Semiconductor Manufacturing
Sumco Corporation
A major Japanese silicon wafer manufacturer, alongside GlobalWafers one of the primary global suppliers of the raw silicon substrate underlying all modern chip manufacturing. SUMCO shelved a planned greenfield wafer plant in Saga, Japan to prioritize AI-grade output, as leading-edge 300mm wafers for AI logic and high-bandwidth memory now make up roughly 20% and rising of its 300mm revenue and remain supply-constrained, even as Q1 2026 sales of ¥101.4 billion came with an operating loss of ¥5.2 billion amid continued weakness in smaller wafer sizes.
Sources
Every claim traced to a primary source — evidence, recent activity, and insider filing behavior, all in one place.
Evidence
2 sources · 73% avg. source confidence
- PrivateMarketsNews / TrendForce — SUMCO prioritizes AI-grade wafer output as leading-edge 300mm demand tightens72% source confidence
- Investing.com (Q1 2026 earnings call transcript) — SUMCO posts Q1 2026 operating loss as AI-related 300mm demand offsets weak mature-node sales74% source confidence
Dependency Map
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The Story So Far (last 6 months)
Auto-generated from this entity's dated milestones, relationship updates, and sourced evidence — not AI-written, just sorted.