Stocks
Japan Market Close: Nikkei Average Surges, Semiconductor Stocks Lead the Market 日本市場引け: 日経平均が大幅反発、半導体関連株が市場を牽引
The Tokyo stock market on October 27th saw the Nikkei Average rebound significantly for the first time in four days, breathing life back into the market. A buyback of AI-related stocks in the US market the previous day provided a tailwind, with semiconductor-related stocks, in particular, driving the overall market rise. With major companies' earnings announcements on the horizon, it was a day of improved investor risk sentiment.
The Nikkei Average closed at 63,268.37 yen, up 1,078.72 yen from the previous day. This marked a substantial increase of 1.73%, a strong move that reversed the downward trend of the past four consecutive trading sessions. The Tokyo Stock Price Index (TOPIX) also rose 24.39 points, or 0.61%, to 3,997.37. The background to this was the pause in the global adjustment of AI-related stocks since the previous weekend, leading to a sense of relief among investors for buying.
Semiconductor-related stocks were the main drivers of the market. Advantest, in particular, stood out by pushing the Nikkei Average up by 638.61 yen as of 3 PM. The filing of paperwork for an Initial Public Offering (IPO) by AI development company Anthropic in the US market the previous day fueled investment expectations in the AI sector, continuing the trend of a significant 2.8% rise in the Philadelphia Semiconductor Index (SOX Index). Advantest is scheduled to announce its interim financial results for the fiscal year ending March 2027 on the 28th, and expectations for strong earnings are considered one of the factors boosting the market.
Among individual stocks, Otake (7434) announced an update on its initiatives to achieve management that is conscious of capital costs and stock prices. The company expects consolidated ordinary income for the fiscal year ending May 2026 to be 1.36 billion yen, a 12.4% increase from the previous year, and for the fiscal year ending May 2027, it forecasts a 0.6% increase to 1.37 billion yen, projecting revenue and profit growth for six consecutive periods, confirming solid performance. Furthermore, Dainippon Toryo (4611) sharply rose after revising its consolidated earnings forecast for the fiscal year ending March 2027 upwards, with operating profit expected to reach a record high for the first time in nine years and ordinary profit for the first time in ten years. Data Section (3905) also saw a three-day consecutive limit-up, announcing the launch of AI infrastructure and GPU compute services, demonstrating strong interest in AI-related theme stocks.
In the Tokyo foreign exchange market today, the dollar-yen pair traded around 157.70 yen to the dollar, continuing the trend of yen depreciation. Amidst adjustments in positions ahead of central bank meetings in Japan, the US, and Europe, the significant rebound in the Nikkei Average and observations of actual demand for dollars by import companies supported the weaker yen and stronger dollar.
The market is closely watching upcoming corporate earnings announcements, which are set to intensify, and key events such as the US Federal Open Market Committee (FOMC) meeting this week. In particular, the performance trends of AI-related companies and remarks regarding monetary policy will be crucial factors in determining the future direction of the market.
Sources: yahoo.co.jp, minkabu.jp, kabutan.jp, investing.com10月27日の東京株式市場は、日経平均株価が4日ぶりに大幅に反発し、市場は活気を取り戻しました。前日の米国市場でのAI関連株の買い戻しが追い風となり、特に半導体関連銘柄が市場全体の上昇を牽引しました。主要企業の決算発表を控える中、投資家のリスクセンチメントが改善した一日となりました。
本日の日経平均株価は、前日比1,078円72銭高の63,268円37銭で取引を終えました。これは1.73%の大幅な上昇となり、4営業日続落していた地合いを一変させる強い動きとなりました。東証株価指数（TOPIX）も24.39ポイント高の3,997.37と、0.61%の上昇を見せています。前週末からの世界的なAI関連株の調整が一服し、投資家の買い安心感が広がったことが背景にあります。
市場の主要な牽引役となったのは半導体関連株です。特にアドバンテストは、15時時点で日経平均を638円61銭押し上げるなど、その貢献が際立ちました。前日の米国市場でAI開発企業アンソロピックが新規株式公開（IPO）に向けた書類を提出したことで、AI分野への投資期待が高まり、フィラデルフィア半導体株指数（SOX指数）が2.8%高と大幅に上昇した流れを引き継ぎました。アドバンテストは明日28日に2027年3月期中間期決算発表を控えており、好決算への期待も相場を押し上げた要因の一つと考えられます。
個別銘柄では、オータケ（7434）が資本コストや株価を意識した経営の実現に向けた対応についてアップデートを発表しました。同社は2026年5月期の連結経常利益が前期比12.4%増の13億6000万円となり、2027年5月期も前期比0.6%増の13億7000万円と6期連続の増収増益を見込むなど、堅調な業績が確認されています。また、大日本塗料（4611）は2027年3月期の連結業績予想を上方修正し、営業利益が9期ぶり、経常利益が10期ぶりに過去最高益を更新する見通しとなったことで急騰しました。データセクション（3905）もAIインフラおよびGPUコンピュートサービスの提供開始を発表し、3営業日連続でストップ高を記録するなど、AI関連のテーマ株への関心の高さが示されました。
本日の東京外国為替市場では、ドル円相場が1ドル＝157円70銭台で推移し、円安傾向が続きました。日米欧の中央銀行会合を控えて持ち高調整の動きが主体となる中で、日経平均株価の大幅反発や輸入企業による実需のドル買い観測が円安・ドル高を支援しました。
市場はこれから本格化する企業決算発表や、週内に開催される米連邦公開市場委員会（FOMC）などの主要イベントを注視しています。特にAI関連企業の業績動向や、金融政策に関する発言が、今後の市場の方向性を決定づける重要な要素となるでしょう。
出典: yahoo.co.jp, minkabu.jp, kabutan.jp, investing.com
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Comments 2
Japan's Nikkei is certainly climbing today, but honestly, I'm more focused on how our tech stocks will shake out this week after that earnings rush. Gotta see if we can get some of that semiconductor energy here.
Japan is also feeling the semiconductor tailwinds. Wish we could get some of that too lol일본도 반도체 훈풍이네. 우리도 좀 이랬으면 좋겠다 ㅋㅋ