2月2日生物经济（970038）指数跌2.99%，成份股大北农（002385）领跌

Core Viewpoint - The Biotech Economy Index (970038) experienced a decline of 2.99%, closing at 2139.16 points on February 2, with a total trading volume of 26.538 billion yuan and a turnover rate of 2.97% [1] Group 1: Index Performance - On the day, only 2 out of the index's constituent stocks rose, with Aimeike leading the gain at 1.01%, while 48 stocks fell, with Dabeinong leading the decline at 10.02% [1] Group 2: Capital Flow - The net outflow of main funds from the Biotech Economy Index constituents totaled 1.249 billion yuan, while the net inflow from speculative funds was 262 million yuan, and the net inflow from retail investors was 988 million yuan [2]