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Ioana Marinescu

@imarinescu.bsky.social

4.7K followers 780 following 240 posts

Economist @PennSP2, former principal economist Department of Justice #Antitrust Division. #AI, labor, IO, public, macro. Better the world through knowledge. www.marinescu.eu

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Ioana Elena Marinescu is an associate professor of public policy at the University of Pennsylvania School of Social Policy and Practice, a faculty research fellow at the National Bureau of Economic Research, and a columnist for Libération, whose research is widely covered in the popular media. .. more

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Ioana Marinescu @imarinescu.bsky.social · Dec 11

🚨 New paper alert! 🚨 Co-authored with Jose Azar: Chapter 10 - Monopsony Power in the Labor Market, in the Handbook of Labor Economics. doi.org/10.1016/bs.h... Honored to contribute to this series that inspired me as a young researcher! 🙌 #EconSky 🧵

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Reposted by Ioana Marinescu

Centre for Economic Policy Research @cepr.org · 14d

AI Acquihires: Competition Risks, Talent Battles and Economic Spillovers Webinar - 8 October @ 17:00 CEST

🗣️Jonathan Kanter @lugaricano.bsky.social @imarinescu.bsky.social @igorletina.bsky.social Hans Zenger

Moderator: @florianederer.bsky.social
Register: cepr.org/events/ai-ac...
#EconSky

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Ioana Marinescu @imarinescu.bsky.social · 18d

Some context: I used to ask “what are you working on?” but I learned some people would rather not talk about it for various reasons. So the more general “what are you excited about in your field?” lets them EITHER talk about what they’re working on or some other interest.

Ioana Marinescu @imarinescu.bsky.social · 18d

Fellow economists, what kind of question would you most like to be asked when meeting someone at a conference? #EconSky
1. What are your working on?
2. What is your field?
3. What is exciting in your field?
4. Other: spill the beans!

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Reposted by Joanna Bryson, Ioana Marinescu

Aaron Sojourner @aaronsojourner.org · 23d

Common Ownership & Employee Earnings
updated & improved

Consider a pair of companies that sell into the same product market. If pair shares common owners, the owners have incentive for pair to soften competition.

Same with local labor market competition
papers.ssrn.com/sol3/papers....

Common Ownership and Employee Earnings *
José Azar Xin Dai Yue Qiu Aaron Sojourner
September 15, 2025
Abstract
Using administrative data in the manufacturing sector from the U.S. Census Bureau, this paper provides the first evidence on the effect of common ownership on
employee earnings. Using firms’ additions to the S&P 500 index as a shock to their
local competitors’ common ownership, we find that, after a same-industry competitor enters the S&P 500 index, the average employee earnings of S&P 500 incumbents
in the same local labor market decrease. Additionally, these firms’ employment increases. These findings are inconsistent with the canonical oligopsony models but our generalized model of oligopsony incorporating a recruitment intensity margin can rationalize them

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Ioana Marinescu @imarinescu.bsky.social · Jul 11

Proud to support @anthropic.com’s new Economic Futures Program as a member of their Economic Advisory Council!
• Research grants up to $50,000 (rolling basis)
• Policy proposal competition
• Expanded Economic Index data access
Apply: www.anthropic.com/economic-futures
#AI #EconSky

Anthropic Economic Futures

A multidisciplinary program funding research grants, policy development, and data infrastructure to help society understand and navigate AI's economic transformation.

www.anthropic.com

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Ioana Marinescu @imarinescu.bsky.social · Jul 11

Also see this: bsky.app/profile/prof...

Fiona Scott Morton @proffionasm.bsky.social · Jul 11

A center for conservative thought creates a market test: can its scholars develop logical, strong, useful ideas that stand up to the intellectual questioning of students and colleagues? It may be hard to defend racism & autocracy good, science bad, oligarchs should get all society’s wealth, etc

Ioana Marinescu @imarinescu.bsky.social · Jul 11

“Us vs. them” mentality is not the way to intellectual progress nor to a healthy democratic debate.👇

Ioana Marinescu @imarinescu.bsky.social · Jul 11

There are no homogeneous blocks but loose webs of ideas and those in power pick and choose depending on the interests of the moment. Having a stronger broader web of ideas that have been tested through intellectual debate is useful.

