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On September 21, 2026, the three primary indices of the A-share market commenced trading on a positive note, showing a collective upward trend. The Shanghai Composite Index climbed by 0.21%, the Shenzhen Component Index advanced by 0.55%, and the ChiNext Index surged by 0.93%. Leading the charge were the semiconductor and CPO (Co-Packaged Optics) sectors, with Siglent Technologies witnessing a nearly 7% increase. ChangXin Memory Technologies, Eoptolink Technology, and GigaDevice Semiconductor also experienced significant gains, each rising by more than 2%. Conversely, the oil, gas, and coal sectors faced notable downturns, with Zhengzhou Coal Industry dropping over 2%, Yunmei Energy declining more than 1%, and C ShenGu experiencing a staggering fall of over 48%.
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