Saudi Aramco's shares rose over nine U.S. dollars, for a 10 percent daily limit, after their listing debut on December 11. This comes after the state-owned Saudi Arabian oil company's mammoth 25.6 billion U.S. dollar IPO, which set the record as the biggest in history. The company is trading on the Saudi Tadawul stock exchange, surpassing an earlier valuation of 1.7 trillion U.S. dollars to cap things off at 1.88 trillion U.S. dollars.