Hannes Ullrich
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hannesullrich.com
Hannes Ullrich
@hannesullrich.com
Economist at DIW Berlin, University of Copenhagen, and Berlin School of Economics

Research on Digitilization, Health Care, and Industrial Organization

https://www.hannesullrich.com
Pinned
Now published in the December issue of Quantitative Marketing and Economics: link.springer.com/article/10.1...

#QME has a very efficient, no BS editorial policy. Can highly recommend!
Reposted by Hannes Ullrich
#econsky et al. I am happy to announce the #call_for_papers for the 2026 Economics of Mental Health Workshop!
The workshop is hosted by @peibich.bsky.social at Paris Dauphine and takes place from June 22-23. They keynotes are @jcmecon.bsky.social & Marco Bertoni. 1/n
January 26, 2026 at 10:28 AM
Reposted by Hannes Ullrich
A spark of action from the European Commission on social media recommender algorithms at long last ec.europa.eu/commission/p...
Commission investigates Grok and X\'s recommender systems under the Digital Services Act
The European Commission has launched a new formal investigation against X under the Digital Services Act (DSA).
ec.europa.eu
January 26, 2026 at 11:16 AM
Reposted by Hannes Ullrich
Despite the focus on small boats, most refugees stay in poor countries.

I went to Sudan, where nearly 1/3 of the population has left their homes, to see how the UN is coping with Trump's cuts and the west's retreat.

Sudan is a brutal, forgotten war. Please do read: as.ft.com/r/7db76b9a-8...
Adapt, shrink or die: the global crisis in humanitarian aid
[FREE TO READ] The UN’s outgoing High Commissioner for Refugees on the west’s retreat in Sudan, the folly of abandoning state-building and ‘necessary anger’
as.ft.com
January 26, 2026 at 9:11 AM
Reposted by Hannes Ullrich
Many discussions about 🇪🇺 tech sovereignty. 👇🏻

A fascinating aspect, sometimes overlooked, is the public's behavioral reaction to MAGA: e.g., how many people and institutions will drop PayPal and use Wero?

(A coordination problem where every user attracts others.)

werotracker.eu
January 25, 2026 at 11:45 AM
Reposted by Hannes Ullrich
We are looking forward to the second edition of the @diw.de - @oecd-ocde.bsky.social Industrial Strategy Dialogue on upcoming Monday, January 26 at 11:30 AM – join us in person at DIW Berlin or follow the event via livestream!
📝Registration & livestream: www.diw.de/en/diw_01.c....
January 22, 2026 at 9:38 AM
Reposted by Hannes Ullrich
Join us in person or virtually for the second @diw.de - @oecd-ocde.bsky.social Industrial Strategy Dialogue on Monday, Jan 26 (11:30-13:00) in Berlin:
"Industrial Policies and Market Dynamism – what role for competition policy in industrial strategies?"
🔗 www.diw.de/de/diw_01.c....
January 16, 2026 at 1:45 PM
Reposted by Hannes Ullrich
📣 Call for Papers

Join us for the 2nd Berlin PhD Conference in Economics on July 6-8, 2026.

🗓 July 6-8, 2026
⏰ Application deadline: 25 January 2026

🔗 Learn more & apply: berlinschoolofeconomics.de/event-detail...

@wzb.bsky.social @hertieschool.bsky.social #phdconference
December 11, 2025 at 3:10 PM
Reposted by Hannes Ullrich
🏔️ We’re hiring: Data Steward & Research Software Officer

Support our active research community in

🔹 Developing and maintaining research data infrastructure
🔹 Developing cutting-edge statistical software
🔹 Being at the forefront of conducting reproducible research

econjobmarket.org/positions/12...
EJM - Econ Job Market
econjobmarket.org
January 9, 2026 at 3:14 PM
Reposted by Hannes Ullrich
Of the big four 🇺🇸 🇪🇺 🇷🇺 🇨🇳, three are ruled by people who want to increase their empires by force.

Do they even notice that the fourth, 🇪🇺, is the only one that is actually growing?

Interesting discussion of Greenland in this thread and article.👇🏼
(Thought)provoking proposal by ex-German minister Habeck and Andreas Raspotnik to offer Greenland to come back into the EU:
Trump is ready to grab Greenland. The EU should move first – and offer it membership | Robert Habeck and Andreas Raspotnik
January 12, 2026 at 1:35 PM
Reposted by Hannes Ullrich
There's A LOT going on right now in struggle b/w democracy & authoritarianism, so it's hard to keep up. But it's going to be REALLY important that we pay attention to (and keep pushing back against) how election lies (from 2020) are being mobilized in ways that threaten election integrity in 2026.
Judge blocks Trump’s elections order in lawsuit by vote-by-mail states Oregon and Washington
A Trump executive order included new requirements to prove citizenship and a demand that all mail ballots be received by Election Day.
www.seattletimes.com
January 10, 2026 at 7:12 PM
Reposted by Hannes Ullrich
I have a new paper w Andrea Prat & Jake Spitz. We show that Republican appointed Supreme Court Justices vote in favor of the richer party by over 70% today, as compared to D’s at 30%. In the 1950s and both were at 50%. This strong trend may contribute to rising inequality. www.nber.org/papers/w34643
Ruling for the Rich: the Supreme Court over Time
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, an...
www.nber.org
January 5, 2026 at 9:14 AM
Reposted by Hannes Ullrich
The celebration and digital metastasization of conspiratorial thinking culminating with the U.S. head of health and human services believing that and governing as if modern diseases don’t emerge naturally, pandemics are all manmade, and science (not the complexities of nature) is to blame.
December 28, 2025 at 7:39 PM
Reposted by Hannes Ullrich
"It is going to get so much worse."
For the first of two end-of-the-year episodes of @pandemia.bsky.social, I talked to @drdemetre.bsky.social about what happened in 2025 at the CDC and how he thinks about the future of vaccines and public health in the US.
A quick 🧪🧵
Impfen | Es wird noch viel schlimmer werden
Podcast Episode · Pandemia · 22/12/2025 · 40m
podcasts.apple.com
December 23, 2025 at 11:52 AM
Reposted by Hannes Ullrich
Pretty cool year in review by @cloudflare.social radar.cloudflare.com/year-in-revi...

