Zheng Xing Xing Ye Ri Bao·2025-09-19 08:41Market Overview - The optical and optoelectronic sector rose by 0.75% on September 19, with Tianshan Electronics leading the gains [1] - The Shanghai Composite Index closed at 3820.09, down 0.3%, while the Shenzhen Component Index closed at 13070.86, down 0.04% [1] Top Gainers - Tianshan Electronics (301379) closed at 29.54, up 19.98% with a trading volume of 360,500 shares [1] - Tengjing Technology (688195) closed at 132.14, up 14.94% with a trading volume of 151,800 shares [1] - Wavelength Optoelectronics (301421) closed at 108.30, up 14.60% with a trading volume of 248,300 shares [1] - Other notable gainers include Yingfeite (300582) up 14.14% and Fujing Technology (002222) up 10.00% [1] Top Losers - Biaosheng Sensor (300701) closed at 13.78, down 7.95% with a trading volume of 289,000 shares [2] - Helitai (002217) closed at 3.55, down 6.58% with a trading volume of 4,545,500 shares [2] - Chanzhan Optoelectronics (003019) closed at 39.67, down 6.06% with a trading volume of 146,900 shares [2] Capital Flow - The optical and optoelectronic sector saw a net inflow of 2.376 billion yuan from institutional investors, while retail investors experienced a net outflow of 855 million yuan [2][3] - Major stocks like Oufei Optoelectronics (002456) had a net inflow of 1.986 billion yuan from institutional investors [3] Individual Stock Performance - Oufei Optoelectronics (002456) had a net inflow of 1.986 billion yuan, representing 16.98% of its trading volume [3] - Fujing Technology (002222) saw a net inflow of 369 million yuan, accounting for 12.08% of its trading volume [3] - Wanrun Technology (002654) had a net inflow of 238 million yuan, representing 11.44% of its trading volume [3]