软件开发板块12月15日跌1.31%，品茗科技领跌，主力资金净流出10.12亿元

Group 1 - The software development sector experienced a decline of 1.31% on December 15, with Pingming Technology 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 software development sector was provided [1] Group 2 - The software development sector saw a net outflow of 1.012 billion yuan from major funds, while retail investors contributed a net inflow of 960 million yuan [2] - The net inflow from speculative funds was 51.8762 million yuan [2] - A table showing the fund flow for individual stocks in the software development sector was included [2]