Japan's optical fiber export volume and pricing signals improve, with Asian data center construction poised to accelerate

Overview

Starting with Japan Ministry of Finance trade statistics for optical fiber and optical cable in July, and combining them with recent first-quarter results and demand from Asian data center projects, the report concludes that fundamentals for optical products remain strong. Its central themes are the significant increase in optical cable export volume and optical fiber prices, broadly raised earnings guidance by companies, and the potential shift of some data center construction resources from the United States to Asia.

Core views

Japan Ministry of Finance trade statistics for July showed that optical cable export volume rose 37% year over year and the average optical fiber export price increased 95% year over year, providing a clear signal of improving volume and pricing. The average optical cable export price was still down 23% year over year, but its three-month moving average continued to rise. Accordingly, the report did not interpret the single-month year-over-year decline as a deterioration in the trend, instead emphasizing that the recent price trajectory was still improving. Breakdowns by destination and customs jurisdiction further reveal structural changes. The average prices of both optical fiber and optical cable exported from Japan to the United States increased year over year. By customs jurisdiction, optical cable export values from Tokyo and Nagoya declined year over year, while average prices increased. The core production bases of the three major Japanese cable manufacturers are Fujikura in Chiba, Sumitomo Electric Industries in Yokohama, and Furukawa Electric in Mie Prefecture, corresponding to the Tokyo, Yokohama, and Nagoya customs jurisdictions. Customs data can therefore help track export trends in the production regions of different manufacturers, although export value and price trends are not entirely consistent. The report cross-validates the trade data against recent first-quarter results: optical fiber companies generally raised earnings guidance, reflecting strong fundamentals; results from industrial electronics companies also confirmed that demand from Asian data center projects for both optical equipment and power equipment is increasing. Opposition in the United States to the construction of generative AI data centers has caused some projects to be suspended or restricted. The report believes US hyperscale customers may temporarily redirect some construction resources to Asia, while partly avoiding tariffs on components exported to the United States. Its key conclusion is not that demand is disappearing, but that construction destinations are changing; demand for optical-related products remains strong even if the geographic distribution shifts. In addition to optical fiber manufacturers, the report specifically mentions Meidensha and Fuji Electric because their power equipment businesses have relatively high exposure to sales in Asia. At the company level, the focus for Furukawa Electric is on growth in optical product sales volumes, product mix improvement and price adjustments, whether water-cooling modules can begin contributing to earnings in the second half, and whether the copper foil business can catch up with competitors. In addition to SICONEX, SWCC's incremental growth drivers include expanding e-Ribbon sales, a higher optical cable mix, and improvements in semiconductor contact probe sales volumes and product mix. Fujikura needs to verify whether recent trends in non-US projects can continue and the extent to which production constraints such as hydrogen and optical fiber procurement can be alleviated. For Sumitomo Electric Industries, the focus is on recovering the optical component output lost due to factory shutdowns in the first quarter and monitoring capacity expansion investments in InP substrates and optical components. In terms of valuation, all four companies received Buy ratings and 12-month target prices. Furukawa Electric's target price is ¥6,400, corresponding to 20 times FY3/28E EV/EBITDA; the multiple is determined based on the relationship between domestic and overseas peers' EV/EBITDA and EBITDA growth. SWCC's target price is ¥16,700, corresponding to 11.5 times FY3/28E EV/EBITDA, based on the relationship between global peers' EV/EBITDA and EBITDA margins. Fujikura's target price is ¥7,600, corresponding to 25 times FY3/28E EV/EBITDA, likewise referencing the relationship between domestic and overseas peer valuations and EBITDA margins. Sumitomo Electric Industries' target price is ¥3,300, using a sum-of-the-parts valuation approach and applying a target FY3/28E EV/EBITDA multiple of 13 times. The main constraints on these conclusions arise from data center investment, supply, and execution risks. If generative AI data centers are delayed or cool due to shortages of key products, declining project profitability, or rising component prices, demand for optical products, cables, and power equipment could all fall short of expectations. Each company also faces risks including weaker-than-expected capacity recovery and expansion, competitors catching up, inability to pass through raw material costs, weak end demand for automobiles and smartphones, inadequate returns on overseas investments, and exchange-rate volatility. Therefore, the report's optimistic conclusion depends on the continuation of Asian projects, the easing of capacity bottlenecks, and improvements in sales volumes and product mix for high-value-added products actually translating into earnings.

