The Competitor Rankings tab shows a list of all your keywords, and your competitors' rankings in those keywords.
Furthermore you a few more options we will elaborate on in this article.
Downloading Competitor reports
To download a competitor report, click "Download Report" and select the report type, and the competitors you wish to have in the report.
Filtering in Competitor Rankings, works the same way as it does in the keywords list. Currently you can filter for keywords and ranks.