今日涨跌停股分析：122只涨停股、2只跌停股，CPO概念走强，锐捷网络、剑桥科技等涨停

Group 1 - A-shares experienced significant activity on August 18, with 122 stocks hitting the daily limit up and only 2 stocks hitting the limit down [1] - The securities IT concept was notably active, with stocks like Dazhihui achieving consecutive limit ups [1] - The CPO concept saw strong performance, with stocks such as Ruijie Network and Cambridge Technology reaching limit up [1] - The liquid cooling IDC concept also rose, with Dayuan Pump Industry achieving 6 consecutive limit ups, and other stocks like Jintian and Feilong achieving 4 consecutive limit ups [1] Group 2 - Longcheng Military Industry achieved 8 limit ups in 13 days, while *ST Aowei had 8 limit ups in 9 days [1] - Jishi Media recorded 7 limit ups in 11 days, and *ST Huahong had 6 consecutive limit ups [1] - Other notable stocks include Huasheng Tiancai with 5 limit ups in 8 days and Tongzhou Electronics with 5 limit ups in 6 days [1] Group 3 - *ST Gaohong faced a continuous decline with 6 consecutive limit downs, and Wantong Development also hit the limit down [2]