Jean-Philippe Bouchaud's Archive
Sinéad O’SullivanComplexity Economics
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 60 | Founded | 4 years ago | Last Issue | 3 months ago |
| Active | |||||
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bouchaud.substack.comLatest Issues
Origins of the Square-Root Law
(Published by JP Bouchaud | Feb 2026)
Our paper "The ‘double’ square-root law: evidence for the mechanical origin of market impact using Tokyo stock exchange data", written together with Guillaume Maitrier Gregoire Loeper Kiyoshi Ka...
Why just‑in‑time supply chains make our economies live on the edge
(Published by JP Bouchaud | Feb 2026)
In our recent PNAS Perspective “Critical Fragility in Socio‑Technical Systems” we argued that many systems built on timeliness – trains, flights, hospitals, supply chains – are pushed by efficie...
From the Ground Up
(Published by JP Bouchaud | Oct 2025)
C. N. Yang, one of the great heroes of XXth century physics, has died at age 103.
Not necessarily the most humble guy, but his achievements are awesome.
He recounted that Fermi taught him...
Multivariate Quadratic Hawkes Processes
(Published by JP Bouchaud | Sept 2025)
Volatility is now well known to be path dependent, i.e. dependent on the path taken by recent price changes (see e.g. this paper by Julien Guyon). This is at odds with the popular, but deepl...
Bouchaud: Lunch with the FT
An interview with Robin Wigglesworth, the editor of FT Alphaville
It’s an overcast day in Paris, which is slowly coming back to life after the August exodus. The leaves have already begun to fall off the Champs-Élysées trees,...
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Sinead is a space and defense economist and investor. Formerly at Harvard Business School and MIT Sloane School of Management.
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