Reposted by Ioana Marinescu

Fiona Scott Morton @proffionasm.bsky.social · Jul 11

Ioana Marinescu @imarinescu.bsky.social · Jul 11

“Us vs. them” mentality is not the way to intellectual progress nor to a healthy democratic debate.👇

Evan Bernick, a finite mode with a smol hooman and a lorg floof @evanbernick.bsky.social · Jul 11

This would be an extremely bad idea. It will not satisfy them. It will acknowledge that they are right about something. It will empower them. Literally nothing that anyone should do, should be oriented towards placating this administration.

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Ioana Marinescu @imarinescu.bsky.social · Jul 11

“Us vs. them” mentality is not the way to intellectual progress nor to a healthy democratic debate.👇

Evan Bernick, a finite mode with a smol hooman and a lorg floof @evanbernick.bsky.social · Jul 11

The Wall Street Journal @wsj.com · Jul 11

Exclusive: Harvard leaders have discussed creating a center for conservative scholarship as the school fights the Trump administration’s accusations that it is too liberal.

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Reposted by Ioana Marinescu

Maximilian Kasy @maxkasy.bsky.social · Jul 11

🧨 New draft dropped:🧨
"Cash Transfers,
Mental Health and Agency:
Evidence from an RCT in Germany"
maxkasy.github.io/home/files/p...

Companion paper to our paper on basic income and labor supply.
Corresponding author Freddie Schwerter (@freddieschwerter.bsky.social).
#basicincome #UBI

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Reposted by Ioana Marinescu, Michael Jones‐Correa

Evan Bernick, a finite mode with a smol hooman and a lorg floof @evanbernick.bsky.social · Jul 11

The Wall Street Journal @wsj.com · Jul 11

Exclusive: Harvard leaders have discussed creating a center for conservative scholarship as the school fights the Trump administration’s accusations that it is too liberal.

Harvard Explores New Center for Conservative Scholarship Amid Trump Attacks

The Ivy League school has discussed an effort to ‘support viewpoint diversity’ with potential donors. Harvard says the initiative ‘will not be partisan.’

on.wsj.com

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Reposted by Ioana Marinescu, Juan Moreno‐Cruz, Andreas Haupt

Simon Jäger @simonjaeger.bsky.social · Jul 11

Very excited that our paper (joint with Jarkko Harju and ‪@schoefer.bsky.social‬) on "Voice at Work" is published in the American Economic Journal: Applied Economics. We study what happened when workers in Finnish firms got a right to worker voice on the corporate board. 👇

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Ioana Marinescu @imarinescu.bsky.social · Jul 8

Yes, continuing unemployment claims are up, but the US labor market remains remarkably stable across most indicators in 2025. Context matters: this is a slight softening, not a crisis. My analysis in @Forbes.com explains the full picture www.forbes.com/sites/zachar... #EconSky

More Americans Staying On Unemployment Amid ‘Slight Slowdown’ Of Economy

Losses in service jobs sparked the first negative job growth in two years.

www.forbes.com

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Reposted by Ioana Marinescu

Aaron Sojourner @aaronsojourner.org · Jul 3

The report looks strong. The Powell attack was disconnected.

+147K jobs gained last month (mid-May to mid-June).
+16K jobs in revisions of prior 2 months

The big picture

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Reposted by Ioana Marinescu

Catherine Rampell @crampell.bsky.social · Jul 3

Huge sleeper issue is how states will (or won’t) be able to absorb huge SNAP cuts in BBB. www.inquirer.com/politics/pen...

Gov. Josh Shapiro said he’s not sure SNAP will be able to exist in Pa. under President Trump’s megabill

Pennsylvania won't be able afford the cost of federal food assistance if Trump's tax and spending plan becomes reality, Shapiro said.

www.inquirer.com

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Aaron Sojourner @aaronsojourner.org · Jun 6

EXTREMELY BAD NEWS for economic research, per former BLS Commissioner @ericagroshen.bsky.social on LinkedIn.

BLS is suspending access to its restricted data "for the forseeable future." Applies to projects through the Federal Statistical Research Data Centers & onsite projects with BLS.
#EconSky

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Ioana Marinescu @imarinescu.bsky.social · May 16

So excited to witness the opening of a new pedestrian bridge in Philadelphia!!! This was a special preview event and the official opening is on Saturday: schuylkillbanks.org. #Philly proud!

