Opportunistic investor decides to retain the 10 shopping centres. : Blackstone has called off the sale of its multi-billion-dollar retail portfolio in Australia, and will now reposition some of the assets to improve their appeal to investors. As reported by IPE Real Estate earlier this year, the portfolio of shopping centres was the biggest to be put on the market in the country and had been expected to fetch up to AUD3.5bn (€2.35bn).