Equity expert (7)
I believe the answer is:
analyst
'equity expert' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for analyst that I've seen before include "Expert who examines and dissects, say systems" , "One making detailed study" , "Scientific or technical worker" , "One examining in detail" , "Student of eg systems or psyche" .)