Chipmaker CXMT vaults to top of China's valuation with 470% Shanghai debut surge
By Yantoultra Ngui and Samuel Shen SINGAPORE/SHANGHAI, July 27 (Reuters) - Shares of CXMT Corp surged 470% at their Shanghai debut on Monday in Asia's biggest IPO this year, catapulting the chipmaker to the top of China's stock market by valuation despite a recent selloff in global tech stocks. 
