林业板块1月21日跌6.32%，平潭发展领跌，主力资金净流出5.42亿元

Group 1 - The forestry sector experienced a decline of 6.32% on January 21, with Pingtan Development leading the drop [1] - The Shanghai Composite Index closed at 4116.94, up 0.08%, while the Shenzhen Component Index closed at 14255.12, up 0.7% [1] - Major stocks in the forestry sector showed mixed performance, with ST Jinggu rising by 1.47% and Pingtan Development falling by 8.94% [1] Group 2 - The net outflow of main funds in the forestry sector was 542 million yuan, while retail investors saw a net inflow of 566 million yuan [1] - Detailed fund flow data indicated that Yong'an Forestry had a main fund net inflow of 12.22 million yuan, but also experienced outflows from both speculative and retail investors [2] - Pingtan Development faced significant main fund outflow of 556 million yuan, despite a substantial net inflow from retail investors of 571 million yuan [2]