Southwest Securities International Securities Limited, together with its subsidiaries, provides various financial services in Hong Kong. It operates through Brokerage and Margin Financing, Corporate Finance, Asset Management, and Proprietary Trading segments. It acts as financial adviser for mergers and acquisitions, reorganizations, general offers, acquisition financing, and private equity; and a compliance and independent financial adviser. The company also offers debt products, including investment-grade, high-yield, convertible, preferred stock, and panda bonds; engages in agency trading of securities; futures and options; and provides insurance brokerage, margin financing services, financial products business, and one-stop integrated investment and financing services for high-net-worth clients. In addition, it offers sponsor, underwriting and placement, and financial advisory services; and investment management, investment advisory, and external asset management services, as well as securities and futures dealings and broking services. Further, the company offers consultation and trading services in the futures market, as well as custodian services; cash management and financing, investment management, wealth planning, and insurance planning services; investment products, such as equity, fixed income, and alternative assets; insurance products; and investment immigration services. Additionally, it distributes unit trusts, mutual funds, investment-linked, and broking index; provides insurance broking services; and provides back office and administrative services. The company was formerly known as Tanrich Financial Holdings Limited and changed its name to Southwest Securities International Securities Limited in May 2015. The company was founded in 1990 and is headquartered in Hong Kong, Hong Kong. Southwest Securities International Securities Limited is a subsidiary of Southwest Securities International Investment Company Limited.