Some interesting facts:
- Snapchat and LinkedIn now outperforming X
- Perplexity saw more traffic than Gemini in 2025
...
Cloudflare Radar 2025 Year in Review
The Cloudflare Radar 2025 Year In Review features interactive charts, graphs, and maps you can use to explore what changed on the Internet Worldwide throughout 2025.
radar.cloudflare.com
December 18, 2025 at 9:40 AM
Reposted by Hannes Ullrich
Übrigens kann man hier auch den Stellenwert des EU Parlaments in der Bevölkerung ablesen. Eigentlich ist das EU Parlament an vielen Stellen wesentlich wirkmächtiger, aber der große diskursive Aufschrei, wie er erfolgte als Merz im Bundestag mit der AfD paktierte, bleibt hier weitgehend aus.
Erneut verwenden die Konservativen im EU-Parlament eine rechte Mehrheit. Die Stimmenkoalition, die von der Leyen ins Amt gebracht hat, existiert eigentlich nicht mehr.
Daheim Brandmauer predigen und in Straßburg mit der noAfD auf das Ruanda-Modell anstoßen...
December 18, 2025 at 6:30 AM
Reposted by Hannes Ullrich
When I was a medical student 45 years ago, I clerked in a 13 year old girl with deep jaundice and an abdominal mass. She was Hepatitis B positive. That had led to a primary liver tumour. In a 13-year-old. She was dead within the month. Avoidable with vaccination.
The CDC has endorsed ACIP’s decision of revoking universal access in USA to hepatitis B vaccines at birth. The policy had been in place for 34y and was changed despite no new evidence emerging of any risk of vaccination. #HealthPolicy 🧵
CDC accepts ACIP’s hepatitis B vaccine recommendations for babies
The CDC also said if a baby is not receiving a birth dose of vaccine, the initial dose should be administered no earlier than 2 months of age.
www.cidrap.umn.edu
December 18, 2025 at 8:14 AM
Reposted by Hannes Ullrich
December 18, 2025 at 8:17 AM
Reposted by Hannes Ullrich
Much of the decline of #manufacturing employment at the industry level in #Germany reflects a shift of manufacturing tasks into service sector firms rather than a disappearance of manufacturing work.
Dominik Boddin & Thilo Kroeger
cepr.org/voxeu/column...
#EconSky
December 17, 2025 at 9:10 AM
Reposted by Hannes Ullrich
Gesundheit, Kriminalität & Bildung - in diesen und vielen anderen Bereichen fehlen in Deutschland Forschungsdaten. @hannesullrich.com, @annabindler.bsky.social & @jaschadraeger.bsky.social berichten, wie sie von ausländischer Forschungsdateninfrastruktur profitiert haben. www.diw.de/de/diw_01.c....
December 16, 2025 at 2:34 PM
Reposted by Hannes Ullrich
We are deeply saddened by the passing of Kate Ho, the John L. Weinberg Professor at Princeton and a Fellow of the Econometric Society. Kate was a brilliant IO economist and scholar whose impact on the profession will resonate for many years to come www.econometricsociety.org/publications...
In Memoriam: Kate Ho - The Econometric Society
We are deeply saddened by the passing of Kate Ho, the John L. Weinberg Professor of Economics and Business...
www.econometricsociety.org
December 11, 2025 at 6:03 PM
Reposted by Hannes Ullrich
My second post about researchers’ rights to scrape data under DSA Article 40.12 is up! This is dense with legal arguments for researchers to use if they get sued. Or to show their lawyers before that.

www.techpolicy.press/how-the-mean...

verfassungsblog.de/dsa-fine-x-r...
How the Meaning of 'Publicly Accessible' Shapes Researcher Data Rights Under the DSA | TechPolicy.Press
Researchers eager to begin work under DSA Article 40(12) may be deterred by uncertainty about what data counts as 'publicly accessible,' writes Daphne Keller.
www.techpolicy.press
December 15, 2025 at 3:36 PM
Reposted by Hannes Ullrich
📣Europeans are speaking loud and clear!

EU citizens see strong benefits from EU membership, and call for a stronger and more assertive EU with reinforced economic independence and a common defence and security policy.

Read more ↓
link.europa.eu/D8krNJ
December 11, 2025 at 1:56 PM
Reposted by Hannes Ullrich
Meta shuts down global accounts linked to abortion advice and queer content

www.theguardian.com/global-devel...
Meta shuts down global accounts linked to abortion advice and queer content
More than 50 organisations report sites being restricted or removed, with abortion hotlines blocked and posts showing non-explicit nudity triggering warnings
www.theguardian.com
December 11, 2025 at 1:29 PM
Very sad news. I have been a big fan of her work and remember meeting her as truly kind and interested in others' work.
The brilliant Kate Ho has passed away.

She was an amazing economist and a genuinely kind human being. Her work shaped how we think about healthcare markets and her generosity touched everyone lucky enough to know her.

The profession and the world are poorer without her.
December 11, 2025 at 12:38 PM