光纤概念涨3.61%，主力资金净流入42股

Core Insights - The optical fiber concept index rose by 3.61%, ranking third among concept sectors, with 72 stocks increasing in value, including a 20% limit up for companies like Changguang Huaxin and Guangku Technology [1][2] Group 1: Market Performance - The optical fiber sector saw a net inflow of 4.09 billion yuan, with 42 stocks receiving net inflows, and 12 stocks exceeding 100 million yuan in net inflows [2] - Leading the net inflow was Yongding Co., with 935 million yuan, followed by Changxin Bochuang and Guangku Technology with 630 million yuan and 539 million yuan respectively [2][3] Group 2: Stock Performance - Top performers included Yongding Co. (10.01% increase), Changxin Bochuang (13.87% increase), and Guangku Technology (20.00% increase) [3][4] - Stocks with the highest net inflow ratios were Fuzhijing Technology (45.00%), Yongding Co. (31.96%), and Changfei Optical Fiber (29.99%) [3][4] Group 3: Sector Comparison - The F5G concept led the day's gains with a 4.52% increase, while the optical fiber concept followed closely at 3.61% [2] - Other sectors such as metal lead and Hainan Free Trade Zone also showed positive performance, indicating a generally favorable market environment for certain sectors [2]