Furukawa Electric
5801.THIGHOptical Fiber / HTS Superconductor / Fusion · Weight: 18%· Data as of 2026-05-13
Investment Thesis
DUAL-engine photonics + fusion play with the strongest YoY profit recovery in the theme (NI +413% in FY25). Lightera subsidiary started mass production of 13,824-count optical fiber cable in March 2026 — 'one of world's highest fiber densities' for hyperscale data centers (2x existing capacity, <40mm diameter). SuperPower Inc. (US subsidiary) is one of world's 2-3 leading producers of REBCO HTS tape — signed HTS wire supply agreement with Tokamak Energy for ST80-HTS fusion prototype (2023). Goldman Sachs upgraded to Buy with ¥23,000 target. Cross-theme exposure to nuclear/fusion. Stock +949% 52w but Fwd PE 49 vs TTM 58 = earnings growth visible.
Risk
Same AP01 risk as Fujikura — stock +949% 52w on PE 58x. HTS REBCO production faces competition from American Superconductor. Hyperscale fiber demand could plateau if CPO adoption slower than projected. Goldman target ¥23,000 vs current price ¥50,430 implies stock has overshot — discount the price target as a relative-strength signal not absolute fair value.
Monitoring Trigger
If Tokamak Energy or Commonwealth Fusion Systems announce additional HTS REBCO procurement, upgrade conviction. If 13,824-count fiber cable wins named hyperscale design wins, upgrade. If FY27 NI growth guidance < 30% YoY, trim — the +413% bounce is not sustainable.
Key Dates
Key Metrics
Business Segments
| Segment | Revenue | Share | Description |
|---|---|---|---|
| Infrastructure (optical fiber, cable) | Major | Major | Optical fiber cable, FTTH, hyperscale data center fiber (Lightera 13,824-count), submarine cable. |
| Electronics & automotive components | Moderate | Moderate | Wire harnesses, connectors, batteries. |
| Functional materials (incl. SuperPower HTS) | Smaller | Smaller | REBCO HTS tape, copper foil, specialty alloys. |
Supply Chain Evidence
| Evidence | Customer | Product | Detail |
|---|---|---|---|
| confirmed | Hyperscale data centers (via Lightera 13824-count fiber) | Ultra-high-density optical fiber cable | Lightera (Furukawa subsidiary) started mass production March 2026 — 13,824-count optical fiber cable, world's highest fiber density, designed for hyperscale data centers.[source](2026-03) |
| confirmed | Tokamak Energy (UK fusion) | REBCO HTS tape for ST80-HTS advanced prototype | SuperPower Inc. (Furukawa US subsidiary) signed HTS wire supply agreement 2023 for Tokamak Energy fusion compact tokamak.[source](2023) |
| probable | Data center operators (global) | Comprehensive data center cable + connectivity solutions | Furukawa Data Center Solutions division targets hyperscale and enterprise data center buildouts.[source](2025) |
| probable | ITER (international fusion project) | Superconducting cables for fusion magnets | Long-running supplier to fusion R&D community; specific ITER contract details not all public.[source](Multi-year) |
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 |