Investment bank in exclusive negotiatiosn to buy Australian management platform. : Investment bank Macquarie has entered into exclusive negotiations to buy a stake in the management platform of Investa Property Group. Macquarie confirmed today that its wholly-owned subsidiary Macquarie Real Estate Investment Holdings (Australia) and Investa Commercial Property Fund Holdings (ICPFH) are in discussions. The proposal is to create a joint venture in which the Macquarie entity would directly acquire 50% of the shares held by ICPFH in Investa Office Management Holdings, the holding company of the manager and responsible entity of Investa Office Fund (IOF).