The broader market rally coincided with a major development in the global memory-chip industry that could reshape long-term competitive dynamics.ChangXin Memory Technologies (CXMT), China’s leading DRAM maker, made a blockbuster stock market debut that underscores Beijing’s push to build a domestic memory champion.While the listing highlights rising competition in commodity memory, analysts believe Micron remains well positioned in the faster-growing AI memory market.IPO Puts China’s Memory Ambitions In FocusCXMT raised 57.92 billion yuan, or $8.55 billion, after pricing its IPO at 8.66 yuan per share. The stock surged more than 531% to about 54.60 yuan, valuing the DRAM maker at…