Is the measured rise in markups driven by one sector?
Core argument: In the full sample excluding Finance & Insurance, the average markup rises only modestly, from just below 1.30 in the mid-1980s to about 1.35 in 2016.
Figure 1 plots three estimates of the average markup over time. The solid red line is the estimate provided in [The Rise of Market Power, Jan De Loecker, Jan Eeckhout and Gabriel Unger] (DEU). The dashed green line is what we obtain from the full sample—i.e., without dropping missing values for Capital or SG&A. Finally, the dash dot black line is what we obtain with the full sample excluding the Finance & Insurance sector. Using the DEU sample, the average markup increases rapidly throughout the 1980s and 1990s, pauses in the 2000s, then increases rapidly again in the final few years of the sample. In the full sample, the average markup increases more gradually through 2008. It then sharply increases in the last few years of the sample, ending at a similar level as in the DEU sample. Moreover, unlike the DEU results, which are robust to the exclusion of individual sectors, in the full sample the increase in markups at the end of the sample is driven almost entirely by a single sector: Finance & Insurance. Excluding F&I, the average markup increases only modestly, from just below 1.30 in the mid-1980s to about 1.35 in 2016. We conclude that the DEU methodology and data, as they are described in the article, do not support the conclusion that broad-based increases in market power have occurred in recent decades.


