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I've not heard of Jane Street, but looking at the site, it seems they're quite the tech-savvy group for an _asset trading_ company. And reading the article, the

I've not heard of Jane Street, but looking at the site, it seems they're quite the tech-savvy group for an _asset trading_ company. And reading the article, they apparently "trade" (pun intended) in quite a few different things from CSS to OCaml, which is really nice to see for a place that doesn't directly deal with software as their [business] product (or did I misunderstand their market?).

JdeBP 1y ago
If you want to learn about Jane Street: 1. Watch Stand-Up Maths and Numberphile videos on YouTube and do not skip the sponsor advertisement readings, e.g. https://youtube.com/watch?v=eqyuQZHfNPQ https://youtube.com/watch?v=eqyuQZHfNPQ . 1. Read https://news.ycombinator.com/item?id=44480916 https://news.ycombinator.com/item?id=44480916 .
deleted 1y ago
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pjmlp 1y ago
They are basically the main company driving OCaml development outside INRIA, and the main authors behind Real World Ocaml book (https://dev.realworldocaml.org https://dev.realworldocaml.org), which followed up a similar one for Haskell.
logicchains 1y ago
> which is really nice to see for a place that doesn't directly deal with software as their [business] product Part of Jane Street's business is HFT, and software is the "product" of HFT firms, because without extremely low-latency software (and hardware) they cannot make money.
redwood 1y ago
The Economist's take https://www.economist.com/finance-and-economics/2025/06/26/jane-streets-sneaky-retention-tactic https://www.economist.com/finance-and-economics/2025/06/26/j...
- stuartjohnson12 1y ago
  https://archive.ph/6Pn0K https://archive.ph/6Pn0K
tfsh 1y ago
Jane Street is a technology company first and foremost whose main product is high frequency training, which is similar to mang of these neo-hedge funds (e.g. HRT, Citadel). Which is contrasted to the more established asset managers (e.g. BlackRock, Vanguard, BRK, etc) which I can say from experience are corps tied down in bureaucracy.
maxatoms 1y ago
They are also a sponsor of ZuriHac (https://youtu.be/Jzh3e-I4j-w?feature=shared&t=817 https://youtu.be/Jzh3e-I4j-w?feature=shared&t=817)

JdeBP 1y ago

If you want to learn about Jane Street: 1. Watch Stand-Up Maths and Numberphile videos on YouTube and do not skip the sponsor advertisement readings, e.g. https://youtube.com/watch?v=eqyuQZHfNPQ https://youtube.com/watch?v=eqyuQZHfNPQ . 1. Read https://news.ycombinator.com/item?id=44480916 https://news.ycombinator.com/item?id=44480916 .

deleted 1y ago

[deleted]

pjmlp 1y ago

They are basically the main company driving OCaml development outside INRIA, and the main authors behind Real World Ocaml book (https://dev.realworldocaml.org https://dev.realworldocaml.org), which followed up a similar one for Haskell.

logicchains 1y ago

> which is really nice to see for a place that doesn't directly deal with software as their [business] product Part of Jane Street's business is HFT, and software is the "product" of HFT firms, because without extremely low-latency software (and hardware) they cannot make money.

redwood 1y ago

The Economist's take https://www.economist.com/finance-and-economics/2025/06/26/jane-streets-sneaky-retention-tactic https://www.economist.com/finance-and-economics/2025/06/26/j...

stuartjohnson12 1y ago
https://archive.ph/6Pn0K https://archive.ph/6Pn0K

tfsh 1y ago

Jane Street is a technology company first and foremost whose main product is high frequency training, which is similar to mang of these neo-hedge funds (e.g. HRT, Citadel). Which is contrasted to the more established asset managers (e.g. BlackRock, Vanguard, BRK, etc) which I can say from experience are corps tied down in bureaucracy.

maxatoms 1y ago

They are also a sponsor of ZuriHac (https://youtu.be/Jzh3e-I4j-w?feature=shared&t=817 https://youtu.be/Jzh3e-I4j-w?feature=shared&t=817)