Xiang (Shawn) Zheng
@xzfin21.bsky.social
rookie dad, assistant professor of finance
http://www.xiangzheng.info
http://www.xiangzheng.info
Reposted by Xiang (Shawn) Zheng
The latest NBER Reporter: www.nber.org/reporter?pag...
Featuring N. Gregory Mankiw’s Martin Feldstein Lecture on the US Fiscal Future, and research summaries by:
• Pol Antràs, Teresa C. Fort & Felix Tintelnot
• Niels Gormsen & Kilian Huber
• Amir Kermani & Timothy McQuade
• Manju Puri.
Featuring N. Gregory Mankiw’s Martin Feldstein Lecture on the US Fiscal Future, and research summaries by:
• Pol Antràs, Teresa C. Fort & Felix Tintelnot
• Niels Gormsen & Kilian Huber
• Amir Kermani & Timothy McQuade
• Manju Puri.
The Reporter
N. Gregory Mankiw1
www.nber.org
October 8, 2025 at 6:00 PM
The latest NBER Reporter: www.nber.org/reporter?pag...
Featuring N. Gregory Mankiw’s Martin Feldstein Lecture on the US Fiscal Future, and research summaries by:
• Pol Antràs, Teresa C. Fort & Felix Tintelnot
• Niels Gormsen & Kilian Huber
• Amir Kermani & Timothy McQuade
• Manju Puri.
Featuring N. Gregory Mankiw’s Martin Feldstein Lecture on the US Fiscal Future, and research summaries by:
• Pol Antràs, Teresa C. Fort & Felix Tintelnot
• Niels Gormsen & Kilian Huber
• Amir Kermani & Timothy McQuade
• Manju Puri.
Reposted by Xiang (Shawn) Zheng
Leveraging 30,000 stock predictors and AI to generate 288 finance papers with custom hypotheses, highlighting risks of automated research and HARKing (Hypothesizing After Results are Known) in academia, from Robert Novy-Marx and @VelikovMihail https://www.nber.org/papers/w33363
January 22, 2025 at 8:30 PM
Leveraging 30,000 stock predictors and AI to generate 288 finance papers with custom hypotheses, highlighting risks of automated research and HARKing (Hypothesizing After Results are Known) in academia, from Robert Novy-Marx and @VelikovMihail https://www.nber.org/papers/w33363
Reposted by Xiang (Shawn) Zheng
Banks strategically use venture investments in fintech startups to navigate competition. Banks target fintechs with complementary assets, leading to more operational collaborations, from Manju Puri, Yiming Qian, and Xiang Zheng https://www.nber.org/papers/w33297
December 28, 2024 at 8:00 PM
Banks strategically use venture investments in fintech startups to navigate competition. Banks target fintechs with complementary assets, leading to more operational collaborations, from Manju Puri, Yiming Qian, and Xiang Zheng https://www.nber.org/papers/w33297
Reposted by Xiang (Shawn) Zheng
Just a reminder that @gmcd.bsky.social and @kylefbutts.bsky.social have made an incredible public good describing how to use data.table and fixest to encourage moving from Stata to R!
stata2r.github.io
stata2r.github.io
Translating Stata to R
Learning R coming from Stata
stata2r.github.io
December 4, 2024 at 12:14 AM
Just a reminder that @gmcd.bsky.social and @kylefbutts.bsky.social have made an incredible public good describing how to use data.table and fixest to encourage moving from Stata to R!
stata2r.github.io
stata2r.github.io
Bought mine. Look forward to it!
2025 ECON5k starts December 1! Details are here sites.google.com/view/econ5k, including how to get a t-shirt and how to upload your results.
Please also feel free to post your results on BlueSky with the hashtag #ECON5k!
Please also feel free to post your results on BlueSky with the hashtag #ECON5k!
Home
Economists running
@econ5k.bsky.social
the.econ5k@gmail.com
sites.google.com
December 1, 2024 at 1:04 PM
Bought mine. Look forward to it!
Reposted by Xiang (Shawn) Zheng
Economists love using linear regression to estimate treatment effects — it turns out that there are perils to this method, but also amazing perks
Come with me in this 🧵 if you want to learn about our now-published paper "Contamination Bias in Linear Regressions!"
1/ (Twitter rerun!)
Come with me in this 🧵 if you want to learn about our now-published paper "Contamination Bias in Linear Regressions!"
1/ (Twitter rerun!)
