Qatar Investment Authority and Brookfield Property Partners acquired 100 per cent of London’s Canary Wharf Group after buying out the remaining shareholders. Brookfield owned 22 per cent of CWG before the deal. The venture had already agreed to acquire Songbird Estates, which owned 69 per cent of CWG, in January in a deal that valued Songbird at about £2.6 billion ($3.9 billion). Songbird shares are expected to stop trading on London’s AIM market on April 23, according to a statement on Monday.