 Page List vs. Page Group: In Pega, a Page List is an ordered collection of pages indexed by position (e.g., 1, 2, 3). A Page Group, on the other hand, is an unordered collection of pages indexed by a string value (e.g., "CompanyA", "CompanyB").

 Sorting Requirement: Since the requirement specifies that the list must be sorted by company stock ticker, a Page List is more appropriate because it allows for sorting and ordered iteration.

 Implementation: Use a Data Transform or an activity to populate and sort the Page List. You can use Pega's built-in sorting functions to order the list by the stock ticker.

References:

Pega Academy: Data Management with Page Lists and Page Groups

Pega Documentation: Working with Collections