The December 2024 issue of the American Economic Review (114, 12) is now available online at aeaweb.org/issues/785.
American Economic Review
Vol. 114 No. 12 December 2024
aeaweb.org
November 30, 2024 at 12:29 PM
Economists love using linear regression to estimate treatment effects — it turns out that there are perils to this method, but also amazing perks
Come with me in this 🧵 if you want to learn about our now-published paper "Contamination Bias in Linear Regressions!"
1/ (Twitter rerun!)
Come with me in this 🧵 if you want to learn about our now-published paper "Contamination Bias in Linear Regressions!"
1/ (Twitter rerun!)
Reposted by Xiang (Shawn) Zheng
We've created a starter pack for all of the economics journals on Bluesky. Please nominate other journals to join the list.
go.bsky.app/4kR21vX
go.bsky.app/4kR21vX
November 27, 2024 at 2:44 PM
We've created a starter pack for all of the economics journals on Bluesky. Please nominate other journals to join the list.
go.bsky.app/4kR21vX
go.bsky.app/4kR21vX
Reposted by Xiang (Shawn) Zheng
If you want to download the 1990-2023 county-level Census Building Permits data...
(I'll probably have a blog post about this at some point)
h/t @kjhealy.co for the `rvest` code
(I'll probably have a blog post about this at some point)
h/t @kjhealy.co for the `rvest` code
R code to import all years of county-level building permit data and lightly clean
R code to import all years of county-level building permit data and lightly clean - permits-import.r
gist.github.com
November 25, 2024 at 7:08 PM
If you want to download the 1990-2023 county-level Census Building Permits data...
(I'll probably have a blog post about this at some point)
h/t @kjhealy.co for the `rvest` code
(I'll probably have a blog post about this at some point)
h/t @kjhealy.co for the `rvest` code
Reposted by Xiang (Shawn) Zheng
There are, very roughly, something like 70-80 nonstop flights each day from NYC airports to DC or Boston.
If we had HSR, many of those flights could be rail trips instead.
This in turn would open up many slots for flights elsewhere, adding overall tourist flows.
If we had HSR, many of those flights could be rail trips instead.
This in turn would open up many slots for flights elsewhere, adding overall tourist flows.
November 22, 2024 at 8:13 PM
There are, very roughly, something like 70-80 nonstop flights each day from NYC airports to DC or Boston.
If we had HSR, many of those flights could be rail trips instead.
This in turn would open up many slots for flights elsewhere, adding overall tourist flows.
If we had HSR, many of those flights could be rail trips instead.
This in turn would open up many slots for flights elsewhere, adding overall tourist flows.
Reposted by Xiang (Shawn) Zheng
Low-income students have been a ridiculously tiny share of elite college enrollment for a century
November 18, 2024 at 12:52 PM
Low-income students have been a ridiculously tiny share of elite college enrollment for a century
Reposted by Xiang (Shawn) Zheng
Does anyone know a source for recent data on average GPA by University? #EconSky
Best I could find is gradeinflation.com whose data ends in 2016.
Best I could find is gradeinflation.com whose data ends in 2016.
National Trends in Grade Inflation, American Colleges and Universities
gradeinflation.com
November 22, 2024 at 10:17 PM
Does anyone know a source for recent data on average GPA by University? #EconSky
Best I could find is gradeinflation.com whose data ends in 2016.
Best I could find is gradeinflation.com whose data ends in 2016.
Reposted by Xiang (Shawn) Zheng
The appreciation in for-profit prison stocks post-election is breathtaking: GEO up 80%; Corecivic up 60%. It's worth noting the same thing happened in 2016, but by 2020 they were back down to where they started...
November 22, 2024 at 11:36 AM
The appreciation in for-profit prison stocks post-election is breathtaking: GEO up 80%; Corecivic up 60%. It's worth noting the same thing happened in 2016, but by 2020 they were back down to where they started...
10th UConn Finance Conference on May 23, 2025. We pay for two nights’ stay for presenters and discussants. finance.business.uconn.edu/finance-conf...
Call For Papers | Finance Department
10th Annual University of Connecticut Finance Conference Friday, May 23, 2025 UConn School of Business Storrs, CT The finance faculty at the Universi ...
finance.business.uconn.edu
November 21, 2024 at 7:19 PM
10th UConn Finance Conference on May 23, 2025. We pay for two nights’ stay for presenters and discussants. finance.business.uconn.edu/finance-conf...