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Pol Antras

@pantras.bsky.social

3.5K followers 160 following 26 posts

Economics Professor at Harvard University

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Pol Antras @pantras.bsky.social · 21d

I am very much looking forward to this event in Stockholm in October.

If you are a local, and want to attend, you can find more information here: www.kommerskollegium.se/en/analyses-...

Pol Antras @pantras.bsky.social · 21d

Thank YOU for the invitation. It was great fun to visit Cologne after so many years, and to attend the first day of #VfS_Conf2025

In case you are interested, here are the slides of my talk: t.co/NKxEXeda4N

Reposted by Pol Antras

CIDOB (Barcelona Centre for International Affairs) @cidobbarcelona.bsky.social · Jun 17

"Trump está convencido de que el libre comercio no es la manera óptima de manejar la globalización", nuevo #CIDOBinconversation con @pantras.bsky.social, profesor de economía en Harvard, sobre la agenda económica internacional y el impacto de las políticas de Trump
▶️ bit.ly/CIDOBinconve...

Pol Antras @pantras.bsky.social · Apr 5

I visited the University of Basel last December and sat down with Rolf Weder to discuss several aspects of my research and of global trade. A lot has changed in the last 4 months, but some of what I say may still be of relevance😅

Link to the interview: innoscape.ch/de/publikati...

Innoscape | Pol Antràs | Innoscape Talk #11

Reposted by Pol Antras

John McLaren @johnmclaren.bsky.social · Feb 23

Sounds like a fantastic event!

Pol Antras @pantras.bsky.social · Nov 14

Alejandro Cuñat, Harald Fadinger, Kalina Manova and I are organizing the 8th Workshop on International Economic Networks (WIEN) to take place in beautiful Vienna on June 26-7, 2024. Send us a paper for consideration! We're particularly keen on receiving submissions from young scholars.

Reposted by Pol Antras

Pol Antras @pantras.bsky.social · Nov 14

Alejandro Cuñat, Harald Fadinger, Kalina Manova and I are organizing the 8th Workshop on International Economic Networks (WIEN) to take place in beautiful Vienna on June 26-7, 2024. Send us a paper for consideration! We're particularly keen on receiving submissions from young scholars.

Pol Antras @pantras.bsky.social · Feb 13

10/ Want to dig deeper?

Full paper: antras.scholars.harvard.edu/sites/g/file...

Short version for AEA P&P: antras.scholars.harvard.edu/sites/g/file...

Our six-digit NAICS measure of the APP can be downloaded here: antras.scholars.harvard.edu/sites/g/file...

Replication package available soon.

antras.scholars.harvard.edu

Pol Antras @pantras.bsky.social · Feb 13

9/ Key takeaway: Production length is an important but overlooked aspect of production and firm behavior. We hope that our measure will find broader applications across fields.

Pol Antras @pantras.bsky.social · Feb 13

8/ The negative relationship between APPs and capital costs holds across countries and industries. Even in sector-specific regressions, most industries show a similar pattern.

Pol Antras @pantras.bsky.social · Feb 13

7/ Extending the analysis worldwide: APP rankings are highly correlated across countries. Some industries naturally require long production periods, regardless of where they are carried out.

Pol Antras @pantras.bsky.social · Feb 13

6/ Industry correlations: Higher APP industries tend to be more skill-intensive but less physical capital-intensive. This suggests an interesting dichotomy between working capital intensity and physical capital intensity.

Pol Antras @pantras.bsky.social · Feb 13

5/ Since 2006, APP in U.S. manufacturing has risen as the cost of capital has fallen. Our regression results suggest that about 19% of this increase is due to cheaper borrowing costs.

Pol Antras @pantras.bsky.social · Feb 13

4/ Across industries and countries, APP is remarkably stable. Industries with complex production processes (e.g., pharmaceuticals, distilleries) have longer APPs, while perishable and commodity producers have shorter APPs.

Pol Antras @pantras.bsky.social · Feb 13

3/ Using firm-level data from various countries, we confirm a key theoretical prediction: firms facing a higher capital costs feature shorter production periods. As interest rates rise, firms shorten their production lengths.

Pol Antras @pantras.bsky.social · Feb 13

2/ APP is defined as a weighted average distance between the time a firm employs its inputs and the time these inputs deliver finished goods. In steady state, APP turns out to simplify to the ratio of inventories to the cost of goods sold (COGS). A simple yet informative metric!

Pol Antras @pantras.bsky.social · Feb 13

1/ 📢 New paper alert! 📄 Together with Vitalii Tubdenov, we propose a measure of the "Average Period of Production" (APP) to capture the temporal dimension of production processes. It is inspired by Böhm-Bawerk’s capital theory.

Pol Antras @pantras.bsky.social · Feb 11

What would be the impact of Trump's announced 25% tariff on all steel and aluminium imports? Lydia Cox's (coxlydia.com) job-market paper, now an R&R at the American Economic Review, provides good guidance. Latest version is here (coxlydia.com/papers/cox_s...).

Pol Antras @pantras.bsky.social · Feb 4

Very grateful to the @jeeanews.bsky.social for the super quick turnaround, and to the editor and referees for their constructive comments! @romainwacziarg.bsky.social @Referee_1 @Referee_2 @Referee_3

jeeanews.bsky.social @jeeanews.bsky.social · Feb 4

Forthcoming article by @pantras.bsky.social "The Uncharted Waters of International Trade"JEEA FBBVA Lecture 2024 @eeanews.bsky.social
doi.org/10.1093/jeea...

The Uncharted Waters of International Trade

Abstract. The field of international trade has undergone significant theoretical and empirical advancements over the last 25 years. A key breakthrough has

Pol Antras @pantras.bsky.social · Jan 23

Gràcies, Laia!

Reposted by Pol Antras

Laia Balcells @laiabalcells.bsky.social · Jan 22

Gran entrevista al Catedràtic d'Economia @pantras.bsky.social al Via Lliure de Rac1: www.rac1.cat/internaciona...

Pol Antràs, catedràtic d'Economia a Harvard: "Aquí els estudiants no tenen problema de preguntar; a Catalunya et diuen pilota"

Fa 25 anys, Pol Antràs va marxar cap als Estats Units i des de llavors viu allà, concretament a la ciutat de Boston. Investigador i professor d'economia,

Pol Antras @pantras.bsky.social · Jan 5

The great
Daniel Ramos-Menchelli will present a preliminary version of our new joint paper with Edu Morales on "Trade and Welfare under Oligopolistic Competition." We hope to post a draft soon, but here is a link to our slides: t.co/XcFgV3KszJ

And here's the abstract:

Pol Antras @pantras.bsky.social · Jan 5

If you are still around San Francisco for the #ASSA2025 meeting, please come check out this session on oligopoly and international trade.

Pol Antras @pantras.bsky.social · Jan 4

I will be presenting a new paper with Vitalii Tubdenov on "Measuring the Average Period of Production." We will post a draft very soon, but here are our slides: scholar.harvard.edu/sites/schola...

scholar.harvard.edu

Pol Antras @pantras.bsky.social · Jan 4

I'm in San Francisco for the #ASSA2025 meetings. If you around and up early, come check out this session on inventories and international trade.

Reposted by Pol Antras

NBER @nber.org · Jan 2

Outlining several unexplored areas in international trade, from Pol Antràs https://www.nber.org/papers/w33312