Corporate News – Sumco Corporation
Market Performance
Sumco (ticker 3436.T) closed the trading session at JPY 2,579.5 on Wednesday, 21 October 2026, reflecting a –1.61 % decline from the previous close.
- 24‑hour volume: JPY 28.5 bn
- Current share supply: 355.5 million
- Market capitalization: JPY 945.3 bn
Over the last 24 hours, Sumco’s shares traded –12.17 % compared with the previous month‑end value. The 200‑day simple moving average is JPY 2,804.24. Historical price extremes:
- 52‑week high: JPY 5,939 (13 July 2026)
- 52‑week low: JPY 1,131 (21 November 2025)
Recent Corporate Activity
No company‑specific announcements were issued during the period. Sumco’s share price movement was part of a broader rebound in technology names, contributing to an upward tilt in the Nikkei index following a recent decline.
Related Stock Activity
| Ticker | 24‑hour change | Current price (JPY) | Market cap (JPY) | P/E ratio |
|---|---|---|---|---|
| 5411.T (Jfe) | –0.32 % | 1,739.5 | 1.1 trillion | 12.17 |
| 3092.T (Zozo) | +0.70 % | 1,215.5 | 1.1 trillion | 22.24 |
| 8334.T (Gunma Bank /The) | –0.09 % | 2,679 | 1.1 trillion | 16.94 |
| 6869.T (Sysmex) | –0.84 % | 1,960.5 | 1.1 trillion | 28.72 |
| 6841.T (Yokogawa Electric) | –0.36 % | 4,677 | 1.1 trillion | 20.53 |
Company Profile
Sumco Corporation is headquartered in Tokyo, Japan, and specializes in the manufacturing of high‑purity silicon wafers for the semiconductor industry. The company supplies wafers and related products to global customers and operates in several international markets. Sumco was listed on the Tokyo Stock Exchange following its initial public offering on 17 November 2005. Further information is available on the company’s website at www.sumcosi.com .
