In addition to our near end-of-day options quotes, greeks and theoretical price data, we offer raw options market information snapped with underlying prices every two minutes during the trading day. These files are zipped and are available at 7:30 pm EST after the close.
The 2-minute snapshots have history back to 2015 (our our near end-of-day options quotes go back to 2007).
Here is a snippet of the 2-minute data:
Note that there are no headers on the daily files and the timestamps are the file names.
Here are the header descriptions:
Here's a link to the snippet and description.
Each day the file is zipped to about 2 GB and made available at 7:30 PM on a S3 bucket we will ask you to set up on AWS.
Here are links to the files we used in the snippets above: