Fujikura

5803.THIGH

Optical Fiber / Fusion Splicers / AI Data Center · Weight: 18%· Data as of 2026-05-13

¥5,808-2.73%

6-month daily

Investment Thesis

Optical fiber + #1 globally in fusion splicers (40+ years expertise per company / AFL distributor). The PRIMARY beneficiary of AI hyperscale data center fiber buildout — stock +713% 52w (highest in light theme). Mkt cap ¥12.6T reflects market pricing in CPO and rack-to-rack 400G/800G optical transceiver demand. NI ¥144B on revenue ¥1.12T = solid margins. Direct CPO supply chain link: hyperscale data centers need tens of thousands of low-loss fiber terminations per data hall, driving ribbon-splicer demand (Fujikura 90 Series). 2024 patent for AI-enabled alignment algorithms.

Risk

Stock +713% in 52w = textbook AP01 peak-earnings risk (PE 87.7x TTM). Chinese fusion splicer competitors pressing prices, forcing differentiation through AI features. CPO adoption pace uncertain — IDTechEx projects $20B by 2036 (CAGR 37%) but the ramp from $1-2B 2025 base is what determines near-term P&L. Customer concentration in 5-7 hyperscale operators globally.

Monitoring Trigger

If hyperscale capex commentary at NVIDIA, Meta, Microsoft, Google quarterlies shows AI infra spending re-acceleration, Fujikura is a direct beneficiary. If 800G/1.6T optical transceiver shipments grow >50% YoY, splicer demand follows. If PE compresses below 50x through earnings growth, add aggressively.

Key Dates

2026-05earningsFY2026 results (FY ends March)

OngoingmonitoringHyperscale capex commentary at NVIDIA / Meta / MSFT / Google quarterlies

Key Metrics

87.7

84.2

Fwd PE

24.9x

P/B

24.4%

ROE

N/A

Op Margin

N/A

D/E

0.47%

Div Yield

N/A

FCF

¥13.5T

Mkt Cap

Business Segments

Segment	Revenue	Share	Description
Telecommunications	Major	Major	Optical fiber cable, FTTH, hyperscale data center fiber, fusion splicers (Fujikura 90 Series).
Electronics	Moderate	Moderate	Connectors, flexible printed circuits.
Automotive	Moderate	Moderate	Wire harnesses.

Supply Chain Evidence

Evidence	Customer	Product	Detail
confirmed	AFL Global (Hubbell sub) — distribution partner	Fujikura 90 Series fusion splicers + fiber	AFL exclusively markets and services Fujikura fusion splicers globally — long-running partnership.[source](2024)
probable	Hyperscale data center operators (via integrators)	High-fiber-count optical cable + fusion splicers for AI cluster build-out	Each AI data hall requires tens of thousands of low-loss fiber terminations; 400G-800G transceivers demand parallel fiber ribbons. Fujikura Telecom Systems Business Unit explicitly targets this.[source](2024)
probable	Field telcos and ISPs globally	Fusion splicers + cable	Long-standing telecom market; market-share leader in fusion splicers per Mordor Intelligence.[source](2024)

Sources & References

↗StockAnalysishttps://stockanalysis.com/quote/tyo/5803/↗Fujikura fusion splicershttps://www.optic-product.fujikura.com/fusion-splicers/↗AFL Global (distribution)https://www.aflglobal.com/en/products/fusion-splicing ↗Fusion splicer market analysishttps://www.mordorintelligence.com/industry-reports/fusion-splicer-market

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