HSBC Group CEO Stuart Gulliver speaks during a ceremony launching a commemorative 150th anniversary banknote in Hong Kong March 4, 2015. HSBC Holdings Plc toned down celebrations for its 150th anniversary on Tuesday, centering events on Hong Kong where it was founded, after being rocked by allegations its Swiss unit helped clients dodge taxes. REUTERS/Bobby Yip (CHINA - Tags: BUSINESS ANNIVERSARY)