How to use o2fx:
Yahoo Finance - Historical Data:
- Enter the stock symbol you want to find data for, and press Get Quotes:
- Click on the Historical Prices link in the left sidebar.
- Select the starting and ending dates as well as the sample rate (Daily, Weekly, Monthly), then press Get Prices.
- Scroll to the bottom of the page and right click on the Download to Spreadsheet link. Save the file as a csv.