Right sort of stock (6)
I believe the answer is:
equity
This could be a double definition.
'right sort' is the first definition.
'equity' can be an answer for 'right' (thesaurus). I am not certain of the 'sort' bit.
'stock' is the second definition.
(thesaurus)
'of' acts as a link.
Can you help me to learn more?
(Other definitions for equity that I've seen before include "Fairness; shareholding" , "Fairness or impartiality" , "Fairness, impartial treatment" , "Fair play - actors' union" , "Fairness for actors' trade union" .)