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Takeaways from the Jane Street bond prospectus

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71–80 of 343 posts

Re: Takeaways from the Jane Street bond prospectus

#71
post #40
post #23

Earlier quoted context omitted.

That works out to 8 million per person on average. I'd be interested to see if the Pareto distribution holds here as well, namely that 1% of employees (26) hold half the wealth ($10b).

I thought the Pareto distribution was most famously associated with 80-20? Of course you can change α to get whatever ratio you want but this is the first time I heard of the 50-1 ratio being used.

A power-law distribution probably describes it better.

Re: Takeaways from the Jane Street bond prospectus

#72

Earlier quoted context omitted.

> This is the average, it'd be interesting to know what's the median for a SWE is. 900k is average including janitors and HR. Median for SWE most definitely over $1 million. Turnover of 6%? No way people stick around “only” making 500-600k new grad comp. Check levels.fyi > Also, some high-level SWE do make 900K at Google and others And some high-level SWEs at JS make 9 figures, not 900k.

Janitorial staff is almost certainly subcontracted.

I'd agree for any other company or even public body, but I'd bet that JS prefer to keep it all in-house. They are extremely secretive.

Re: Takeaways from the Jane Street bond prospectus

#73
post #7

SBF got his start there right?

Yes, paid quite a lot of money to flip coins lol. There is a pretty big section about his time there in Michael Lewis's new book "Going Infinite".

That was the part of the book I found most interesting (although the whole book is a good and interesting read)

Re: Takeaways from the Jane Street bond prospectus

#74
post #12

I love them because they keep the OCaml dream alive, but any company shouldn't have this kind of reach, especially in the realm of automation. This probably won't end well... Meanwhile I'd love to know what their edge is... It's probably more than OCaml, although... ;)

What kind of reach? Just making a lot of money?From the article, it looks like they make a lot from market making in ETFs and similar. Thats an extremely competitive market that is necessarily a race to the bottom in terms of pricing

Re: Takeaways from the Jane Street bond prospectus

#75

> At the end of 2023, Jane Street employed 2631 people > About 80 per cent of the company's capital comes from employee equity, which has swelled to $21.3bn at the end of 2023 o.O

Are you telling me that one of American capitalism's peaks is basically a worker collective?

Re: Takeaways from the Jane Street bond prospectus

#76
post #75

> At the end of 2023, Jane Street employed 2631 people > About 80 per cent of the company's capital comes from employee equity, which has swelled to $21.3bn at the end of 2023 o.O

Are you telling me that one of American capitalism's peaks is basically a worker collective?

Unknown but unlikely. Doubtful that ownership shares are anywhere near equal.

Re: Takeaways from the Jane Street bond prospectus

#77

> At the end of 2023, Jane Street employed 2631 people > About 80 per cent of the company's capital comes from employee equity, which has swelled to $21.3bn at the end of 2023 o.O

A little further down:

> The real money is at the top. The bond prospectus reveals that Jane Street has 40 “equity unit holders on a full-time basis and in good standing”, with an average tenure of 16 years. Among those there will be at least a handful of billionaires, even if no Jane Streeter appears on any rich lists.

Sounds like any other partnership. A few people at the top are providing the equity and getting a profit share, and the thousands under them are getting salaries.

Re: Takeaways from the Jane Street bond prospectus

#78
post #5

If I remember correctly they are also by far the biggest poster child for OCaml, right? Blub Paradox at play here?

Might also be that Jane Street is to OCaml what WhatsApp was to Erlang. Many ascribed the success of the small team at WhatsApp to their tech-stack, Erlang and FreeBSD. The reality probably was that they had hired really smart people, and those people choose to use Erlang (because eJabberd), but they could have been just as successful using another language.

Yes, Jane Street uses OCaml, they have no reason to stop using OCaml, but may very well have been just as successful using another language. It's hard to tell, when we don't know the full circumstances of why they went with OCaml initially.

Re: Takeaways from the Jane Street bond prospectus

#79
post #75

> At the end of 2023, Jane Street employed 2631 people > About 80 per cent of the company's capital comes from employee equity, which has swelled to $21.3bn at the end of 2023 o.O

Are you telling me that one of American capitalism's peaks is basically a worker collective?

Is Google a worker collective just because new employees are thrown a handful of shares?

Re: Takeaways from the Jane Street bond prospectus

#80
post #58
post #12

I love them because they keep the OCaml dream alive, but any company shouldn't have this kind of reach, especially in the realm of automation. This probably won't end well... Meanwhile I'd love to know what their edge is... It's probably more than OCaml, although... ;)

I think OCaml is more of symptom of the people who they hire. Most companies don't want to hire OCaml and Haskellers. They fear they would be too expensive, and requires clear thinking so you can't hire bottom of the bucket devs. If you want to hire the best and willing to pay that is no longer a concern

I interviewed with them, a long long long time ago.

They use OCaml because it is explainable. Which it is. They use it like a non-lazy version of Haskell -- side effects are used rarely if ever. So there's no nonlocal behavior in the code, which makes it easy to reason about. And that kinda matters when a lot of money is at stake.

Incidentally, Standard Chartered has their own compiler for Haskell, without the laziness. The group is led by the guy famous for Cayenne (the first dependently typed Haskell dialect).

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