iiinova — where your digital self keeps evolving

Arpit Gupta @arpitrage.bsky.social · 14/09/2026

Am consistently impressed with the prevalence of lawn cutting robots in Europe vs the US Despite average US wages maybe 30-40% higher (though Finnish wages compressed on lower end which contributes to capital intensity)

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Arpit Gupta @arpitrage.bsky.social · 13/09/2026

Back to my favorite hand pulled noodle spot in Helsinki

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Arpit Gupta @arpitrage.bsky.social · 10/08/2026

Time to launch a distillation attack on the discipline of urban planning

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Arpit Gupta @arpitrage.bsky.social · 16/07/2026

Yeah, The Odyssey, the classic Greek tale about how people should defy Gods and that never goes badly

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Arpit Gupta @arpitrage.bsky.social · 08/07/2026

An unexpectedly pleasant feature of Varese is high tree cover for Southern Europe An expectedly pleasant feature is lawn cutting robots and underground car parks

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Arpit Gupta @arpitrage.bsky.social · 29/06/2026

You have the usual chaining and substitution issues with price indices. During my tenure, we treated it with healthy skepticism, and you can see here also even past boards held increases below PIOC adjustments But the time series correlation between guidelines and PIOC is high, and low against CPI

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Arpit Gupta @arpitrage.bsky.social · 29/06/2026

I think this gives you a clearer picture. This shows the RGB Rent Index (which incorporates the annual adjustments voted on, as well as other changes allowed pre-2019 such as decontrol etc. You see RGB decisions track PIOC much more than CPI pre-Covid

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Arpit Gupta @arpitrage.bsky.social · 25/06/2026

NYC restaurants now offer prebiotics to reduce the hangover the next day

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Arpit Gupta @arpitrage.bsky.social · 15/06/2026

Week six of my class on AI and Finance: Asset Management and Trading • Scaling laws for alpha • Distinguishing between spurious and genuine factors • Who captures value when markets get more efficient arpitrage.substack.com/p/6-signal-a...

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Arpit Gupta @arpitrage.bsky.social · 14/06/2026

Local Law 11 comes for NYU Stern

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Arpit Gupta @arpitrage.bsky.social · 09/06/2026

We used to know how to make facades in this country

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Arpit Gupta @arpitrage.bsky.social · 29/05/2026

Did not realize that Watergate was an urban courtyard design

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Arpit Gupta @arpitrage.bsky.social · 24/05/2026

A building grows in Manhattan

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Arpit Gupta @arpitrage.bsky.social · 21/05/2026

Pretty happy with my latest book haul

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Arpit Gupta @arpitrage.bsky.social · 30/03/2026

We start with the basic problem: due to a number of overlapping frictions, housing construction is prone to boom-bust cycles and fragmented markets. This results in a capital-light, contractor-heavy model of on site construction which has seen *negative* productivity growth

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Arpit Gupta @arpitrage.bsky.social · 20/02/2026

Attention and mental wellbeing, dramatically improve after RCT limited smartphone access cc @paulgp.com academic.oup.com/pnasnexus/ar...

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Arpit Gupta @arpitrage.bsky.social · 09/02/2026

I did a bit of searching around, and all of this was a massive research area in the 70s-80s. People thought about (and people did originate) all sorts of mortgages, including this "PLAM" option with fixed real payment Biggest downside is hardship of escalating payments, generating possible mismatch

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Arpit Gupta @arpitrage.bsky.social · 02/02/2026

I'm teaching a new course at Stern on AI in Finance and opening it up! Syllabus/slides on Github: github.com/arpitrage/ai... Weekly summaries on Substack arpitrage.substack.com/p/1-three-ru... First post is on Amdahl's Law, Jevons' Paradox, and why finance was slow to learn the bitter lesson

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Arpit Gupta @arpitrage.bsky.social · 29/01/2026

Lot of good posts on Twitter still

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Arpit Gupta @arpitrage.bsky.social · 14/01/2026

In the paper too, but you can see it here

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Arpit Gupta @arpitrage.bsky.social · 14/01/2026

This channel of increased scale accounts for about half of the impact of remote work on productivity. The benefits are seen in the productivity rate of new hires, and also seem to spillover to other workers because existing employees also benefit when new workers join.

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Arpit Gupta @arpitrage.bsky.social · 14/01/2026

Why? Hiring constraints. Startups once found it hard to compete with established incumbent firms with many offices Remote startups increase job postings, hire more per posting, and scale faster. Remote large firms struggle with retention challenges of existing employees

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Arpit Gupta @arpitrage.bsky.social · 14/01/2026

Our key finding is that remote critics and boosters both have a point. Remote work increases productivity for workers at *startups* while reducing it for incumbent firms We instrument for remote work with pre-pandemic occupational suitability for identification

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Arpit Gupta @arpitrage.bsky.social · 14/01/2026

There’s a paradox around remote work. Jamie Dimon says it will kill productivity, while startups are hiring for remote roles. Who is right? With Abhinav Gupta and Elena Simintzi we try to resolve this dispute Paper: papers.ssrn.com/sol3/papers.... Substack: arpitrage.substack.com/p/remote-wor...

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Arpit Gupta @arpitrage.bsky.social · 04/01/2026

Some sort of falcon (?) over here in the urban jungle cc @hoffprof.bsky.social

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Arpit Gupta @arpitrage.bsky.social · 24/12/2025

Three new corridors announced for the Delhi metro

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Arpit Gupta @arpitrage.bsky.social · 08/11/2025

UPDATE: more road cutting up in the works

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Arpit Gupta @arpitrage.bsky.social · 02/11/2025

Some scissor stairs in an NYC luxury rental built 1998

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Arpit Gupta @arpitrage.bsky.social · 01/11/2025

Even when New Yorker authors are rioting over a new editor appointment — they still do the pretentious diaeresis thing

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Arpit Gupta @arpitrage.bsky.social · 01/11/2025

Good news everyone: W 4th St in front of NYU yet again under construction

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Arpit Gupta @arpitrage.bsky.social · 14/10/2025

Nothing more beautiful than some pre 1916, no setback, high FAR NYC housing stock

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Arpit Gupta @arpitrage.bsky.social · 04/10/2025

On days like this I have to concede New York City is a functioning communist government

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Arpit Gupta @arpitrage.bsky.social · 30/09/2025

Pretty solid Yap stone over here; the crypto of its day

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Arpit Gupta @arpitrage.bsky.social · 30/09/2025

You want sub 1 TFR? This is how you get it

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Arpit Gupta @arpitrage.bsky.social · 28/09/2025

Connecticut is going to spend $1 billion on a moveable bridge to serve *one* boat that goes up and down the river. The Army Corps of Engineers was inflexible on this issue despite the cost bloat. Should be a go to example for “marble cake federalism.” By @zliscow.bsky.social interviewed by Ruiz

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Arpit Gupta @arpitrage.bsky.social · 28/09/2025

Museums seem to have a bit too much adjoined office space. This could just be more exhibits!

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