High Quality Content by WIKIPEDIA articles! Hong Kong Exchanges and Clearing Limited also is the stock exchange of Hong Kong. HKEx is the holding company for The Stock Exchange of Hong Kong Limited (SEHK), Hong Kong Futures Exchange Limited (HKFE) and Hong Kong Securities Clearing Company Limited. With a total market capitalization of over US$2.124 trillion as of as at 12 July 2007, the HKEx ranks fifth in the world by market capitalization of listed companies.