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Discussion Paper
Inflation Persistence: Dissecting the News in January PCE Data
This post presents updated estimates of inflation persistence, following the release of personal consumption expenditure (PCE) price data for January 2023. The estimates are obtained by the Multivariate Core Trend (MCT), a model we introduced on Liberty Street Economics last year and covered most recently here and here. The MCT is a dynamic factor model estimated on monthly data for the seventeen major sectors of the PCE price index. It decomposes each sector’s inflation as the sum of a common trend, a sector-specific trend, a common transitory shock, and a sector-specific transitory shock. ...
Discussion Paper
Inflation Persistence: How Much Is There and Where Is It Coming From?
The surge in inflation since early 2021 has sparked intense debate. Would it be short-lived or prove to be persistent? Would it be concentrated within a few sectors or become broader? The answers to these questions are not so clear-cut. In our view, one should ask how much of the inflation is persistent and how much of it is broad-based. In this post, we address this question through a quantitative lens. We find that the large ups and downs in inflation over the course of 2020 were largely the result of transitory shocks, often sector-specific. In contrast, sometime in the fall of 2021, ...
Discussion Paper
Reintroducing the New York Fed Staff Nowcast
“Nowcasts” of GDP growth are designed to track the economy in real time by incorporating information from an array of indicators as they are released. In April 2016, the New York Fed’s Research Group launched the New York Fed Staff Nowcast, a dynamic factor model that generated estimates of current quarter GDP growth at a weekly frequency. The onset of the COVID-19 pandemic sparked widespread economic disruptions—and unprecedented fluctuations in the economic data that flow into the Staff Nowcast. This posed significant challenges to the model, leading to the suspension of publication ...
Discussion Paper
Inflation Persistence—An Update with December Data
This post presents an updated estimate of inflation persistence, following the release of personal consumption expenditure (PCE) price data for December 2022. The estimates are obtained by the Multivariate Core Trend (MCT), a model we introduced on Liberty Street Economics last year and covered most recently in a January post. The MCT is a dynamic factor model estimated on monthly data for the seventeen major sectors of the PCE price index. It decomposes each sector’s inflation as the sum of a common trend, a sector-specific trend, a common transitory shock, and a sector-specific transitory ...
Discussion Paper
Is the Recent Inflationary Spike a Global Phenomenon?
In the aftermath of the COVID-19 pandemic, inflation rose almost simultaneously in most economies around the world. After peaking in mid-2022, inflation then went into decline—a fall that was just as universal as the initial rise. In this post, we explore the interrelation of inflation dynamics across OECD countries by constructing a measure of the persistence of global inflation. We then study the extent to which the persistence of global inflation reflects broad-based swings, as opposed to idiosyncratic country-level movements. Our main finding is that the spike and subsequent moderation ...
Report
Nonlinear Micro Income Processes with Macro Shocks
We propose a nonlinear framework to study the dynamic transmission of aggregate and idiosyncratic shocks to household income that exploits both macro and micro data. Our approach allows us to examine empirically the following questions: (a) How do business-cycle fluctuations modulate the persistence of heterogeneous individual histories and the risk faced by households? (b) How do aggregate and idiosyncratic shocks propagate over time for households in different macro and micro states? (c) How do these shocks shape the cost of business-cycle risk? We develop new identification and estimation ...
Discussion Paper
Will the Moderation in Wage Growth Continue?
Wage growth has moderated notably following its post-pandemic surge, but it remains strong compared to the wage growth prevailing during the low-inflation pre-COVID years. Will the moderation continue, or will it stall? And what does it say about the current state of the labor market? In this post, we use our own measure of wage growth persistence – called Trend Wage Inflation (TWIn in short) – to look at these questions. Our main finding is that, after a rapid decline from 7 percent at its peak in late 2021 to around 5 percent in early 2023, TWin has changed little in recent months, ...
Report
Aggregate Output Measurements: A Common Trend Approach
We analyze a model for N different measurements of a persistent latent time series when measurement errors are mean-reverting, which implies a common trend among measurements. We study the consequences of overdifferencing, finding potentially large biases in maximum likelihood estimators of the dynamics parameters and reductions in the precision of smoothed estimates of the latent variable, especially for multiperiod objects such as quinquennial growth rates. We also develop an R2 measure of common trend observability that determines the severity of misspecification. Finally, we apply our ...
Report
A Measure of Trend Wage Inflation
We extend time-series models that have so far been used to study price inflation (Stock and Watson [2016a]) and apply them to a micro-level dataset containing worker-level information on hourly wages. We construct a measure of aggregate nominal wage growth that (i) filters out noise and very transitory movements, (ii) quantifies the importance of idiosyncratic factors for aggregate wage dynamics, and (iii) strongly co-moves with labor market tightness, unlike existing indicators of wage inflation. We show that our measure is a reliable real-time indicator of wage pressures and a good ...
Discussion Paper
The Layers of Inflation Persistence
In a recent post, we introduced the Multivariate Core Trend (MTC), a measure of inflation persistence in the core sectors of the personal consumption expenditure (PCE) price index. With data up to February 2022, we used the MCT to interpret the nature of post-pandemic price spikes, arguing that inflation dynamics were dominated by a persistent component largely common across sectors, which we estimated at around 5 percent. Indeed, over the year, inflation proved to be persistent and broad based, and core PCE inflation is likely to end 2022 near 5 percent. So, what is the MCT telling us today? ...