Data sources such as Yahoo Finance and Investing.com are not complete. Yahoo finance does not have comprehensive data for commodities and currencies, while Investing.com’s historical is limited.
Of course you can access all this data on Bloomberg, but that costs $24k a year.
We’re providing you as much free historical market data as possible. This includes indices, equities, commodities, currencies, and bonds. All of our data can be downloaded in an Excel file.