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Sergio Ocampo

@socampdi.bsky.social
1.1K followers 677 following 62 posts

Econ Assistant Professor working on wealth inequality and macroeconomics University of Western Ontario Colombian 🇨🇴 + UMN PHD sites.google.com/site/sergiocampod

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Reposted by Sergio Ocampo
CESifo @cesifo.org · 23/07/2026
New Paper Alert📢 "Taxing Wealth Unlocks Capital Gains: An Efficiency Rationale for Wealth Taxes " by @socampdi.bsky.social, Guttorm Schjelderup & Floris Zoutman Find out how wealth taxation can unlock capital, eliminating the distortion on investors’ portfolio choice!💰 🔗 www.ifo.de/en/cesifo/pu...
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
Mechanism relies on taxing historical value of wealth carried into each period (as in 🇳🇴!) ➡️ No real-time valuation of gains and no double taxation of capital gains Results extend to partial asset sales and stochastic returns. Comments welcomed! 🔗 ssrn.com/abstract=712...
ssrn.com
Taxing Wealth Unlocks Capital Gains: An Efficiency Rationale for Wealth Taxes
Realization-based capital income taxation generates capital lock-in because investors have an incentive to delay tax payments. This generates inefficiency as in
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
Tax design matters❗️ Historical and book value taxes work; market-value taxes don't❗️ Market value wealth tax combines 1️⃣ Tax on historical wealth 2️⃣ Tax on accrued capital gains➡️Double taxation
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
What sufficient statistic determines opt. tax mix❓🔑: Cross-response of the capital-income tax base to the wealth tax: Does a higher wealth tax unlock realizations and expand taxable capital income? This works in addition to the standard own-elasticity of taxable wealth
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
Separate margin from other wealth tax effects: 🔄 “Use It or Lose It”: wealth shifts toward high-return entrepreneurs 💡 “Book-Value Wealth Taxation and Innovation”: greater return dispersion strengthens innovation Common force: wealth taxes reshape after-tax returns.
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
This gives an efficiency rationale for wealth taxation independent of inequality: A revenue-neutral shift from capital-income to wealth taxation improves portfolio allocation—even though both taxes discourage saving. This works separate from any reallocation motives for the wealth tax
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
The wealth tax τₐ* = (1−τₖ)r pushes the reservation return back toward the market return ➡️ unlocks capital. For a 35% capital-income tax and a 2.5% market return, a wealth tax of ≈1.6% eliminates lock-in.
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
Why does a wealth tax undo lock-in? 1⃣ Deferring capital taxes increases future wealth taxes 2⃣Wealth tax lowers after-tax market return: r̃=(1−τₖ)r−τₐ Lower r̃ makes delaying gains less valuable. When r̃=0, deferral has no tax advantage➡️efficient cutoff is restored.
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
Capital-income taxation lowers return cutoff below market return ➡️ Capital lock-in Investors keep low-return assets to defer taxes. Taxing unrealized gains pushes the cutoff above the market return ➡️ Capital lock-out
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
The deferral decision satisfies a reservation rule on returns 📉 Sell when the asset’s future return is below the cutoff📈 Hold when it is above Without taxes➡️Cutoff equals the market return. Investors sell exactly when the market offers a better return.
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
Capital gains taxes can be deferred if gains are unrealized: Selling asset triggers tax on embedded capital gain. Investors may keep assets to postpone taxes even when other investments offer higher return. Privately optimal deferral ➡️ Inefficient allocation of capital.
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Sergio Ocampo @socampdi.bsky.social · 22/07/2026
Can wealth taxes make capital markets more efficient❓ Realization-based capital-gains taxes can lock investors into low-return assets We show a properly designed wealth tax unlocks capital New paper w/Guttorm Schjelderup & Floris Zoutman @nhhecon.bsky.social @cesifo.org: ssrn.com/abstract=712...
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
How can we account for inequality when measuring economic mobility❓ Many mobility measures focus on rank changes across generations or time. But ranks only capture relative positions regardless of income/wealth differences. New paper w/ @mcgeeconomics.bsky.social: ifs.org.uk/publications...
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Rory McGee @mcgeeconomics.bsky.social · 24/02/2026
Nice thread by my coauthor @socampdi.bsky.social on a short paper connecting mobility and inequality measurement
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
We believe this gives an easy to implement tool for measuring mobility when inequality matters and formalizes the link between measurement of inequality and mobility. All comments welcomed! 🔗https://ifs.org.uk/publications/beyond-ranks-inequality-measurement-mobility
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
🇳🇴 Mobility: • Among women → mobility is mostly horizontal (inequality stable) • Among men → falling inequality generates meaningful vertical mobility
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
🇺🇸 Mobility: • Lorenz mobility < Rank mobility: inequality matters • Aggregate mobility mostly reflects horizontal mobility • Vertical mobility is slightly negative because inequality rose between generations
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
Application: Intergenerational mobility in 🇺🇸 and 🇳🇴 Lorenz mobility uses the same data as rank mobility. It also allows: • Net mobility from cross-sectional data (no panel!) • Status-based IGE & rank-rank equivalents
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
Net mobility across generations equals the change in the (generalized) Gini coefficient ➡️ When inequality falls, net status mobility rises. Horizontal mobility is zero-sum in the aggregate (rank switches) ➡️ Net mobility corresponds to vertical mobility (change in Gini!)
