Pierre Coster

PhD in Econ @USC - former RA & student @ECB @bse_barcelona @SciencesPo

[Pierre Coster @Pierre__Coster]

Well spotted Matt! Thanks a lot for sharing. I’ll be sharing an updated version over the summer!

[Matthew E. Kahn @mattkahn1966]

My vision is getting worse (and I don't wear glasses) but I still see Pierre in the Upper Left panel. Delighted to see young @USC_Econ scholars presenting new research. Here is his full poster;
https://t.co/IotgnyeeWA

[Pierre Coster @Pierre__Coster]

In our model, a €100 carbon tax reproduces this leakage and modestly cuts emissions; adding a carbon tariff reverses leakage but raises prices. Overall, tax+tariff is about 7× more effective than the tax alone at reducing emissions. Full paper: https://t.co/zffAeVm4WH

[Pierre Coster @Pierre__Coster]

Happy to share our research with Julian di Giovanni & @IsabelleMejean on Liberty Street Economics—two short posts on what can undermine a carbon tax, and what a carbon tariff is and why the EU is imposing it:
https://t.co/JmPTMQDE0P
https://t.co/4hJB2lDEIg

[Pierre Coster @Pierre__Coster]

In the paper, we study how firms adjust input sourcing when climate policy tightens. Using the EU ETS and French import/production data, we find clear carbon leakage: firms increasingly shifted ETS-regulated inputs toward non-EU suppliers, raising the outside-EU share by 4.3 p.p.

[VoxEU @voxeu]

Carbon leakage through firms’ supply chain adaptation
Pierre Coster @USC, Julian Di Giovanni @NewYorkFed, Isabelle Mejean @IsabelleMejean @sciencespo @ScPoEcon
https://t.co/NdC35W9lqQ

[Pierre Coster @Pierre__Coster]

Full draft: https://t.co/HnXiBynNRa

[Pierre Coster @Pierre__Coster]

Very happy to see our latest research with @IsabelleMejean and Julian di Giovanni featured on VoxEU.

How do firms adapt their supply chains under carbon pricing, and does it lead to carbon leakage? Read more: https://t.co/91ScOW0MoX

[Augustin Bergeron @ABergeron_econ]

Looking for a pre-doc to work with me and my co-authors on projects based in the DR Congo aimed at increasing tax capacity and fostering accountability. #predoc @econ_ra @predoc_org

Deadline Dec 15th.

Please share, retweet, and apply 👇

[Matthew E. Kahn @mattkahn1966]

I am delighted that @USC_Econ
will hire a junior macroeconomist. Progress not Regress!
https://t.co/FAVIPOnnKV

[Kylian Mbappé @KMbappe]

🇫🇷

[Robert Metcalfe @RDMetcalfe]

If you are applying to the @USC_Econ PhD program and are interested in applied micro (development, environmental, IO, labor, political economy, urban), please state what areas you'd like to work on and what professors you'd like to work with.

[Pierre Coster @Pierre__Coster]

@AlisonSete98 @urbanthoughts11 🥲🥲🥲

[Pierre Coster @Pierre__Coster]

@JoanMonrasEcon Amazing news! And welcome to the best coast ☺️

[Pierre Coster @Pierre__Coster]

@AlisonSete98 @noticiaisbr Me very soon ahah

[Pierre Coster @Pierre__Coster]

@s_mosquera_ @USC_Econ @bse_barcelona @ecb @ScPoEcon @santidemartini Indeed! Met him today :)
Wonderful, let’s definitely keep in touch!

[Pierre Coster @Pierre__Coster]

Delighted to share that today marks the first day of my PhD in Economics at @USC_Econ.

Thanks to all those who helped me get here, at the @bse_barcelona, @ecb & @ScPoEcon!

Can't wait to see what the next few years hold for me.

If you ever are in LA, let me know! ☀️🌊

[Pierre Coster @Pierre__Coster]

@alecauz1 @USC_Econ @bse_barcelona @ecb @ScPoEcon Thanks a lot Alessandro! I hope Toulouse is treating you well ;)

[Pierre Coster @Pierre__Coster]

@goescarlos @USC_Econ @bse_barcelona @ecb @ScPoEcon Thanks a lot Carlos!

[Pierre Coster @Pierre__Coster]

@manimetrix @USC_Econ @bse_barcelona @ecb @ScPoEcon Thanks a lot. Now, let’s see where I end up in 20 years!

[Pierre Coster @Pierre__Coster]

@Marlon_Boarnet @USC_Econ @bse_barcelona @ecb @ScPoEcon @USC @USCPrice Thanks a lot for the warm welcome. Can’t wait to discover everything USC has to offer!