It has offices in 47 major cities in China including Shenzhen, Beijing, Guangzhou, Foshan, Nanjing, Shanghai, Tianjin and Hong Kong.

[2] Guosen Securities provides sales and trading, investment banking, research, asset management, private equity, and other financial services with both institutional and retail clients in China and Hong Kong.

2012 – Guosen Securities is scheduling an initial public offering in Shenzhen A-share market, with estimated proceeds of RMB 20 to 30 billion.

2019 - The Hong Kong Securities and Futures Commission (SFC) has reprimanded Guosen Securities (HK) Brokerage Company, Limited (Guosen) and fined it $15.2 million for failures in complying with anti-money laundering (AML) and counter-terrorist financing (CFT) regulatory requirements when handling third party fund deposits.

The SFC's investigation revealed that between November 2014 and December 2015, Guosen had processed 10,000 third party deposits totalling approximately $5 billion for more than 3,500 clients.

[6] The company is organized into five major business arms: sales and trading, investment banking, research, asset management, and private equity.

With 70 branches covering 47 major cities in China, Guosen was ranked top three in terms of trading volume in 2008–10, and accounted for 4.34% of market share in 2011.