I tried and failed. I manually went through hundreds of 10k/q's using bamsec.com to pull outstanding shares and then calculated it in Sheets by pulling price for the specific date. I factored in dilution if it happened between the 10k/q I was looking at and the date I needed market cap for. Sounds tedious but it wasn't too horrible using bamsec. TradingView also has a historical market cap indicator that you can... Source: over 2 years ago

Check out bamsec.com and fintel.io for past financial statements. Source: about 3 years ago

I am building a web app, and I would like to use the polygon.io API on the back-end to forecast the market sentiment. The individual upgrade is $200, while business upgrade would cost $2000. Would my use of the API considered personal or commercial? Source: 7 months ago

It's worth mentioning that we use polygon.io to provide market information, which has the ability to specify time frames for data. Each ChatGPT call will have the appropriate information at the time it should. We also use a temperature of 0, as we want idempotent predictions. Source: 12 months ago

I am currently testing the products from Polygon.io . They seem to have everything I need, however I noticed that sometimes prices are not adjusted for splits. I have seen on subreddit that this is a known problem with Polygon (about more than 3 years ago!) so I am wondering about the quality of their data. Source: 12 months ago

Polygon.io is our main data source, then we have other auxiliary sources to fill in other details polygon doesn't provide. Source: 12 months ago

To get the stock price data, we are going to use Polygon,. - Source: dev.to / about 1 year ago