生物制品板块12月15日跌1.28%，康乐卫士领跌，主力资金净流出4.47亿元

Group 1 - The biopharmaceutical sector experienced a decline of 1.28% on December 15, with Kang Le Wei Shi leading the drop [1] - The Shanghai Composite Index closed at 3867.92, down 0.55%, while the Shenzhen Component Index closed at 13112.09, down 1.1% [1] - A table detailing the individual stock performance within the biopharmaceutical sector was provided [1] Group 2 - The net outflow of main funds from the biopharmaceutical sector was 447 million yuan, while retail funds saw a net inflow of 312 million yuan and speculative funds had a net inflow of 136 million yuan [2] - A table showing the fund flow for individual stocks in the biopharmaceutical sector was included [2]