The story
Tai Fook Securities era
When the firm was known as Tai Fook Securities, it was accused that the firm lowered its commission below Stock Exchange of Hong Kong's minimum, by gifts from sister companies Chow Tai Fook Jewellery and New World Telephone in 1999.
Haitong International Securities Group era
Tai Fook Securities was then takeover by the Chinese firm Haitong Securities in 2009. Haitong Securities paid HK$1.82 billion to acquire the controlling stake of Tai Fook Securities from NWS Holdings. After the takeover, Tai Fook Securities was renamed to Haitong International Securities Group.
Haitong International is the first Chinese financial institution in Hong Kong to have been assigned a “BBB” long-term credit rating by Standard and Poor's. In November 2016 Haitong International Securities acquired Haitong Securities India from Haitong Bank, a sister company that formerly known as Banco Espírito Santo de Investimento.
From Wikipedia’s article on Haitong International, shared under CC BY-SA 4.0.4