KLA Corporation (KLAC)

Process control / inspection-metrology monopoly — yield management for advanced chips

AI exposure 41% — derived from reported segment revenue, not asserted.

Where it sits

Silicon Layer → Semiconductor Equipment · figures rebased to FQ4 FY2026, reported 2026-07-28

Wafer/reticle inspection + metrology systems (yield management) — dominant leads 2 businesses in this sub-tier that together are 100% of revenue, so Semiconductor Equipment is effectively the whole company rather than one leg of it.

Reported segments

• Semiconductor Process Control — 89% of revenue
• Specialty Semiconductor + PCB/Display/Component — 11% of revenue

KLA ($3.66B Q4 FY2026, +15% YoY, +7% sequential; FY2026 $13.58B). Semiconductor Process Control 89% ($3,257M, +13%) = primary B1 Semiconductor Equipment — wafer and reticle inspection and metrology, with foundry and logic at 79% of system revenue and memory 21% (DRAM about 90% of that); Specialty Semiconductor plus PCB, display and component inspection 11%. Services revenue of $820M (+17%) is a cross-cutting figure spanning both segments and is NOT added into the 100. Advanced packaging revenue rose about 70% and KLA lifted its 2026 WFE outlook to $150B.

How the 41% is built

• Semiconductor Process Control — 89% of revenue × 45% AI-driven (disclosed). Yield control is most valuable at the advanced nodes where AI logic and HBM DRAM are built, but the same tools inspect the whole leading and trailing edge
• Specialty Semiconductor + PCB/Display/Component — 11% of revenue × 5% AI-driven (estimate). PCB, display and component inspection serve consumer electronics rather than AI infrastructure

Investment read

Moat. Near-monopoly in process-control (inspection/metrology) — yield is everything at advanced nodes, and KLA has no real competitor at the leading edge.

Bottleneck / pricing power. High pricing power — no rival at the leading edge of inspection and metrology — compounded by a service annuity across >57,000 installed tools at 4,000+ sites, ~95% renewal, $820M in FQ4 FY2026. The binding constraints are external rather than competitive: China was ~34% of revenue with export controls already quantified at a $300-350M CY2026 headwind, and DRAM pricing is a gross-margin drag the CFO expects to persist through 2027.

Role in the AI stack. The yield/process-control layer — makes advanced-node manufacturing economical.

Connected companies

• Taiwan Semiconductor (TSM) — KLAC supplies: process control / inspection
• Intel (INTC) — KLAC supplies: process control for Intel fabs
• Applied Materials (AMAT) — KLAC competes with: Process-control/inspection overlap — KLA dominant (~74%), AMAT the distant #2 (~10%)
• Onto Innovation (ONTO) — KLAC competes with: process control — Onto (metrology/inspection specialist) vs KLA (category leader)
• Sandisk (SNDK) — KLAC supplies: process control/inspection for NAND fabs
• Hitachi (HTHIY) — KLAC competes with: semiconductor metrology/inspection — Hitachi High-Tech vs KLA
• ASML Holding (ASML) — KLAC competes with: overlap only in metrology/e-beam inspection (ASML YieldStar/HMI vs KLA); otherwise complementary litho vs process-control
• GlobalFoundries (GFS) — KLAC supplies: process control/inspection for GlobalFoundries
• Ultra Clean Holdings (UCTT) — KLAC is supplied by: Qualified subsystems/precision-components supplier to KLA process-control tools (WFE customer)
• Tower Semiconductor (TSEM) — KLAC supplies: Process control and inspection for Tower's fabs
• Samsung Electronics (SSNLF) — KLAC supplies: Named as a customer in KLAC's value chain: Purchases KLA defect inspection systems for leading-edge logic and memory fabs
• SK Hynix (SKHY) — KLAC supplies: Named as a customer in KLAC's value chain: Buys KLA metrology tools for DRAM and NAND process control
• Micron Technology (MU) — KLAC supplies: Named as a customer in KLAC's value chain: Uses KLA inspection equipment to ensure yield in DRAM and 3D NAND
• Coherent (COHR) — KLAC is supplied by: Named as a supplier in KLAC's value chain: Supplies laser sources used in KLA optical inspection systems

Others in Semiconductor Equipment

• ASML Holding (ASML)
• Lam Research (LRCX)
• Applied Materials (AMAT)
• Teradyne (TER)
• Onto Innovation (ONTO)
• Ultra Clean Holdings (UCTT)
• Entegris (ENTG)

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