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Florian Ederer Profile picture
Florian Ederer
@florianederer
Austrian 🇦🇹 Economist 📈 But definitely not an Austrian economist! @nberpubs | @ecgiorg | @cepr_org | @BUQuestrom
Dec 11, 2023 • 8 tweets • 4 min read
🏭🎩💵
@BPellegrino_CBS and I just finished a revision of our paper on the economy-wide welfare costs & distributional effects of #CommonOwnership.

TL;DR
We estimate that the deadweight loss of common ownership has increased to between 3.5% and 13.2% of total surplus.
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Image We develop a general equilibrium model in which granular firms compete in a network game of oligopolistic competition.

Firms are connected through 2 large networks: product similarity (left) and investor holdings (right). Image
Oct 25, 2023 • 9 tweets • 5 min read
You've seen the live performance.
You've seen the slides.
And maybe you've even seen the leaked rough cut that circulated online.

So here it is at last:
"Anonymity and Identity Online (Taylor's Version)"

florianederer.github.io/ejmr.pdf
Image Using newly developed GPU-based software and the uniformity property of the SHA-1 hash we recover 47,630 distinct IP addresses of EJMR posters.

We attribute them to 67.9% of the 6.91 million EJMR posts with 4-digit hexadecimal usernames from the past 12 years.
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Dec 11, 2022 • 4 tweets • 3 min read
How do you know you've really made it? It's when you get to discuss CONCACAF soccer on your favorite podcast (with special mentions of research by @FilipeCampante
and @AlexKrumer). ballverliebt.eu/2022/12/11/wm-… There is one small addendum to my @ballverliebteu commentary about the USMNT at the World Cup and it's the explanation for why we didn't see more of Gio Reyna.
theathletic.com/3991695/2022/1…
Sep 18, 2022 • 22 tweets • 18 min read
Economics Journals as Tennis Tournaments
🧵(for an extremely niche audience)

Quarterly Journal of Economics = Wimbledon

The oldest and most influential event, but also clubby, snobby, and elitist. To win it you must train on a very particular surface/ZIP code. American Economic Review = US Open

Event based in the US that caters to all tastes and play styles in the profession. Draws the biggest crowds/readership.
Sep 2, 2022 • 6 tweets • 2 min read
I really should be working on those REStud revisions or the 3 different discussions or the referee reports, but I just can't resist going to Target for some gift cards. Image And now it gets interesting Image
Jun 3, 2022 • 9 tweets • 4 min read
I'm sometimes sad that not enough of my MBA students have seen The Wire and that campus climate has changed so much that in order to demonstrate fundamental concepts of Competitive Strategy it is no longer optimal to show clips of this masterpiece in class.

A short thread:
🧵👇 Stringer Bell on the (quality/speed) elasticity of demand
May 15, 2022 • 8 tweets • 6 min read
The 20th Annual @IIOC_IO conference was a blast! There were so many interesting papers across the whole range of industrial organization topics.
editorialexpress.com/conference/IIO…

Here are a few of my favorites (with an obvious innovation bias):
🧵 "Colluding Against Environmental Regulation" by Alé-Chilet, Chen, Li & Reynaert

BMW, Daimler & Volkswagen colluded to reduce the size of NOx emission reduction tanks. Collusion drastically increased pollution and lowered welfare by €4+ billion.

editorialexpress.com/cgi-bin/confer… Image
Nov 11, 2021 • 10 tweets • 4 min read
Discovering the classics Coconut Pete in the house
Oct 22, 2021 • 6 tweets • 4 min read
Almost everything worth reading in economics is covered at length in grad level textbooks.

Nobody learns calculus by reading De analysi per aequationes numero terminorum infinitas.

If you want to read original classic texts there's a discipline for you: comparative literature. The exceptions are, of course, forgotten ideas that later become relevant again, but I can assure you that they're not to be found by you personally trying to figure out "what Hayek/Mises/Keynes/Ricardo/Friedman/Marx/Smith REALLY meant."
Jan 18, 2021 • 8 tweets • 5 min read
Backus, @conlon_chris & @MSinkinson have a fabulous new paper on #CommonOwnership.

Following a rich intellectual history from Bresnahan (1982) to @steventberry-@PhilHaile (2014) it proposes a new test to discriminate between models of firm conduct.

drive.google.com/file/d/14gqPUu… You may recall that the same set of authors also recently published an excellent paper in AEJ: Micro which documents the stunning increase in common ownership profit weights in the S&P 500 over the last few decades.
chrisconlon.github.io/site/common_ow…