A股异动丨实控人被留置，科思科技大跌超13%

Group 1 - The core point of the article is that Kesi Technology (688788.SH) experienced a significant drop in stock price, reaching a limit down of 20%, following news of its actual controller and director Liu Jiande being placed under investigation [1] - Kesi Technology's current stock price is reported at 77.26 yuan, reflecting a decline of 13.24%, with a total market capitalization of 12.136 billion yuan [1] - The company specializes in command and control information processing equipment and systems, software radar information processing equipment and systems, and intelligent unmanned devices and systems [1] Group 2 - Kesi Technology has been referred to as the "Chinese version of Palantir" in the military industry this year, indicating its growing recognition and potential in the sector [1] - The investigation into Liu Jiande involves a notice of detention and a case filing from a national supervisory committee, which prevents him from fulfilling his duties as a director [1]