Japan Stock of the Day | Kabutaro & Friends

On October 8, 2026, the most talked-about Japanese stock online was Sankyo Tateyama <5932>.
Background: Investors welcomed the results for the first quarter (June to August) of the fiscal year ending May 2027, announced on October 7 by the major aluminum building materials maker. Revenue rose 13.3% year over year to 97.268 billion yen, and the company swung to an operating profit of 2.641 billion yen (versus a loss of 1.164 billion yen a year earlier) and an ordinary profit of 2.42 billion yen (versus a loss of 1.2 billion yen). Ordinary profit already exceeded the full-year plan of 1.5 billion yen, a progress rate of 161.9%. Higher selling prices linked to aluminum ingot prices, price increases, currency effects in overseas operations, and cost cuts contributed. In response, buying flowed into the stock on October 8, and it closed up 100 yen (+15.90%) at 729 yen, the top gainer on the Tokyo Stock Exchange Prime Market. The gain came even as the Nikkei Stock Average fell sharply by 993 yen.