Crossword Genius

As cattle-keepers they expect to reap dividends (12)

Ross

I believe the answer is:

stockholders

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

'dividends' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how they can define each other.

'as cattle-keepers they expect to reap' is the wordplay.
I cannot quite see how this works, but
'cattle' could be 'stock' (I've seen this before) and 'stock' is found within the answer.
The remaining letters 'holders' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Irish Independent.
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