Crossword Genius

Object with anger after supporter backs market exploitation (9)

Ross

I believe the answer is:

arbitrage

I'm a little stuck... Click here to teach me more about this clue!

'market exploitation' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe there's a link between them I don't understand?

'object with anger after supporter backs' is the wordplay.
'object' becomes 'it' (pronoun for an inanimate object).
'with anger' becomes 'rage' (rage is a kind of anger. I am not sure about the 'with' bit.).
'after' says to put letters next to each other.
'supporter' becomes 'bra' (a bra gives support to breasts).
'backs' says the letters should be written backwards.
'bra' written backwards gives 'arb'.
'it'+'rage'='itrage'
'itrage' after 'arb' is 'ARBITRAGE'.

Can you help me to learn more?

(Other definitions for arbitrage that I've seen before include "Market trading" , "Making a turn" , "Financial juggling" , "Market dealer's activity" .)

I've seen this clue in The Independent.
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