Market cap of listed companies from mainland China at HKEX in Hong Kong 2015-2021

In 2021, the market capitalization of companies from mainland China listed on the Hong Kong Exchange (HKEX)amounted to over 33 trillion Hong Kong dollars. Companies from mainland China accounted for 79 percent of HKEX's market capitalization. The financial market in mainland China is very restrictive and only gives limited access to overseas investors. In contrast, listing companies on American stock exchanges is not easy for mainland Chinese companies. Thus, HKEX constitutes a practical compromise for many companies with proximity to the mainland China and access to global capital.