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Reposted by Ioana Marinescu

Antoine Germain @ant1germain.bsky.social · May 8

JM update: it's been a while that I should have announced here that this summer I'll join @upenn.edu
as a postdoc working with @imarinescu.bsky.social . I really look forward to it and I am immensely grateful to my letter writers for support on this #econjobmarket !

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Ioana Marinescu @imarinescu.bsky.social · Apr 28

Thanks Daniel!

Ioana Marinescu @imarinescu.bsky.social · Apr 28

The Council will help inform help inform the Anthropic Economic Index, which you can download for free to better understand how #AI is used in various jobs. Download here #EconSky: www.anthropic.com/economic-ind...

Anthropic Economic Index

Understanding AI’s effects on the economy over time

www.anthropic.com

Reposted by Ioana Marinescu

The New York Times @nytimes.com · Apr 17

Breaking News: Google acted illegally to maintain a monopoly in some online advertising technology, a federal judge ruled.

Google Is a Monopolist in Online Advertising Tech, Judge Says

The ruling was the second time in a year that a federal court had found that Google had acted illegally to maintain its dominance.

www.nytimes.com

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Reposted by Ioana Marinescu

Kelly Foley @kellyfoley.bsky.social · Apr 7

Registration for the @cleforum.bsky.social conference (April 25 & 26 in Toronto, in partnership with @stone-centre-ubc.bsky.social ) open until April 15. Join us for a keynote lecture by @imarinescu.bsky.social and papers on wide variety of labour topics: stonecentre.economics.ubc.ca/call-for-pap...

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Reposted by Ioana Marinescu, Trevor Tombe

Ryan Cummings @weakinstrument.bsky.social · Apr 3

If you do this since 1929, it's even worse.

Today was worse than 99.6% of trading days since 1929. It was the 95th worst day of all time (out of >24,000 days), and the 35th worst day since 1945.

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Reposted by Ioana Marinescu

Stone Centre on Wealth and Income Inequality at UBC @stone-centre-ubc.bsky.social · Mar 27

The Stone Centre is proud to be a sponsor of the upcoming @cleforum.bsky.social conference, featuring presentations from @imarinescu.bsky.social, Stone Centre Director, Thomas Lemieux, and many others. Registration is now open: stonecentre.economics.ubc.ca/news-and-eve...

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Ioana Marinescu @imarinescu.bsky.social · Mar 18

Reminder: you have until March 31 to apply for this #AI funding opportunity, Looking forward to reading your proposals! #EconSky 👇

Ioana Marinescu @imarinescu.bsky.social · Feb 26

🚀 Funding opportunity (now with correct link)! 🚀
What does #AI mean for the labor market? 🤔
I'm excited to partner with Schmidt Sciences to offer up to $200,000 in funding for early-career researchers!
🗓️ Deadline March 31 2025 🗓️
🙏 Share! #EconSky
🔗 Learn more & apply: schmidtsciences.org/ai-at-work/

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Ioana Marinescu @imarinescu.bsky.social · Mar 12

😂 I didn’t know Brooks was THAT unpopular. Your choice, kid!

Ioana Marinescu @imarinescu.bsky.social · Mar 12

🎁 gift link to article: www.nytimes.com/2025/03/06/o...

Opinion | David Brooks on Why the Democrats Are Losing to Trump (Gift Article)

The columnist shares his thoughts on Donald Trump’s second term.

www.nytimes.com

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Ioana Marinescu @imarinescu.bsky.social · Mar 12

Are the 2020s the disaster decade? David Brooks thinks every historical time has its own disaster, except maybe the 1990s. I grew up in the 1990s, so maybe that’s one more way I’ve been very lucky. What do you think? 1990s yay or nay? 🤔

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Ioana Marinescu @imarinescu.bsky.social · Mar 11

Excited to speak at Penn’s School of Social Policy & Practice’s webinar on climate’s influence on health, politics, and the labor force.

Register here: upenn.zoom.us/webinar/regi...

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Ioana Marinescu @imarinescu.bsky.social · Mar 10

@cwodicka.bsky.social and I are doing some research on this…