SUMCO Corp. Hits Day High with Strong 10.47% Intraday Surge

SUMCO Corp., a mid-cap player in the industrial manufacturing sector, has experienced a significant uptick in its stock price, gaining 10.47% on September 30, 2025. The stock reached an intraday high of JPY 1,586.00, marking a notable performance against the backdrop of the Japan Nikkei 225, which declined by 0.69% on the same day.
Over the past month, SUMCO Corp. has shown a robust increase of 26.51%, outperforming the Nikkei 225's 5.44% gain. However, the company's performance over longer periods reveals a mixed picture, with a slight decline of 0.06% over the past year and a more pronounced drop of 10.3% over the last three years, contrasting sharply with the Nikkei's 70.48% rise during that timeframe.

Financial metrics indicate a return on equity (ROE) of 2.63% and a price-to-book ratio of 0.75, suggesting a valuation that may be attractive relative to its peers. Despite recent gains, SUMCO Corp. has faced challenges, including negative results reported over the last eight quarters and a high debt-equity ratio of 0.48.