芬太尼概念涨1.47%，主力资金净流入6股

Core Viewpoint - The fentanyl concept sector has seen a 1.47% increase, ranking fourth among concept sectors, with notable stock performances from companies like Dongfang Biology, Yirui Biology, and Botuo Biology [1] Market Performance - As of March 19, the fentanyl concept sector had six stocks rising, with Dongfang Biology up by 7.15%, Yirui Biology by 4.67%, and Botuo Biology by 1.20% [1] - Conversely, Wanfu Biology, Lingrui Pharmaceutical, and Enhua Pharmaceutical experienced declines of 0.50%, 0.29%, and 0.22% respectively [1] Capital Flow - The fentanyl concept sector attracted a net inflow of 0.65 billion yuan from major funds, with six stocks receiving net inflows [1] - Renfu Pharmaceutical led the net inflow with 35.36 million yuan, followed by Dongfang Biology with 25.74 million yuan, Yirui Biology with 16.10 million yuan, and Guoyao Co. with 2.24 million yuan [1] Inflow Ratios - The net inflow ratios were highest for Renfu Pharmaceutical at 6.47%, Yirui Biology at 6.23%, and Dongfang Biology at 5.59% [1]