Core Insights - The optical fiber concept sector saw a significant increase of 3.67%, ranking second among concept sectors, with 70 stocks rising, including notable gains from Zhishang Technology and Changguang Huaxin, both reaching a 20% limit up [1][2] Group 1: Market Performance - The optical fiber sector had a net inflow of 4.33 billion yuan, with 43 stocks receiving net inflows, and 16 stocks exceeding 100 million yuan in net inflows [2] - Leading the net inflow was BOE Technology Group, with a net inflow of 1.039 billion yuan, followed by Yongding Co., Taichang Technology, and Teifa Information with net inflows of 962 million yuan, 553 million yuan, and 490 million yuan respectively [2][3] Group 2: Stock Performance - Stocks with the highest net inflow ratios included Yongding Co. at 29.17%, Teifa Information at 21.16%, and Zhishang Technology at 15.51% [3] - Notable stock performances included Changguang Huaxin with a 20% increase, Yongding Co. with a 10.03% increase, and Teifa Information with a 10.02% increase [4][5] Group 3: Declining Stocks - Stocks that experienced declines included ZTE Corporation with a decrease of 2.26%, Hikvision with a drop of 0.92%, and Kaiwang Technology with a decline of 0.90% [1][7]