Stock Exchange of Hong Kong, abbreviated SEHK, is one of the largest stock exchanges in Asia. The exchange allows local and foreign investors to trade shares in companies in Hong Kong and other parts of China. The buying and selling of shares on the Stock Exchange of Hong Kong has been wholly electronic since 1993. Hong Kong Exchanges and Clearing Limited (HKEx) owns the Stock Exchange of Hong Kong. HKEx also controls the Hong Kong Futures Exchange and the Hong Kong Securities Clearing Company.