How do i contact hkex listed companies? Contact Persons in the Listing Division of HKEX for Listed Companies. Address: Hong Kong Exchanges and Clearing Limited. 12/F, Two Exchange Square, 8 Connaught Place, Central, Hong Kong. General Telephone number: 2522-1122.What is hong kong exchanges and clearing limited hkex? What Is Hong Kong Exchanges and Clearing Limited (HKEx)? Hong Kong Exchanges and Clearing Limited (HKEx) is a publicly-traded holding company that is one of the largest market operators in the world. Its subsidiaries include the Stock Exchange of Hong Kong and the Hong Kong Futures Exchange.What does hkex stand for? Hong Kong Exchanges and Clearing Limited (HKEx) is a publicly-traded holding company that promotes itself as one of the biggest market operations in the world.What are the primary services of hkex? The primary services of HKEx include listing, trading, clearing, market data, reference prices, and connectivity. HKEx also serves as a regulating body, overseeing the trading activities of companies listed in Hong Kong and those who participate in trading activities within its venue.