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Matt Pierson

@matthewcpierson

Researching tax avoidance, illicit flows, and their effects on household and public finance. | WRDS, UPenn | Otherwise: all things data.

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Latest posts by Matt Pierson @matthewcpierson

Amazing, no notes

07.03.2026 16:49 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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When I worked at the Chicago Fed, we became interested in a unique quirk of insurance accounting: states can issue insurers "permitted practice" accounting exceptions. They're relatively uncommon but acan occasionally be quite significant. Our writeup is out: link.springer.com/epdf/10.1057...

06.03.2026 17:40 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

If you want examples of this, being at my group/institution combo is THE DGP for this, especially in mixed finance/econ settings

06.03.2026 13:54 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Think it’s more operating under the assumption that β€œif network so good why so junior” which is calculus made with a CV lag

06.03.2026 13:52 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Choosing to believe non-cash charitable contributions made the list because of the immense popularity of my work (and not the impetus for its existence at all)

06.03.2026 04:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Or maybe that underestimates agency problems. Either way, protectionism (tariffs) for manufacturing with no comp. advantage; free markets (no tenure) for higher ed, significant export

05.03.2026 18:54 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

While awful on its own, also see states doing this and think, wow, the ideas of economics have really failed to reach politicians

05.03.2026 18:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

With very large numbers of n’s you don’t need randomization, and with LLM’s we can generate very large numbers of n’s, so I think all of science is solved by now. I don’t see any problems with this.

03.03.2026 23:27 πŸ‘ 96 πŸ” 18 πŸ’¬ 5 πŸ“Œ 1

It was either that, the combo NY invented y'all/in the South y'all is a religion, or George O'Leary put Y'all Inventor on his resume

But regardless I am everyone's favorite messenger

03.03.2026 20:16 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Because Norwood Teague invented y’all in 1705, by trying to mimic the calls of a murder of crows to his crew aboard the Edmund Fitzgerald

03.03.2026 15:25 πŸ‘ 9 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

she seems nice?

I shudder to think if the STEM-mance genre turns to econ

24.02.2026 15:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Don’t give Ali Hazelwood ideas

24.02.2026 13:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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The impact of Trump's attacks on the IRS, in two charts.

From my latest for @economist.com.

www.economist.com/finance-and...

17.02.2026 16:32 πŸ‘ 88 πŸ” 40 πŸ’¬ 0 πŸ“Œ 2

Think they all mainly converge to a similar place, IME

23.02.2026 17:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

...I could go on quite a long rant about modern fiction, though, as someone who went decently far down that path before realizing how fraught it was

23.02.2026 14:14 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

@maroonhog.bsky.social 's bookstagram/booktok not entirely off either w/r/t trends and copycats. have found romance/fantasy romance to have much more freedom than literary fiction these days. STEM/hockey/fae/etc trends were started by *something* original, and there is great work despite copycats

23.02.2026 14:11 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Few different things: Aspiring writers have a distinct MFA pipeline, and when you write from experience... Publishing process also tends to homogenize because new things break the formula of what sells. Added bit that "fiction", both highbrow and not, has become gendered in the U.S. as well

23.02.2026 14:08 πŸ‘ 2 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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A tariff β€œrefund” mostly goes to whoever wrote the tariff check: the importer of record. That’s not the same person who paid more at the register. So refunds -- if they're offered -- might sound like consumer relief, but in reality, they're corporate windfalls.

21.02.2026 17:46 πŸ‘ 12458 πŸ” 5013 πŸ’¬ 772 πŸ“Œ 473

But that pits people against Tara Lipinski, which I cannot do

21.02.2026 16:15 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Team "Elsevier Highlights Subversion" strikes again! Best one yet!
@deankarlan.bsky.social, Monica Lambon-Quayefio, Utsav Manjeer, @christopher-udry.bsky.social

18.02.2026 21:48 πŸ‘ 36 πŸ” 16 πŸ’¬ 1 πŸ“Œ 0
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Professor Brian Galle on taxing the ultrarich He just published a book outlining a plan for fairer taxation at the federal level and is involved with an effort to put a billionaire tax on the ballot in California.

Check out β€˜Voices Carry’: Professor Brian Galle (@bdgesq.bsky.social) on Taxing the Ultrarich, in California and at the Federal Level www.law.berkeley.edu/article/prof... Host @gwyneth.bsky.social #CABillionaireTax

18.02.2026 19:28 πŸ‘ 4 πŸ” 5 πŸ’¬ 0 πŸ“Œ 1

Big org problems remain undefeated

18.02.2026 16:27 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Oh man, there was a Wharton slack war over this one. Started from an ex post β€œmaybe we should have invested in our own platforms rather than 100% enterprise SaaS that has host of attack surfaces, breaks constantly, doesn’t interface well”

Which is true! But most places got here by boiling that frog

18.02.2026 15:27 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Bank probe reveals Adani associates’ secret investments [FREE TO READ] People close to Indian conglomerate accused of market manipulation held billions of dollars’ worth of shares

Internal bank documents show the scale of secret shareholdings in India’s Adani, at the very moment Hindenburg accused it of β€œbrazen market manipulation”

An FT and OCCRP collab.

as.ft.com/r/eb906e00-d...

17.02.2026 08:33 πŸ‘ 36 πŸ” 10 πŸ’¬ 2 πŸ“Œ 3

I made char siu bao last night on the suggestion of Graas.

It was…not a family hit. So I had 4 for lunch as leftovers and I’ll have 4 tomorrow too

14.02.2026 23:16 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Oh that was an excited post not a question. I miss certain parts of Tally and Kool Beanz is one (though pretty sure it shut down even while we were there)

14.02.2026 11:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Kool Beanz!!!

14.02.2026 04:24 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

"Floridians are going to be paying for the relief. You're not getting savings out of nothing. You're paying for those savings by cutting services or by paying higher fees or by paying more taxes."

-FPI's Esteban Santis on how HJR 201 would impact Floridians [Via @wusf.org]

13.02.2026 17:19 πŸ‘ 4 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0