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
Connecting mobility and inequality: A reduction in inequality (say from Pigou-Dalton transfers) shifts the Lorenz curve up ➡️ increases vertical mobility!
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
Lorenz mobility decomposes naturally into: 🔄 Horizontal mobility — rank changes holding inequality fixed (moving along the same Lorenz curve) 📈 Vertical mobility — inequality changes holding rank fixed (shifting between Lorenz curves)
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
We show Lorenz ordinates can be axiomatized as aspirational status: Status rises when your income gets closer to those richer than you, linking inequality and mobility as status depends on the shape of the income distribution. We then study the properties of "Lorenz Mobility"
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
We argue changes in Lorenz ordinates—positions in Lorenz curve—are an informative mobility measure in unequal economies. A Lorenz ordinate (income share below you) combines: 🔢 Rank (ordinal position) 💰 Income differences (cardinal information)
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
The problem with rank-based mobility in *unequal* societies: Large rank changes mean little at the bottom of the distribution, while small rank changes at the top represent large material differences. The Lorenz Curve captures these differences from inequality❗️
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Sergio Ocampo @socampdi.bsky.social · 24/02/2026
How can we account for inequality when measuring economic mobility❓ Many mobility measures focus on rank changes across generations or time. But ranks only capture relative positions regardless of income/wealth differences. New paper w/ @mcgeeconomics.bsky.social: ifs.org.uk/publications...
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Sergio Ocampo @socampdi.bsky.social · 08/10/2025
Learn about our department 🔗https://economics.uwo.ca/people/faculty/tenure.html
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Sergio Ocampo @socampdi.bsky.social · 08/10/2025
🚨We are Hiring at the University of Western Ontario🚨 We have 3️⃣ tenure-track positions: •2 Open-Field •1 linked to our Masters in Financial Economics (open to various fields) Come work with us in 🇨🇦! Share with your students! 📄 Open-Field uwo.ca/facultyrelat... 📄 MFE Position uwo.ca/facultyrelat...
uwo.ca
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Sergio Ocampo @socampdi.bsky.social · 23/09/2025
We are hosting the Canadian Macroeconomics Study Group at @westernu.ca! This year's keynote is Kjetil Storesletten @hellerhurwicz.bsky.social Program 👉 baxter-robinson.github.io/CMSG2025_Pro... Registration is 100 CAD (70 for students!) 🔗https://economics.uwo.ca/about-us/workshops/index.html
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Tim Kehoe 🇺🇸🇨🇦🇲🇽🇺🇦 @tkehoe.bsky.social · 23/08/2025
New study compares economic experiences of China and Mexico after they opened to international trade and foreign investment by Xing Xu, PhD student at UMN Econ ‪ @umn-econ.bsky.social‬ and research analyst at Minneapolis Fed @minneapolisfed.bsky.social and me: www.minneapolisfed.org/research/sta...
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Review of Economics and Statistics (REStat) @restatjournal.bsky.social · 18/08/2025
Monetary policy shocks affect more cities with low income per capita, both in prices and income. Just Accepted new paper by Juan Herreño @juanherreno.bsky.social‬ and Mathieu Pedemonte @mathpedemonte.bsky.social‬ zurl.co/njzAc
juanherreno.bsky.social
403 Forbidden
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Barbara Biasi @barbarabiasi.com · 26/06/2025
Hello #econtwitter community: if any of you has been teaching any of my papers, would you mind shooting me a DM? I would hugely appreciate that 🙏 and thanks in advance!
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Dominic Smith @dominicsmith.bsky.social · 25/07/2025
Tomorrow I will be finishing a 321 mile bike ride from Cleveland to Cincinnati to raise money for Gigi's Playhouse Cleveland in memory of my Aunt, Amy Jo Smith. Amy died in March and Gigi’s Playhouse was her second home since they moved in nearby. support.gigisplayhouse.org/gigifit-acce...
Me holding a bike and screaming with strava text showing a completed 124 mile ride for day 2 of my bike ride.
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Dominic Smith @dominicsmith.bsky.social · 16/07/2025
Next week I will be biking 321 miles from Cleveland to Cincinnati in memory of my Aunt Amy Jo. I am raising money for a nonprofit that supports people with Down Syndrome that was incredibly helpful to my Aunt. support.gigisplayhouse.org/gigifit-acce...
support.gigisplayhouse.org
GiGiFIT Acceptance Challenge 2025 - 321, Go for Amy Jo: Ride Across Ohio for Acceptance
This July I am riding 321 miles from Cleveland to Cincinnati with 2 other people to raise money for Gigi's Playhouse Cleveland in memory of my Aunt, Amy Jo Smith. Biking and Amy: Two of Amy's great...
