Ulrich Kaiser
@ulrichkaiser.bsky.social
Prof. of Entrepreneurship @UZH_en
& @CBScph, research fellow @ZEW
and @IZA_bonn.
@IEP_Journal editor
Zürich🇨🇭Stäfa🇨🇭Dejret🇩🇰
https://t.co/T2sAPe5yGy
Economics
61%
Business
31%
📣📣📣WE ARE HIRING AT UNI ZURICH📣📣📣
Want to work in a super attractive environment and you are an #innovation scholar?
⏩ Apply here: jobs.uzh.ch/job-vacancie....
(pic taken frommy office)
Want to work in a super attractive environment and you are an #innovation scholar?
⏩ Apply here: jobs.uzh.ch/job-vacancie....
(pic taken frommy office)
Reposted by Yana van der Meulen Rodgers, Ulrich Kaiser
ECON5k
@econ5k.bsky.social
· Nov 10
Home
Economists running
@econ5k.bsky.social
the.econ5k@gmail.com
sites.google.com
2025 #ECON5k is coming! Updated website here: sites.google.com/view/econ5k. Details+link to t-shirts. 5 colors this year!
Follow this account for more details + running celebration December + info about group runs at the meetings in SF!
+Contact the.econ5k@gmail.com to be added to email list.
Follow this account for more details + running celebration December + info about group runs at the meetings in SF!
+Contact the.econ5k@gmail.com to be added to email list.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 25
Ulrich Kaiser on LinkedIn: #zurich #basel #appenzell #jura #neuchatel #nidwalden #obwalden #saint…
♀️♀️♀️EPISODE 2♀️♀️♀️
of
🇨🇭🇨🇭🇨🇭 WOMEN STARTUPS AND WHERE TO FIND THEM 🇨🇭🇨🇭🇨🇭
In our last episode (https://lnkd.in/d5C7vHn9) we discussed where…
www.linkedin.com
Check here: www.linkedin.com/feed/update/...
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 25
♀️♀️♀️EPISODE 2♀️♀️♀️
of
🇨🇭🇨🇭 WOMEN STARTUPS AND WHERE TO FIND THEM 🇨🇭🇨🇭
In our last episode (lnkd.in/d5C7vHn9) we discussed where to find ♀️ startups (relative to ♂️ startups) in general so the next question to be answered is:
WHERE DO WE FIND WOMEN GROWTH-ORIENTED VS WOMEN NON GROWTH-ORIENTED STARTUPS?
of
🇨🇭🇨🇭 WOMEN STARTUPS AND WHERE TO FIND THEM 🇨🇭🇨🇭
In our last episode (lnkd.in/d5C7vHn9) we discussed where to find ♀️ startups (relative to ♂️ startups) in general so the next question to be answered is:
WHERE DO WE FIND WOMEN GROWTH-ORIENTED VS WOMEN NON GROWTH-ORIENTED STARTUPS?
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 24
if such terms were unavailable, via Gender API (in combination with information of the country of origin). Manuel Bolz provided superb research assistence.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 24
Our data starts in March 2016 and ends December 2023. The figures shown are averaged across Swiss municipalities. We identified founders as female vs mal via gendered terms such as Staatsbürgerin (female citizen in German) and,
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 24
Where's the data from? We downloaded it via the Zefix API in cooperation with Chiron Services and with financial support by Swiss National Science Foundation SNSF as well as Innosuisse.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 24
The ratio of women to men startups is 0.322 (i.e., for three men startups there is one women startup) across municipalities, similar to basically all other countries we tend to compare us with.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 24
So, where to find them? Mostly in the cantons of Basel city and Zurich but rarely in Appenzell-Innerhoden, Schaffhausen or Neuchatel. They are also more likely to be found in rural and "intermediate" areas than in cities (which offer better options in dependent employment).
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 24
♀️♀️♀️ 🇨🇭🇨🇭🇨🇭 Women Startups and Where to Find Them 🇨🇭🇨🇭🇨🇭♀️♀️♀️:
Well, what is a "women startup" in the first place? It's a new business registration on the Swiss Business Register (www.zefix.ch) which has more women founders than men founders.
