One of the world's biggest private equity managers submitted an all cash proposal to acquire an ASX-listed Investa fund. : One of the world's biggest private equity managers submitted an all cash proposal to acquire an ASX-listed Investa fund. Blackstone's indicative and non-binding proposal is to acquire the Investa Office Fund (IOF) at a price of $5.25 per unit, reduced by any distributions declared or paid by IOF prior to completion. Investa said the distribution-adjusted proposal represents a 13.2% premium to IOF's ex-distribution closing price on 25 May 2018.