TDG(SH:600330) Xin Lang Cai Jing·2025-12-29 06:54Group 1 - Tian Tong Co., Ltd. experienced a decline of 5.02% on December 29, with a stock price of 13.06 yuan per share, a trading volume of 3.017 billion yuan, a turnover rate of 18.27%, and a total market capitalization of 16.109 billion yuan [1] - The company, established on February 10, 1999, and listed on January 18, 2001, is located in Haining Economic Development Zone, Zhejiang Province. Its main business includes the research, manufacturing, and sales of electronic materials (including magnetic materials, sapphire, piezoelectric crystals, etc.) and high-end equipment [1] - The revenue composition of Tian Tong Co., Ltd. is as follows: 86.57% from electronic materials sales, 9.38% from specialized equipment manufacturing and installation services, and 4.05% from material sales and others [1] Group 2 - Among the top ten circulating shareholders of Tian Tong Co., Ltd., a fund under Southern Fund holds a position. The Southern CSI 1000 ETF (512100) reduced its holdings by 113,700 shares in the third quarter, now holding 11.2785 million shares, which accounts for 0.91% of the circulating shares [2] - The Southern CSI 1000 ETF (512100) was established on September 29, 2016, with a latest scale of 76.63 billion yuan. Year-to-date returns are 29.41%, ranking 1878 out of 4197 in its category; the one-year return is 25.16%, ranking 2056 out of 4180; and the return since inception is 14.52% [2]