格隆汇8月21日｜京北方(002987.SZ)今日涨停，换手率17.16%，成交额36.11亿元。龙虎榜数据显示，深 股通买入1.95亿元，卖出1861万元，净买入1.76亿元；游资"量化打板"位列买三席位，净买入6663万 元；"作手新一"位列买四席位，净买入6295万元；"城管系"位列买五席位，净买入5370万元。(格隆汇) 【免责声明】本文仅代表作者本人观点，与和讯网无关。和讯网站对文中陈述、观点判断保持中立，不对所包含内容 的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考，并请自行承担全部责任。邮箱： news_center@staff.hexun.com (责任编辑：宋政 HN002) ...

Summary of Key Points Core Viewpoint - Guangxun Technology (002281.SZ) experienced a trading halt with a limit-up increase, achieving a turnover rate of 10.86% and a transaction volume of 4.857 billion yuan [1]. Trading Activity - The net buying from the Shenzhen Stock Connect amounted to 123 million yuan, with purchases totaling 299 million yuan and sales of 176 million yuan [1]. - The top buying institution was Guotai Junan Securities, which net bought 120 million yuan [1]. - Overall, the top five buying institutions collectively purchased 584 million yuan and sold 352 million yuan, resulting in a net buying of 231 million yuan [1]. Detailed Trading Data - The top five buying institutions included: 1. Shenzhen Stock Connect Special Account: 299.25 million yuan bought, 175.84 million yuan sold, net 123.41 million yuan [1]. 2. Guotai Junan Securities, Shanghai Jing'an District: 119.93 million yuan bought, no sales, net 119.87 million yuan [1]. 3. Kaiyuan Securities, Xi'an: 54.49 million yuan bought, 0.25 million yuan sold, net 54.24 million yuan [1]. 4. Institutional Special Account: 54.16 million yuan bought, no sales, net 54.16 million yuan [1]. 5. Guoyuan Securities, Hangzhou: 52.48 million yuan bought, 0.06 million yuan sold, net 52.47 million yuan [1]. - The top five selling institutions included: 1. Shenzhen Stock Connect Special Account: 299.25 million yuan bought, 175.84 million yuan sold, net 123.41 million yuan [1]. 2. Institutional Special Account: no purchases, 65.44 million yuan sold, net -65.44 million yuan [1]. 3. Great Wall Securities, Kunming: 0.13 million yuan bought, 37.61 million yuan sold, net -37.48 million yuan [1]. 4. Hualong Securities, Hangzhou: 0.21 million yuan bought, 37.30 million yuan sold, net -35.18 million yuan [1]. 5. Shenwan Hongyuan Securities, Wuhan: 0.11 million yuan bought, 35.76 million yuan sold, net -34.67 million yuan [1].