芬太尼概念涨4.74%，主力资金净流入这些股

Group 1 - The fentanyl concept index rose by 4.74%, ranking 6th among concept sectors, with 8 stocks increasing in value, including Botao Bio which hit a 20% limit up [1] - The leading stocks in the fentanyl sector included Dongfang Bio, Lingrui Pharmaceutical, and ST Renfu, which rose by 5.12%, 4.88%, and 2.26% respectively [1] Group 2 - The fentanyl concept sector saw a net inflow of 55 million yuan, with ST Renfu leading the inflow at 69.89 million yuan, followed by Guoyao Shares, Guoyao Modern, and Lingrui Pharmaceutical [2] - The net inflow ratios for ST Renfu, Guoyao Modern, and Guoyao Shares were 14.70%, 7.69%, and 5.96% respectively, indicating strong interest from major funds [3]