After an auction has ended, you will see 2 buttons to export High Bids XLS/CSV and Lots Realized PDF. You can find these buttons by navigating here:
Admin Path: Auctions / High Bids (Tab)
The generated Lots Realized PDF will look like this:
High Bids XLS/CSV information is here.
Customers on the frontend of your website can click on the View PDF Button to generate a lots realized report.