7709.HK is trading at HK$42.12, down 3.92%, primarily as memory-chip shares retreat after a rally. - Profit-taking and reassessments of elevated valuations and the sustainability of peak earnings growth coincide with slowing NAND-price momentum and mixed analyst views on memory companies. - Sharply higher Treasury yields reinforce the semiconductor selloff; memory stocks were lower in recent trading. - With roughly twice SK Hynix’s daily performance, 7709.HK can amplify sector weakness; no stronger 7709.HK-specific announcement or company catalyst was identified.