Saudi Arabia’s meager stock exchange hosts around 191 companies whose value totals roughly $500 billion, or a little more than half the value of Apple Inc. With one more very important listing, it could balloon in size—or be overwhelmed. So far, Saudi Arabia’s Tadawul is the only confirmed listing exchange for Saudi Arabian Oil Co., the giant company better known as Aramco, which the kingdom estimates could be worth $2 trillion. While the world’s leading stock exchanges and governments have been busy lobbying Saudi Crown Prince Mohammed bin Salman to be able to list Aramco , the Tadawul has been scrambling to ready itself . Seeking to prove it can successfully list and trade the stock of a company whose initial public offering would be the biggest ever , the Tadawul and its regulators have worked on a rapid-fire series of changes designed to bring its technology in line […]