the australia and new zealand banking group limited, commonly called anz, is the third largest bank by market capitalisation in australia, after the commonwealth bank and westpac banking corporation. australian operations make up the largest part of anz's business, with commercial and retail banking dominating. anz is also the largest bank in new zealand, where the legal entity became known as anz national bank limited in 2003 and changed to anz bank new zealand limited in 2012. from 2003 to 2012, it operated two brands in new zealand, anz and the national bank of new zealand. the national bank brand was retired in 2012, with a number of branches closing and others converting to anz branches.