A股持续走强！北证50涨超5%，数字人、利通科技、三祥科技涨超20%，北交所董事长鲁颂宾：加快推出北证50ETF

Group 1 - The core viewpoint of the article highlights the strong performance of stocks on the Beijing Stock Exchange, with the Beizheng 50 Index rising over 5% [1] - Notable stocks such as Digital People, Litong Technology, and Sanxiang Technology have shown significant gains [1] - The Chairman of the Beijing Stock Exchange, Lu Songbin, announced plans to continuously optimize the index system and accelerate the launch of the Beizheng 50 ETF [1] Group 2 - The introduction of after-hours fixed price trading is being researched to enhance trading convenience for investors [1] - The overall focus is on improving investment and trading accessibility on the Beijing Stock Exchange [1]