Type of company stock (9)
I believe the answer is:
repertory
I believe this clue is a double definition.
'type of company' is the first definition.
(I know that repertory is a type of theater company)
'stock' is the second definition.
(thesaurus)
(Other definitions for repertory that I've seen before include "Type of theatre" , "performance" , "Playhouse performing a regular stock of works" , "Collection" .)