National Australia Bank (abbreviated NAB, branded nab) is one of the four largest financial institutions in Australia in terms of market capitalisation, earnings and customers.[4] NAB was ranked 21st largest bank in the world measured by market capitalisation[5] and 50th largest bank in the world as measured by total assets in 2014, falling to 49th largest in March 2016.[6] As of November 2014[update] NAB operated 1,590 branches and service centres; and 4,412 ATMs across Australia, New Zealand and Asia serving 12.7 million customers.[7]