
Market Overview - The optical and optoelectronic sector experienced a decline of 0.53% on September 18, with Jiuliang Co. leading the drop [1] - The Shanghai Composite Index closed at 3831.66, down 1.15%, while the Shenzhen Component Index closed at 13075.66, down 1.06% [1] Stock Performance - Notable gainers in the optical and optoelectronic sector included: - Yongxin Yuanzi (603297) with a closing price of 119.02, up 10.00% [1] - Wavelength Optoelectronics (301421) at 94.50, up 7.24% [1] - Buxiu Biao (002745) at 9.88, up 6.81% [1] - Conversely, Jiuliang Co. (300808) saw a significant decline of 4.86%, closing at 30.33 [2] - Other notable decliners included: - ST Hengjiu (002808) down 4.67% [2] - Honghe Technology (002955) down 4.56% [2] Capital Flow - The optical and optoelectronic sector experienced a net outflow of 2.143 billion yuan from institutional investors, while retail investors saw a net inflow of 2.086 billion yuan [2] - The sector's overall capital flow indicates a mixed sentiment, with institutional selling and retail buying [2] Individual Stock Capital Flow - TCL Technology (000100) had a net inflow of 3.52 billion yuan from institutional investors, while retail investors experienced a net outflow of 1.39 billion yuan [3] - Sanan Optoelectronics (600703) saw a net inflow of 1.80 billion yuan from institutions, with retail investors also experiencing a net outflow [3] - Other stocks like Jingdongfang A (000725) and Mulin Sen (002745) also showed significant institutional inflows, indicating selective interest from larger investors [3]