Divided Westfield grabs World Trade Centre stake WESTFIELD Group has made a push to increase its offshore interests, a day after announcing it would hive off its Australian business, by buying the remaining 50 per cent stake in the World Trade Centre retail complex for $US800 million ($886m). Westfield will buy out the Port Authority of New York and New Jersey's half share in the $US1.4 billion complex being built on the site of the September 11, 2001, terror attacks in the US, to take full control of the property.