软件开发板块12月23日跌1.02%，广道退领跌，主力资金净流出18.73亿元

Group 1 - The software development sector experienced a decline of 1.02% on December 23, with Guangdao leading the drop [1] - The Shanghai Composite Index closed at 3919.98, reflecting a slight increase of 0.07%, while the Shenzhen Component Index closed at 13368.99, up by 0.27% [1] - A detailed table of individual stock performance within the software development sector is provided [1] Group 2 - The net outflow of main funds from the software development sector amounted to 1.873 billion yuan, while retail investors contributed a net inflow of 1.211 billion yuan [2] - The net inflow from speculative funds was recorded at 663 million yuan [2] - A detailed table of fund flows for individual stocks in the software development sector is included [2]