Saudi Aramco, the world's largest oil company, plans to complete the largest IPO in the history by the second half of 2018 at a valuation of more than US$ 1 trillion. The competition for the participation of this plan has been joined by many exchanges in New York, London, Singapore, Tokyo, Hong Kong, Toronto and other places. Recently, the Hong Kong Stock Exchange once again extends its olive branch, stating that if Saudi Aramco chooses to be listed in Hong Kong, that would be a "perfect match".