Lasertec Corporation
6920.THIGHInspection / EUV Mask · Weight: 20%· Data as of 2026-05-15
Investment Thesis
Near-100% global market share in EUV mask defect inspection — the canonical Japanese MONOPOLY in semi-photonics. Launched world's first EUV mask blank inspection (2017), world's first actinic ACTIS system using 13.5 nm working light (2019), ACTIS A300 for high-NA EUV (2023). Confirmed customers: TSMC, Intel, Samsung — the only three companies running EUV at scale. As Intel 18A, Samsung SF2, and TSMC N2 ramp through 2026-2027, every new EUV-printed mask must pass through a Lasertec system. The de facto pair to ASML — without Lasertec inspection, ASML EUV scanners ship 'blind'. This is the strongest single moat in the entire light theme.
Risk
Highest valuation in the theme (PE 44x / Fwd 41x) on stock +257% 52w. AP01 peak-earnings flag: revenue +18% and NI +26% YoY at trailing peak. High customer concentration (3 customers = 90%+ of revenue) means any one of TSMC/Samsung/Intel cutting EUV capex hits hard. NNVT-style Chinese alternative does not exist for actinic EUV mask inspection (the moat is real), but next-gen process changes could narrow it.
Monitoring Trigger
If TSMC N2 mass production milestones slip beyond 2027, watch order intake. If High-NA EUV (TWINSCAN EXE:5000) deployment accelerates faster than expected at Intel, ACTIS A300 orders are a direct beneficiary — upgrade weighting. If quarterly book-to-bill drops below 1.0x for two consecutive quarters, trim.
Key Dates
Key Metrics
Business Segments
| Segment | Revenue | Share | Description |
|---|---|---|---|
| Semiconductor inspection | ¥250B+ | ~99% | EUV mask blank inspection, actinic patterned mask inspection (ACTIS A300), DUV inspection. |
Supply Chain Evidence
| Evidence | Customer | Product | Detail |
|---|---|---|---|
| confirmed | TSMC | EUV mask blank inspection systems + ACTIS actinic patterned mask inspection | Named customer with TSMC, Intel, Samsung as Lasertec's primary EUV customers per Senrigan analysis. Lasertec is the de facto exclusive supplier paired with ASML EUV scanners.[source](2025-09) |
| confirmed | Intel | EUV mask blank inspection + ACTIS | Intel 18A and successor nodes require Lasertec EUV mask inspection. Intel high-NA EUV adoption supports ACTIS A300 demand.[source](2025-09) |
| confirmed | Samsung Electronics | EUV mask blank inspection + ACTIS | Samsung Foundry SF2 GAA process uses EUV; Lasertec inspection is mandatory step.[source](2025-09) |
| probable | ASML (indirect — paired tool) | EUV ecosystem complement | ASML EUV scanners require Lasertec mask inspection — products are paired in customer workflows. Lasertec named ASML as paired tool partner in IR materials.[source](2024) |
| probable | TSMC COUPE photonic IC masks | EUV mask blank inspection + ACTIS actinic patterned mask inspection for 200Gbps MRM photonic die masks | TSMC COUPE EIC dies produced on N4P/N3 advanced node, EUV-printed, mandatory Lasertec inspection. SoIC-X 3D hybrid bonding requires bond-pad alignment depending on precision mask quality. Volume production 2026.[source](2026-05-15) |
Sources & References
Peer Comparison
| Company | PE | Fwd PE | ROE | Op Margin | FCF |
|---|---|---|---|---|---|
| Hamamatsu Photonics | 50.4 | 42.5 | N/A | 17.8% | N/A |
| Lasertec Corporation | 44.1 | 41.1 | N/A | N/A | N/A |
| USHIO INC. | 59.6 | 29.6 | N/A | N/A | N/A |
| Fujikura | 87.7 | 84.2 | 24.4% | N/A | N/A |
| Furukawa Electric | 65.7 | 65.8 | N/A | N/A | N/A |
| Sumitomo Electric Industries | 34 | 23.9 | N/A | N/A | N/A |
| HORIBA | 27.5 | 23.7 | N/A | N/A | N/A |
| Mitsubishi Electric | 32.5 | 27.5 | N/A | N/A | N/A |
| Anritsu Corporation | 45.4 | 37.5 | N/A | N/A | N/A |
| NTT, Inc. | 11.9 | 11.6 | N/A | N/A | N/A |
| Fujitsu Limited | 18.9 | 19 | N/A | N/A | N/A |
| NEC Corporation | 19.95 | 18.2 | N/A | N/A | N/A |
| DISCO Corporation | 56 | 42.6 | N/A | N/A | N/A |
| TOWA Corporation | 45.2 | 24 | N/A | N/A | N/A |