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On the midday break of March 5, 2026, the three major indices of the A-share market exhibited a collective upward trend. Specifically, the Shanghai Composite Index climbed by 0.84%, the Shenzhen Component Index surged by 1.67%, and the ChiNext Index soared by 2.43%. The semiconductor sector emerged as a standout performer, with Jucan Optoelectronics, Jufei Optoelectronics, and San'an Optoelectronics all reaching their daily price ceilings. In the storage sector, Biwin Storage witnessed a remarkable increase of over 12%, while Cambricon also posted a significant gain of more than 4%. The CPO (Co-Packaged Optics) concept stocks also showed strength, with Yiwei Communication jumping by over 11% and Zhongji Innolight advancing by more than 6%. Conversely, oil and gas stocks faced a retreat, with PetroChina experiencing a decline of over 3%.
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