Which brokerage firms were the top three sponsors in terms of the number of companies listed?

ID : 1922
Long answer : “Top 3: CICC (19), CITIC (12), Huatai (7)” (Source: https://www.hstong.com/news/hk/detail/25010309085361970)
Short answer : China International Capital Corp, CITIC Securities, Huatai International
answer 2 : UBS Securities, Morgan Stanley, Guotai Junan
answer 3 : Goldman Sachs, Credit Suisse, CCB International
answer 4 : Bank of China, HSBC, ICBC