焦炭板块12月12日涨0.27%，安泰集团领涨，主力资金净流入1851.49万元

Group 1 - The core viewpoint of the article highlights that the coke sector experienced a slight increase of 0.27% on December 12, with Antai Group leading the gains [1] - The Shanghai Composite Index closed at 3889.35, up by 0.41%, while the Shenzhen Component Index closed at 13258.33, up by 0.84% [1] Group 2 - In terms of capital flow, the coke sector saw a net inflow of 18.51 million yuan from main funds, while retail funds experienced a net inflow of 10.73 million yuan [2] - Conversely, there was a net outflow of 29.24 million yuan from speculative funds within the coke sector [2]