Market Overview - The optical and optoelectronic sector experienced a decline of 0.49% on September 12, with Senba Sensor leading the drop [1] - The Shanghai Composite Index closed at 3883.69, up 0.22%, while the Shenzhen Component Index closed at 12996.38, up 0.13% [1] Stock Performance - Notable gainers in the optical and optoelectronic sector included: - Tianshan Electronics (301379) with a closing price of 26.00, up 6.60% [1] - Wanrun Technology (002654) at 13.95, up 5.28% [1] - ST Yushun (002289) at 31.47, up 3.18% [1] - Conversely, significant decliners included: - Linjie Sensor (300701) at 13.85, down 3.01% [2] - Jingwei Huikai (300120) at 9.70, down 3.00% [2] - Aibisen (300389) at 16.53, down 2.54% [2] Capital Flow - The optical and optoelectronic sector saw a net outflow of 1.895 billion yuan from institutional investors, while retail investors contributed a net inflow of 1.354 billion yuan [2] - The capital flow for specific stocks indicated: - Wanrun Technology (002654) had a net inflow of 76.83 million yuan from institutional investors [3] - Dongtian Micro (301183) saw a net inflow of 42.97 million yuan from institutional investors [3] - Tianshan Electronics (301379) experienced a net inflow of 23.71 million yuan from institutional investors [3]