Go to Insights > Subscribers > Individual Subscriber Metrics. Filter the information however you'd like with the orange filter in the top right corner of the screen, and finally, click Export to CSV in the filter menu.
Once you receive notification of the finished CSV export, find the file within your Exports tab of your Insights. Download the file and in the last column of the exported sheet, you'll find each individual subscriber's top five categories (taking into consideration both implicit and explicit interests). The Top 5 Interests column will look something like this for each individual in your organization's Cerkl:
Then, using your Excel-lent skills, you can filter the categories column to get valuable insights on your subscribers (e.g. organize your audience by each category).