光学光电子板块10月28日涨0.4%，合力泰领涨，主力资金净流出5.35亿元

Core Insights - The optical and optoelectronic sector saw a 0.4% increase on October 28, with Helitai leading the gains [1] - The Shanghai Composite Index closed at 3988.22, down 0.22%, while the Shenzhen Component Index closed at 13430.1, down 0.44% [1] Stock Performance - Helitai (002217) closed at 3.36, up 10.16% with a trading volume of 3.66 million shares and a transaction value of 1.207 billion yuan [1] - Tengjing Technology (688195) closed at 127.00, up 6.85% with a transaction value of 1.528 billion yuan [1] - Jili Zhihui (300219) closed at 7.55, up 6.04% with a transaction value of 535 million yuan [1] - Other notable performers include Shenhuafa A (000020) up 4.38% and Chenfeng Technology (603685) up 3.43% [1] Fund Flow Analysis - The optical and optoelectronic sector experienced a net outflow of 535 million yuan from institutional investors and 340 million yuan from retail investors, while retail investors saw a net inflow of 875 million yuan [2] - Helitai (002217) had a net inflow of 411 million yuan from institutional investors, while experiencing a net outflow of 182 million yuan from speculative funds [3] - Wanrun Technology (002654) had a net inflow of 165 million yuan from institutional investors, with a net outflow of 38.46 million yuan from speculative funds [3]