Small, fast runner from Nairobi, for example, in Equity? (5,7)

I believe the answer is:

share capital

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'small fast runner from nairobi for example in equity?' is the definition.
I can't tell whether this definition defines the answer.

'small fast runner from nairobi for example' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'fast runner' becomes 'hare' (I've seen this before).
'from' says to put letters next to each other.
'nairobi for example' becomes 'capital' (nairobi is a kind of capital).
's'+'hare'+'capital'='SHARE CAPITAL'

Can you help me to learn more?

(Another definition for share capital that I've seen is " some company assets".)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.

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