12月3日生物经济（970038）指数跌0.32%，成份股迪安诊断（300244）领跌

Core Points - The Biotech Economy Index (970038) closed at 2121.91 points, down 0.32%, with a trading volume of 11.12 billion yuan and a turnover rate of 0.9% [1] - Among the index constituents, 17 stocks rose while 32 fell, with Yifan Pharmaceutical leading the gainers at 6.11% and Dean Diagnostics leading the decliners at 2.62% [1] Index Constituents Summary - The top ten constituents of the Biotech Economy Index include: - Mindray Medical (sz300760) with a weight of 12.58% and a market cap of 241.88 billion yuan, down 0.56% [1] - Changchun High-tech (sz000661) with a weight of 4.87% and a market cap of 40.90 billion yuan, up 1.30% [1] - Yishao Dianyi (sz002252) with a weight of 4.74% and a market cap of 44.01 billion yuan, up 0.30% [1] - Kanglong Chemical (sz300759) with a weight of 4.55% and a market cap of 51.28 billion yuan, down 0.55% [1] - Tigermed (sz300347) with a weight of 4.54% and a market cap of 41.59 billion yuan, down 1.02% [1] - Deep Technology (sz000021) with a weight of 4.16% and a market cap of 37.41 billion yuan, down 0.75% [1] - Muyuan Food (sz002714) with a weight of 3.62% and a market cap of 266.58 billion yuan, down 0.67% [1] - Lepu Medical (sz300003) with a weight of 3.19% and a market cap of 29.13 billion yuan, up 0.38% [1] - Aesthetic Care (sz300896) with a weight of 3.16% and a market cap of 43.48 billion yuan, down 0.94% [1] - Yuyue Medical (sz002223) with a weight of 3.07% and a market cap of 36.12 billion yuan, up 0.59% [1] Capital Flow Analysis - The Biotech Economy Index constituents experienced a net outflow of 359 million yuan from institutional investors, while retail investors saw a net inflow of 241 million yuan [3] - Notable capital flows include: - Yifan Pharmaceutical (002019) with a net inflow of 75.07 million yuan from institutional investors [3] - Hualan Biological (002007) with a net inflow of 9.99 million yuan from retail investors [3] - Muyuan Food (002714) with a significant net inflow of 766.06 million yuan from retail investors despite a net outflow of 81.87 million yuan from institutional investors [3] Index Adjustment Summary - Recent adjustments to the Biotech Economy Index included the addition of 9 stocks and the removal of 9 stocks [4] - Newly added stocks include: - Chaoyan Co. (301602) with a market cap of 9.78 billion yuan [4] - Kanghua Biotechnology (300841) with a market cap of 10.63 billion yuan [4] - Yingke Medical (300677) with a market cap of 28.22 billion yuan [4] - Stocks removed from the index include: - Wens Foodstuff Group (300498) with a market cap of 120.30 billion yuan [4] - Hongri Pharmaceutical (300026) with a market cap of 11.08 billion yuan [4]