I'd have to use it first to comment on it, but thanks so far. Article makes a good impression.

Let me know your thoughts and how it could be improved.

The scrolling animation / progress indicator thingy on your blog seems broken by the way. It quickly moves out of the visible view on a pretty normal setup (24" FHD screen, Linux, Firefox).

Thanks for the note! I removed this for now... will fix later.

Do you have any recommendations on how to store financial data?

Financial data, as in a time series of prices? It really depends on your budget, desired overhead, and amount of data. Some funds store data in flat files (broken down by date, instrument, ticker, etc), others use time series databases, such as ClickHouse or Kdb+. Using flat files is probably the simplest and most cost effective while still enabling you to store a massive amount of data, but using a database obviously enables querying and analytics.

Thanks