You can create comparisons that analyze the WorldCat holdings set in your institution with the holdings in WorldCat by other institutions. WorldCat comparisons. This comparison counts towards the 25 allotted comparisons for the Collection Evaluation subscription.
After you create the comparison, you can access it on the My Comparisons page in the list of active comparisons. When you click the name of the WorldCat comparison in the table, the WorldCat Unique/Shared Comparison page opens.