Wall Street type (6)
I believe the answer is:
trader
'wall street type' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for trader that I've seen before include "Dealer who buys and sells" , "Red tar (anag)" , "Person in the business of buying and selling" , "Merchant ship; dealer" , "Tarred the dealer badly" .)