光线传媒今日20cm跌停，首创证券北京五道口证券营业部净卖出2.17亿元

Group 1 - The stock of Light Media experienced a 20% drop, reaching the daily limit down [1] - The trading volume was 6.598 billion yuan, with a turnover rate of 10.76% [1] - After-hours trading data shows that the Shenzhen Stock Connect bought 130 million yuan and sold 407 million yuan, indicating significant selling pressure [1] Group 2 - One institutional seat recorded a net sell of 21.2 million yuan [1] - The Beijing Wudaokou Securities Office of CICC net sold 217 million yuan [1]