In Japan’s domestic stock market on 22 October, buying intensified, particularly in cybersecurity-related stocks, following the disclosure of a PHP vulnerability, while the Nikkei 225 widened its decline into the afternoon session. The report also covers individual stock movements on the Prime Market, including the top gainers and decliners.
The Nikkei 225 fell sharply from the previous day on 22 October. Recruit Holdings and other stocks ranked among the largest positive contributors, while selling intensified mainly in AI and semiconductor-related stocks, widening the decline into the afternoon session. Globally, the disclosure of a serious vulnerability in the PHP programming language was also reported, raising concerns about cyberattacks and weighing on investor sentiment.
Trading volume on the TSE Prime Market was 2.191 billion shares, with trading value of ¥7.056994 trillion, both up from the previous day. HENNGE, Trend Micro and SHIFT were among the top gainers, while Resonac Holdings, Double Scope and Meiko were among the biggest decliners.
The Nikkei 225 closed at ¥62,907.84. Among Nikkei 225 constituents, 81 stocks rose, 141 fell and 3 were unchanged. A total of 47 stocks reached new year-to-date highs, while 23 reached new year-to-date lows.