How can I retrieve all historical data for Fundamentals?

Here's how to retrieve all historical data points for a Fundamentals value.

If you want to retrieve all historical data points for a Fundamentals value, such as PE Ratio, here's how to do it via the Intrinio API.

You can use a high page size to retrieve basically all the historical values for a data tag. Try: 

https://api-v2.intrinio.com/companies/AAPL/historical_data/pricetoearnings?page_size=10000 

Using a high page size is limited by the Bulk Request limit explained here. 

Another option would be to get a bulk download of US Fundamentals, which includes large CSV files with full history. Ongoing bulk downloads may be available with your existing API subscription; if you're not sure, please reach out to support@intrinio.com.