Landing place with fifty percent changing hands (5)

I believe the answer is:

wharf

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'landing place' is the definition.
(wharf is a kind of landing place)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for wharf that I've seen before include "Harbour platform" , "Waterfront platform" , "Come ashore here" , "Landing stage for cargo" , "Landing area" .)

I've seen this clue in The Times.

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