DIAN DIAGNOSTICS(SZ:300244) Sou Hu Cai Jing·2025-12-22 11:35Core Viewpoint - The Biotech Economy Index (970038) closed at 2120.29 points, down 0.12%, with a trading volume of 13.62 billion yuan and a turnover rate of 1.11% [1] Group 1: Index Performance - On the day, 16 stocks in the Biotech Economy Index rose, with Deep Technology leading at a 2.83% increase, while 30 stocks fell, with Dean Diagnostics leading the decline at 2.96% [1] - The net outflow of main funds from the Biotech Economy Index stocks totaled 640 million yuan, while retail investors saw a net inflow of 454 million yuan [1] Group 2: Top Constituents - The top ten constituents of the Biotech Economy Index include: - Mindray Medical (sz300760) with a weight of 12.66% and a market cap of 242.125 billion yuan [1] - Shizhu Aoshi (sz002252) with a weight of 4.95% and a market cap of 42.549 billion yuan [1] - Changchun High-tech (sz000661) with a weight of 4.56% and a market cap of 38.832 billion yuan [1] - Kanglong Chemical (sz300759) with a weight of 4.17% and a market cap of 51.585 billion yuan [1] - Taige Pharmaceutical (sz300347) with a weight of 4.10% and a market cap of 44.119 billion yuan [1] - Muyuan Foods (sz002714) with a weight of 3.87% and a market cap of 270.899 billion yuan [1] - Deep Technology (sz000021) with a weight of 3.86% and a market cap of 38.318 billion yuan [1] - Jiao Yue Medical (sz002223) with a weight of 3.22% and a market cap of 37.854 billion yuan [1] - Aimeike (sz300896) with a weight of 3.04% and a market cap of 43.694 billion yuan [1] - Watson Bio (sz300142) with a weight of 3.00% and a market cap of 17.833 billion yuan [1] Group 3: Fund Flow Details - The fund flow details indicate that Deep Technology had a main fund net inflow of 151 million yuan, while retail investors had a net outflow of 91.497 million yuan [2] - Kanglong Chemical experienced a main fund net inflow of 17.121 million yuan, with retail investors seeing a net inflow of 1.917 million yuan [2] - The Biotech Economy Index constituents underwent adjustments, adding 9 stocks and removing 9 stocks [2][3]