Market Performance - The optical and optoelectronic sector increased by 0.6% compared to the previous trading day, with Shengyang Technology leading the gains [1] - The Shanghai Composite Index closed at 3959.62, up 0.47%, while the Shenzhen Component Index closed at 13531.41, up 0.33% [1] Stock Performance - Key stocks in the optical and optoelectronic sector showed significant gains, with Shengyang Technology (603703) closing at 14.33, up 6.70% with a trading volume of 810,700 shares and a transaction value of 1.152 billion [1] - Other notable performers included Qianzhao Optoelectronics (300102) at 24.62, up 5.62%, and Tengjing Technology (688195) at 187.20, up 5.58% [1] Capital Flow - The optical and optoelectronic sector saw a net inflow of 244 million in main funds, while retail investors experienced a net outflow of 380 million [2] - The main funds' net inflow for Qianzhao Optoelectronics was 336 million, representing 8.17% of its trading volume [3] Individual Stock Analysis - Shengyang Technology had a main fund net inflow of 56.01 million, accounting for 4.86% of its trading volume, while retail investors had a net outflow of 63.82 million [3] - Dongtianwei (301183) reported a main fund net inflow of 233 million, with a retail net outflow of 275 million, indicating strong institutional interest [3]