Possible Data Vendors - QuanTesla/QuanTesla GitHub Wiki

We're using yahoo finance for now

https://www.tdameritrade.com/tools-and-platforms/thinkorswim/features.page (My pro quant friend uses this platform for data)

https://www.money.net/ (Stock data)

https://grufity.com/ (Stock data)

https://www.quandl.com/data/EOD-End-of-Day-US-Stock-Prices?filterSelection=sample&keyword= (Stock data)

https://simplywall.st/portfolio/default (Stock data)

https://www.thinknum.com/ (Stock and event data)