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Ben Waber @bwaber.bsky.social · 16/07/2025
Next was a pair of talks by Hugo Lhuillier (local root of wage inequality) and @socampdi.bsky.social (modeling wealth inequality) at @nber.org www.youtube.com/live/AUIIyL-... (3/6)
youtube.com
Inequality and Macroeconomics
YouTube video by NBER
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Notre Dame Economics @ndecon.bsky.social · 09/07/2025
Former graduate student Carlos Rondon Moreno and our colleague Christiane Baumeister catching up at a Central Bank of Chile conference:
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Tim Kehoe 🇺🇸🇨🇦🇲🇽🇺🇦 @tkehoe.bsky.social · 21/06/2025
“Artificial Intelligence and Learning the Macroeconomy: Workshop in Honor of Albert Marcet,” BSE Summer Forum, 19-20 June 2025.
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Aaron Sojourner @aaronsojourner.org · 13/06/2025
Welcome, @umn-econ.bsky.social! Great to have you posting on here. #EconSky
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NPR @npr.org · 13/06/2025
Copenhagen is expected to receive 30% more rainfall by the end of the century. The city is responding with a massive long-term adaptation plan. n.pr/4dYZOvs
n.pr
Copenhagen is adapting to a warmer world with rain tunnels and 'sponge parks'
Copenhagen is expected to receive 30% more rainfall by the end of the century. The city is responding with a massive long-term adaptation plan.
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UMN Economics @umn-econ.bsky.social · 02/06/2025
Professor VV Chari in the @startribune.com on the legislation that recently passed the U.S. House: “We’re now out of the pandemic. This is a time for us to pursue perhaps a more responsible fiscal policy, but we seem to be going in exactly the wrong direction.” www.startribune.com/the-fiscal-i...
startribune.com
The fiscal impact of the bill will be big, but it won’t be beautiful
Trillions estimated to be added to a federal debt that’s already unsustainable.
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Joshua Goodman @joshua-goodman.com · 11/06/2025
Re-upping my advice about how to write a good title and abstract for an academic paper, appropriately called: "How to Write a Title and Abstract" Feel free to share this thread, which will focus on titles. #EconSky #AcademicSky
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derek guy @dieworkwear.bsky.social · 11/06/2025
Not true. I see you're a luxury watch dealer. I'm also interested in watches. Let me show you how free and easy migration has allowed you to earn a living. 🧵
Corey Wiley on Twitter writes: "You don’t get it. 
Foundational immigration law is morally just and has been established over millennia. Disrespecting these rules and ideals is very offensive to folks who highly value civilized society"
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Emily✨ @emilyoram.bsky.social · 11/06/2025
This is incredible
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Sergio Ocampo @socampdi.bsky.social · 11/06/2025
What a nice read! Thanks!
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Roxana Hadadi @roxana-hadadi.bsky.social · 11/06/2025
from me!
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AEA Journals @aeajournals.bsky.social · 11/06/2025
Forthcoming in AEJ: Applied Economics: "Rising Concentration of Household Shopping, Superstar Firms, and Implications for Retail Markups" by Justin H. Leung and Zhonglin Li. www.aeaweb.org/articles?id=...
aeaweb.org
Rising Concentration of Household Shopping, Superstar Firms, and Implications for Retail Markups
(Forthcoming Article) - This paper documents an increase in concentration of household shopping in the US retail sector from 2004-2019. Despite a growing number of stores, households visit fewer store...
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Paul Raschky @raschky.bsky.social · 10/06/2025
We are hiring! We are seeking expressions of interest for appointment as Full Professor in the Department of Economics at Monash University. DM me if you have questions. econjobmarket.org/positions/11...
econjobmarket.org
EJM - Econ Job Market
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Johannes Buggle @jcbuggle.bsky.social · 06/06/2025
We are opening three full professor positions in beautiful Innsbruck!
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Sergio Ocampo @socampdi.bsky.social · 30/05/2025
Checkout @1954swilliamson.bsky.social analysis of *stablecoins* and the implications of the GENIUS act. Steve provides a straightforward understanding of the main issues👇
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Stephen Williamson @1954swilliamson.bsky.social · 30/05/2025
1/Krugman's piece is a useful summary of the implications of the GENIUS Act, which sets up a legal framework for stablecoins. To add to this, a stablecoin is basically a bank. Like all banks, it holds assets, and issues liabilities intended to ... paulkrugman.substack.com/p/digital-co...
paulkrugman.substack.com
Digital Corruption Takes Over DC
Time to call crypto what it is: A criminal enterprise
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Andrea Matranga @andreamatranga.bsky.social · 29/05/2025
The tragic landslide in Blatten gives me the excuse to tell you the story of how we found out Ice Ages existed. It's a cool story and the most important bit is rather similar to what's happening now.
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