It is one of Hong Kong's leading public companies in terms of market capitalisation and is part of the HSBC Group, which holds a majority equity interest in the bank.

[8] Hang Seng Bank began to extend its business to China[9] in 1985,[8] with the opening of a representative office in Shenzhen.

[8] Within the same year, Hang Seng Bank introduced a brand revitalisation program and presented a new company slogan – Managing wealth for you, with you.

[3] In November, Hang Seng Bank opened its new Hong Kong office at MegaBox, Kowloon Bay.

[8] In February 2012, Hang Seng Bank introduced the world's first RMB gold exchange-traded fund (ETF).

[3] The subsidiary runs a mainland China network of 46 outlets in Beijing, Shanghai, Guangzhou, Shenzhen, Dongguan, Fuzhou, Nanjing, Hangzhou, Ningbo, Tianjin, Kunming, Foshan, Zhongshan, Huizhou, Xiamen, Zhuhai and Jiangmen with 12 branches and 34 sub-branches.

[3] For foreign currency wholesale business, Hang Seng Bank maintains branches in Shenzhen, Macau and Singapore, as well as a representative office in Taipei.