宠物经济板块1月28日跌1.15%，万孚生物领跌，主力资金净流出3.4亿元

Group 1 - The pet economy sector experienced a decline of 1.15% compared to the previous trading day, with Wanfu Biotech leading the drop [1] - On the same day, the Shanghai Composite Index closed at 4151.24, up by 0.27%, while the Shenzhen Component Index closed at 14342.9, up by 0.09% [1] - The net outflow of main funds in the pet economy sector was 340 million yuan, while retail investors saw a net inflow of 300 million yuan [1] Group 2 - The pet economy sector saw a net inflow of 40.39 million yuan from speculative funds [1] - Detailed fund flow data for individual stocks in the pet economy sector is available in the accompanying table [1]