The top 20 TOPIX100 constituents that announced earnings between 4 December 2025 and 16 February 2026 were ranked by the percentage change in their share prices, comparing the closing prices on the announcement date and the following day. The top five were Kubota, DISCO, Ajinomoto, Sumitomo Electric Industries and TDK.
Earnings announcements by Japanese companies for the October–December 2025 quarter have largely concluded, with the period covered running from 4 December 2025 to 16 February 2026. The companies covered were TOPIX100 constituents, ranked by the percentage change in their share prices based on the closing prices on the earnings announcement date and the following day.
The top five were 1. Kubota, 2. DISCO, 3. Ajinomoto, 4. Sumitomo Electric Industries and 5. TDK. For companies that announced earnings during trading hours, the closing price on the day before the announcement was compared with the closing price on the announcement day.
Electrical equipment companies accounted for a large share of the rankings by industry. The overall results are said to have been influenced by a recovery in technology-related demand, tight supply related to 3-nanometre technology, and a recovery in demand for automotive and industrial equipment.
The article presents a ranking and commentary prepared by Nomura Securities' Investment Information Department based on information from Bloomberg.