Where does Quandl's data come from?
Our free products come from a variety of credible and established sources: central banks, multinational organizations, exchanges, government agencies and so on.
Our premium products come from data providers who have decades of domain expertise creating highly accurate, reliable, professional grade data for sale. You can see a list of our data providers on our Partners page. If you're interested in becoming a data partner and would like to learn more about selling your data on Quandl, please go to our Data Monetization page and take our short survey.