轨交设备板块12月19日涨0.47%，雷尔伟领涨，主力资金净流出1.23亿元

Group 1 - The core viewpoint of the news is that the rail transit equipment sector experienced a slight increase of 0.47% on December 19, with Lei Erwei leading the gains [1] - The Shanghai Composite Index closed at 3890.45, up by 0.36%, while the Shenzhen Component Index closed at 13140.22, up by 0.66% [1] Group 2 - In terms of capital flow, the rail transit equipment sector saw a net outflow of 123 million yuan from main funds, while retail investors contributed a net inflow of 109 million yuan [2] - Speculative funds recorded a net inflow of 13.85 million yuan into the sector [2]