互联网电商板块12月12日涨0.04%，新迅达领涨，主力资金净流入2105.5万元

Group 1 - The internet e-commerce sector increased by 0.04% compared to the previous trading day, with Xin Xun Da 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] - A table detailing the individual stock performance within the internet e-commerce sector was provided [1] Group 2 - The net inflow of main funds into the internet e-commerce sector was 21.055 million yuan, while speculative funds saw a net inflow of 9.6493 million yuan [2] - Retail investors experienced a net outflow of 30.7043 million yuan [2] - A table showing the fund flow for individual stocks in the internet e-commerce sector was included [2]