Napisałem do Simply wallstreet skąd mają dane, ale już sami będziecie musieli sobie przetłumaczyć leniwe świnie xd
„ We source all data from our data provider S&P Global Market Intelligence. They capture data from publicly available documents (e.g, annual report, company filings etc.).
For this one, I will validate it with our data provider and I'll get back to you as soon as I have an update.”