广告营销板块12月11日跌3.13%，新华都领跌，主力资金净流出22.5亿元

Group 1 - The advertising and marketing sector experienced a decline of 3.13% on December 11, with Xinhua leading the drop [1] - The Shanghai Composite Index closed at 3873.32, down 0.7%, while the Shenzhen Component Index closed at 13147.39, down 1.27% [1] - A detailed table of individual stock performance within the advertising and marketing sector was provided [1] Group 2 - The net outflow of main funds in the advertising and marketing sector was 2.25 billion yuan, while retail investors saw a net inflow of 2.169 billion yuan [2] - The net inflow of speculative funds was 81.1 million yuan [2] - A table detailing the fund flow for individual stocks in the advertising and marketing sector was included [2]