Well, what is a "women startup" in the first place? It's a new business registration on the Swiss Business Register (www.zefix.ch) which has more women founders than men founders.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 19
Jetzt wirds knapp.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
Ruf mal beim Gemeindeamt Deines letzten Wohnsitzes an. Das hat bei uns geklappt.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
At the same time, the journey was also super rewarding, we got really good comments from reviewers and editors, and I am really proud of this very elegant paper that I think is both relevant and rigorous.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
It's been a very long journey. It's been so long that two new kids arrived in the meantime (not in my household). And a pandemic. And my hair turned grey, at least the bit that remained.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
For instance, we were able to proxy investment in customer retention that is usually difficult to measure, via the number of game updates.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
This brought a new and very amazing coauthor, Reinhold Kesler (now Düsseldorf Institute for Competition Economics (DICE)) who pushed the empirical part to a very high level.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
The model derives empirically testable hypotheses that we... do no longer test using German magazine data. We use a nowadays much more relevant market instead, online games.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
The beauty of the model is that it cannot only explain phenomena observable in the real world, but it also arrives at conclusions that off-the shelf theory would not arrive at. E.g., the mapping between market value and product variety is inverted u-shaped.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
The model shows that both variables are substitutes. The mechanism here is that a firm can keep its existing consumers by investment in customer retention but can also attract switching consumers from rivals by a larger portfolio size.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
Standard micro theory can't really explain this phenomenon.
Markus got back to me from Regensburg a few weeks later with a sketch of a theoretical model that featured the interplay between investing in portfolio size and investing in consumer retention.
Markus got back to me from Regensburg a few weeks later with a sketch of a theoretical model that featured the interplay between investing in portfolio size and investing in consumer retention.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
It all started with the question "Why do so many magazine publishers have multiple titles in the exact same segment?" (yes, magazine, it was 20169 that I asked one of my absolute favorite applied micro theorists, Markus Reisinger of Frankfurt School of Finance & Management.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
It all started at a meeting of the Industrial Economics field committee of the Verein für Socialpolitik e.V. meeting in Regensburg back in 2016 (superbly organized by Andreas Roider).
And it's now accepted for publication in
Management Science.
And it's now accepted for publication in
Management Science.
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Feb 15
(S+) Zum Tod von Gerhart Baum: Der letzte aufrechte Liberale
Der frühere Bundesinnenminister Gerhart Baum ist tot. Er war aktiv und mischte sich bis ins hohe Alter ein. Und er litt bis zuletzt an seiner FDP.
www.spiegel.de
Wegen Gerhard Baum bin ich 1989 in FDP eingetreten.
Wegen Guido Westerwelle (im Nachhinein ein Guter) 2006 wieder ausgetreten.
www.spiegel.de/politik/deut...
Wegen Guido Westerwelle (im Nachhinein ein Guter) 2006 wieder ausgetreten.
www.spiegel.de/politik/deut...
Vielleicht müssen wir dann auch alle um 5 Uhr aufstehen, gerade wir faulen Städter.
Reposted by Ulrich Kaiser
The official portal for European data | data.europa.eu
Discover the single point of access to open data from European countries, EU institutions, agencies and bodies and other European countries.
data.europa.eu
Das Delta zwischen Besuchenden (in unserem Katalog) und Downloads zeigt schön, wie wichtig Multiplikatoren wie data.europa.eu sind. Und wie unnötig Kantonsgrenzen für Daten sind.
Full disclosure: no, Franziska and I do *not* share a common family heritage. She is, however, a member of my academic family heritage - she was supervised by Christian Peukert, who was a post-doc at the chair many years ago.
There is a new Kaiser in the house, and it is Franziska Kaiser, our new post-doctoral student who is joining us from HEC Lausanne.
Welcome Franziska!
Welcome Franziska!
Thanks to Christian Ehring and Rheinische Post, I've had my four seconds of fame this morning.
Pedro H. C. Sant’Anna
psantanna.com
I've decided to collect my DiD materials in a single place.
psantanna.com/did-resources
There, you will find
- 14 lectures of my comprehensive DiD course
- Shorter lectures/talks I have given on DiD
- My DiD R/Stata/Python packages
- Some DiD checklists
- DiD materials from my friends
Enjoy!
psantanna.com/did-resources
There, you will find
- 14 lectures of my comprehensive DiD course
- Shorter lectures/talks I have given on DiD
- My DiD R/Stata/Python packages
- Some DiD checklists
- DiD materials from my friends
Enjoy!
Ulrich Kaiser
@ulrichkaiser.bsky.social
· Dec 30
Here are the first five sets of slides:
01 Introduction: psantanna.com/DiD/01_Intro...
02 Classical 2x2 setup: psantanna.com/DiD/02_two_b...
03 Clustering issues: psantanna.com/DiD/03_Clust...
04 Functional form: psantanna.com/DiD/04_Funct...
05 Covariates: psantanna.com/DiD/05_Covar...
01 Introduction: psantanna.com/DiD/01_Intro...
02 Classical 2x2 setup: psantanna.com/DiD/02_two_b...
03 Clustering issues: psantanna.com/DiD/03_Clust...
04 Functional form: psantanna.com/DiD/04_Funct...
05 Covariates: psantanna.com/DiD/05_Covar...
Great stuff: