林业板块10月21日跌1.73%，平潭发展领跌，主力资金净流出1.62亿元

Core Insights - The forestry sector experienced a decline of 1.73% on October 21, with Pingtan Development leading the losses [1] - The Shanghai Composite Index closed at 3916.33, up 1.36%, while the Shenzhen Component Index closed at 13077.32, up 2.06% [1] Sector Performance - ST Jinggu (600265) closed at 21.18, with an increase of 1.44% and a trading volume of 5870.88 lots, totaling 12.33 million yuan [1] - Yong'an Forestry (000663) closed at 6.87, up 0.15%, with a trading volume of 10.57 thousand lots, totaling 7.21 million yuan [1] - Fujian Jinsen (002679) closed at 11.32, down 2.16%, with a trading volume of 13.80 thousand lots, totaling 1.55 billion yuan [1] - Pingtan Development (000592) closed at 3.95, down 3.19%, with a trading volume of 497.89 thousand lots, totaling 1.95 billion yuan [1] Capital Flow - The forestry sector saw a net outflow of 162 million yuan from institutional investors, while retail investors had a net inflow of 177 million yuan [1] - Detailed capital flow for individual stocks shows: - ST Jinggu had a net inflow of 1.60 million yuan from institutional investors, but a net outflow of 1.43 million yuan from retail investors [2] - Fujian Jinsen experienced a net outflow of 2.80 million yuan from institutional investors, with a net inflow of 6.61 million yuan from retail investors [2] - Yong'an Forestry had a net outflow of 8.57 million yuan from institutional investors, but a net inflow of 11.11 million yuan from retail investors [2] - Pingtan Development faced a significant net outflow of 152 million yuan from institutional investors, with a net inflow of 16.17 million yuan from retail investors [2]