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Ask HN: What are you working on? (September 2026)

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Re: Ask HN: What are you working on? (September 2026)

#632

Post by JonArnfred »

I'm working on ownershiptrace.com. It's an entry point to SEC, FINRA and congressional trades filings. The target users are sophisticated retail investors. It's an early work in progress, and hopefully will have a substantial free tier. Let me know if you would like to provide feedback, in which case I'll give you a free premium version (limited amount ofcourse).

Re: Ask HN: What are you working on? (September 2026)

#635

Post by sensecall »

ahallan wrote: post #572

http://schoolholidays.deals/ A UK-based flight deals service aimed specifically at parents who can only travel during term-time. Having this issue myself now with two children whereby flight prices double going into school holiday season, I have always wanted some kind of service which alerts me of good deals. I still have a long way to refining the actual product, but trying to fit the development around work commit…

This is a great idea.

I'd love some way to have multiple schools (which may not have exactly aligned term dates).

Also - and I'm sure you've considered it - but maybe something which allows for a day or 2 at the start or end of the holiday. I've found this drastically affects prices.

Re: Ask HN: What are you working on? (September 2026)

#636

Post by Cthulhu_ »

xyst wrote: post #473
chumzygood wrote: post #250

I run a small experiment on this: 29 paper-trading accounts on real US stock prices, $100k each, since July 27. Four AI models (ChatGPT, Claude, Grok, Gemini) each write a trading rulebook and rewrite it every day from their own results. One account is a fixed rulebook that no AI ever touches, as a control. Result so far (paper, 34 trading days): the no-AI control is +13.0%, the S&P 500 is +3.4%, and 25 of the 28 AI…

> paper-trading come back when you put it real money and have some skin in the game.

I wouldn't trust AI with real money though. (I barely trust myself with it lmao)

Re: Ask HN: What are you working on? (September 2026)

#637

Post by chartrow »

https://chartrow.com/ is a website to visualize stock market data.

Examples:

this table shows the outperformance of QQQ in recent years: https://chartrow.com/visuals/periodic-table#window=10

This page shows stocks that are cheap relative to their own multiples in the past 10 years: https://chartrow.com/visuals/valuation-dip?view=charts

This is a stock screener that shows histograms: https://chartrow.com/screener

This page shows stocks with high "shareholder yield" (dividend yield + buyback yield): https://chartrow.com/lists/shareholder-yield-stocks

Re: Ask HN: What are you working on? (September 2026)

#638

Post by butlersean »

VO is my dynamic language, its weird but i like it.

functional, OO and dynamic, its 'extendable' from within the language.

- Unicode so Symbols are legit.

- functions are first class objects, assignable to variables.

- classes are hash with functions assigned to members giving methods.

- as much as possible is defined within the language so its self extending.

- pre/infix can be defined by the client programmer so parameter ordering is under control.

- use loops and break and conditions to define all the various loop syntax sugar you know and love.

- FFI is nearly trivial, ncurses and sdl wrapper examples

TODO

- complete control of the AST from within the language

- further optimisations

- ffi needs further work

https://github.com/seanbutler/vo Claude assists and implements some of the features

Still under regular development. Happy to talk with collaborators if this kind of thing interests you too.

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