Not subjects one finds in taking stock (5)
I believe the answer is:
kings
'not subjects one' is the definition.
I can't judge whether this definition defines the answer.
'in taking stock' is the wordplay.
'in' says the answer is hidden in the clue.
'KINGS' is hidden in the letters of 'taking stock'.
'finds' acts as a link.
Can you help me to learn more?
(Other definitions for kings that I've seen before include "Name of two Old Testament books" , "feature of 21/23 [NATIVITY SCENE]" , "Book (or two) of the Bible" , "Valley of the - -" , "Rulers" .)