Share of the profits reduced (3)
I believe the answer is:
cut
This clue is a double definition.
'share of the profits' is the first definition.
(I've seen this before)
'reduced' is the second definition.
(similar in meaning)
(Other definitions for cut that I've seen before include "Shorten; remove" , "Axe" , "Stop filming" , "Reduce; joint (of meat)" , "Prune" .)