Zheng Xing Xing Ye Ri Bao·2025-09-30 08:42Market Overview - The optical and optoelectronic sector increased by 0.47% on September 30, with Tianshan Electronics leading the gains [1] - The Shanghai Composite Index closed at 3882.78, up 0.52%, while the Shenzhen Component Index closed at 13526.51, up 0.35% [1] Top Performers - Tianshan Electronics (301379) closed at 31.59, up 10.22% with a trading volume of 415,900 shares and a turnover of 1.336 billion yuan [1] - Wavelength Optoelectronics (301421) closed at 129.95, up 7.88% with a trading volume of 197,800 shares and a turnover of 2.484 billion yuan [1] - Infinet (300582) closed at 17.43, up 6.28% with a trading volume of 169,900 shares and a turnover of 293 million yuan [1] Underperformers - ST Yushun (002289) closed at 37.28, down 4.99% with a trading volume of 59,300 shares and a turnover of 225 million yuan [2] - Gobi Jia (835438) closed at 44.08, down 4.57% with a trading volume of 52,100 shares and a turnover of 233 million yuan [2] - Deep Huafa A (000020) closed at 14.78, down 4.34% with a trading volume of 201,300 shares and a turnover of 299 million yuan [2] Capital Flow - The optical and optoelectronic sector experienced a net outflow of 369 million yuan from institutional investors, while retail investors saw a net inflow of 242 million yuan [2] - The main stocks with significant net inflows included Sanan Optoelectronics (600703) with 143 million yuan and Tianshan Electronics (301379) with 132 million yuan [3] - Wavelength Optoelectronics (301421) had a net inflow of 112 million yuan from retail investors [3]