午间涨跌停股分析：58只涨停股、11只跌停股，影视院线板块活跃，博纳影业、欢瑞世纪涨停

Group 1 - A-shares experienced significant activity with 58 stocks hitting the daily limit up and 11 stocks hitting the limit down on October 31 [1] - The film and cinema sector showed strong performance, with companies like Bona Film Group and Huanrui Century reaching the daily limit up [1] - AI-related stocks also gained momentum, with Vision China and Rongxin Culture hitting the daily limit up [1] Group 2 - ST Zhongdi (rights protection) achieved an impressive 11 consecutive limit up days, while Pingtan Development recorded 8 limit up days in 11 days [1] - Other notable stocks include ST Keli Da (rights protection) with 5 limit up days in 8 days, and ST Xinhuajin (rights protection) with 5 consecutive limit up days [1] - Several stocks, including ST Yuancheng (rights protection), faced continuous declines, with 15 consecutive limit down days [2]