After rise, censure share value (3)
I believe the answer is:
par
'share value' is the definition.
(par is a share value in finance)
'after rise censure' is the wordplay.
'after rise' shows that the letters should be reversed in order (in a down clue, letters go up).
'censure' becomes 'rap' (rap can mean to criticise or reprimand).
'rap' backwards is 'PAR'.
(Other definitions for par that I've seen before include "Average standard" , "Average score for good golf player" , "Standard amount" , "Average score for round of golf" , "Normal golfing score" .)