12月18日生物经济（970038）指数涨0.41%，成份股迪安诊断（300244）领涨

Group 1 - The core index of the biotechnology sector (970038) closed at 2106.64 points, with an increase of 0.41% and a trading volume of 13.689 billion yuan, resulting in a turnover rate of 1.1% [1] - Among the constituent stocks, 29 companies experienced an increase, with Dean Diagnostics leading the rise at 8.65%, while 18 companies saw a decline, with Yingke Medical leading the drop at 1.59% [1] Group 2 - The net inflow of main funds into the biotechnology index constituents totaled 105 million yuan, while speculative funds saw a net outflow of 259 million yuan, and retail investors had a net inflow of 155 million yuan [2] - In the past 10 days, the biotechnology index constituents underwent adjustments, adding 9 new stocks and removing 9 stocks [2]