[olkyts]

Interesting. I didn't think it is a challenge until I came across this discussion.

Recently I saw this project on HN: https://openbb.co/ Venturebeat press release states that "The platform gleans its investment data via publicly available sources, among others that require an API key — these include Alpha Vantage, Financial Modeling Prep, Finnhub, Reddit, Twitter, Coinbase, the SEC, and many more." I haven't checked their git for data sources.

My question then is how do you build a data provider? Where do these data providers take their data that they sell, like Bloomberg?