橡胶板块10月28日涨0.81%，震安科技领涨，主力资金净流出5779.31万元

Market Overview - The rubber sector increased by 0.81% on October 28, with Zhen'an Technology 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 - Zhen'an Technology (300767) closed at 24.70, up 10.66% with a trading volume of 372,700 shares and a turnover of 909 million yuan [1] - Other notable performers include Huamao Co. (002068) with a 1.82% increase, and Quecheng Co. (605183) with a 1.66% increase [1] - The overall trading volume and turnover for the rubber sector stocks are detailed in the provided table [1] Capital Flow - The rubber sector experienced a net outflow of 57.79 million yuan from institutional investors, while retail investors saw a net inflow of 36.65 million yuan [2] - The capital flow for individual stocks within the rubber sector indicates varying levels of interest from different investor types [2][3] Individual Stock Capital Flow - Sanqiang Co. (002068) had a net inflow of 27.46 million yuan from institutional investors, while it faced a net outflow from retail investors [3] - Other stocks like Zhen'an Technology (300731) and Fengmo Co. (301459) showed significant net outflows from institutional investors, indicating potential selling pressure [3]