of the fluctuations in core PCE prices observed since 2010 have been idiosyncratic in nature. Moreover, we find that common core inflation responds to economic slack, while the idiosyncratic component does not. That said, even after filtering out idiosyncratic factors, the estimated Phillips curve is extremely flat post-1995. Therefore, our results suggest that the flattening of the Phillips curve is the result of macroeconomic forces.

Keywords: Core inflation; Dynamic factor model; Disaggregated consumer prices; Monetary policy

JEL Classification: C32; C43; C55; E31; E37

Suggested Citation

Luciani, Matteo, Common and Idiosyncratic Inflation (March 5, 2020). FEDS Working Paper No. 2020-024 , Available at SSRN: or

Matteo Luciani (Contact Author)

Board of Governors of the Federal Reserve System ( email )

20th Street and Constitution Avenue NW
Washington, DC 20551
United States

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Abstract Views
PlumX Metrics