McLagan Partners, a subsidiary of Aon Consulting, announced it has acquired Z/Yen Limited, a London-based market intelligence firm. Terms of the deal were not released.

Z/Yen Limited measures cost per trade and operational efficiency across capital markets and has worked with over 30 major banks. It was a subsidiary of the Z/Yen Group.

All other work undertaken by the Z/Yen Group--such as management consultancy, research and predictive software--is unaffected by this change, the company said.

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