First of all, this post is primarily intended for traders and possibly people interested in stock market research. Nothing presented here or in the linked pages is financial advice.
I'm a web developer who got interested in the stock market about 3 years ago. After I started looking into market research tools, nothing seemed like too great of a fit for me and most were quite expensive.
For the past 2 years, I have been working on base.report. The first two features I needed were a screener and a stock details page (key financials numbers, candlestick charts, etc). Since I'm primarily interested in momentum trading, the screener consists mostly of technical filters and allows me to narrow down my pool of stocks based on price action and liquidity. If there is any company I'm especially interested in, I then use the stock details page to learn more about it.
Once these were ready, I opened up base.report to the public. The free version let's you try all of the features but is limited to tickers that start with the letter 'A'. The Pro version unlocks all tickers and is priced at $10/month.
Besides the two main features, I like to do historical studies of the stock market that sometimes inspire new features. These are fun opportunities for me to gain deeper understanding of past trends with the help of programming and machine learning.
The most recent study that I published is called "Do Chart Patterns Matter?" (link below). This research was instrumental in one of the most exciting features added this year, called "Similar Charts". As the name indicates, this feature allows you to find stocks based on their recent (200 trading sessions) price action correlation.
Another feature I want to mention is called "Chart Study" (link below), which is a tool with customizable widgets and UI to look for past moves a stock has made. One of the widgets, called "Advanced move finder", allows you to look for moves programmatically using JavaScript. This feature is also available as a stand-alone open source project.
The tech stack for this project is SvelteKit, TypeScript, tailwindcss, and PostgreSQL (supabase). It is hosted on Cloudflare Pages, with Cloudflare Workers KV for caching the Similar Charts results. LemonSqueezy is used for payment processing and mailersend for transactional emails. I also have a trusty Linode instance responsible for updating the DB daily using data provided by Financial Modeling Prep.
If you are still reading, thank you so much for taking the time and I want to tell you about the "Ramen Pass" that was recently announced (link below). base.report is at a stage where I would call it feature sufficient and I would like to grow our community. As a part of this effort, you now have the opportunity to get free access to the Pro version. Basically, just let me know what your trading experience is and you will get access. Of course I would appreciate a shoutout from your social media, but I understand the preference for privacy and sending me an email is just as good.
Links:
Do Chart Patterns Matter? - https://base.report/studies/do-chart-patterns-matter
Similar Charts example - https://base.report/ticker/AMD/similar-charts
Open source Chart Study tool - https://github.com/base-report/chart-study
Ramen Pass - https://twitter.com/stockbasereport/status/17060397716869737...