Take a look at the tight price range that GPT has turned over in the past two days. Yesterday in excess of 340 million shares turned over in the range $0.44 to $0.485. If the seller (s) simply banged it all in as one sell order, the price would have dropped like a brick. By drip feeding the sale throughout the day, the broker(s) handling the disposal/acquisition were able to acheive a tight spread and a voulme weighted average probably within a range sought by their client.