Analysis framework

The report first breaks down Ministry of Finance trade statistics into export value, export volume, and average export price, examining trends by year-over-year and month-over-month changes, three-month moving averages, destination, and customs jurisdiction. It then cross-validates these trends using first-quarter earnings guidance and demand from data center projects before mapping its assessment of the geographic shift in demand to the products, capacity, and business exposure of each covered company. Finally, it sets target prices based on FY3/28E EV/EBITDA, relationships with peer growth or margins, and a sum-of-the-parts valuation method.

Methodology notes

• Industry/Sector Analysis FrameworkVolume-price decomposition

  Decomposition of export value, export volume, and average export price

  The report separately examines the export volume and unit price of optical fiber and optical cable to determine whether changes in exports are driven by demand volume, prices, or both.

• Cycle and Business Conditions Framework

  Three-month moving average

  The report uses a three-month moving average to smooth monthly fluctuations in the average optical cable export price and, on this basis, notes that the price trend remains upward.

• Valuation MethodEV/EBITDA valuation

  Target EV/EBITDA based on FY3/28E

  The report sets FY3/28E target multiples for the four companies; Furukawa Electric references the relationship between peer valuations and EBITDA growth, SWCC and Fujikura reference the relationship between peer valuations and EBITDA margins, and Sumitomo Electric Industries applies a target multiple of 13 times.

• Valuation MethodSOTP Valuation

  Sum-of-the-parts valuation of Sumitomo Electric Industries

  The report uses a sum-of-the-parts valuation approach for Sumitomo Electric Industries' diversified business structure and derives a 12-month target price of ¥3,300.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• Furukawa Electric (5801.T)

  Benefits from optical product demand, sales volume growth, product mix improvement, and price adjustments, while water-cooling modules are expected to contribute to earnings from the second half.

  Strengths

  Strong fundamentals in optical products, with incremental opportunities in water-cooling modules, copper foil, and other areas.

  Weaknesses

  The copper foil business still needs to catch up with competitors, and FFOC's earnings may deteriorate again.

  Comparison

  The report focuses on the progress of its copper foil business in catching up with competitors.

  Risks

  Weaker-than-expected sales of optical products for data centers, slowing AI investment, insufficient HVDC orders, and weaker-than-expected automobile production and cost pass-through.

• SWCC (5805.T)

  SICONEX, e-Ribbon, a higher optical cable mix, and improvements in the volume-price structure of semiconductor contact probes constitute growth drivers.

  Strengths

  Its product portfolio spans energy infrastructure, communications components, and semiconductor contact probes.

  Weaknesses

  Margin improvement depends on the leveling of construction workloads, staffing efficiency, and the pricing environment.

  Comparison

  Faces competition from low-priced optical cable products from China, India, and other markets.

  Risks

  Supply and demand for cables and power equipment moving toward balance, lower selling prices, intensifying optical cable competition, a slower EV transition, inability to pass through copper prices, insufficient returns on overseas investments, and yen appreciation.

• Fujikura (5803.T)

  Benefits from hyperscale customers' optical demand and trends in non-US data center projects.

  Strengths

  Has business exposure to data center optical products such as ultra-high-density optical cables.

  Weaknesses

  Production remains constrained by factors such as hydrogen and optical fiber procurement.

  Comparison

  Needs to guard against competitors catching up in ultra-high-density optical cables.

  Risks

  Delayed realization of investment returns from hyperscale customers, continued investment curbs by telecommunications operators, a slowdown in the smartphone market, insufficient automobile production, and exchange-rate volatility.

• Sumitomo Electric Industries (5802.T)

  Needs to recover the optical component output lost due to factory shutdowns in the first quarter and advance capacity expansion for InP substrates and optical components.

  Strengths

  Covers multiple business areas, including optical components, information and communications, automotive, and environment and energy.

  Weaknesses

  Faces near-term pressure to make up production following the shutdowns.

  Comparison

  Its information and communications business faces competitors catching up in ultra-high-density optical cables.

  Risks

  Declining automobile production, slow pass-through of material costs, slowing capital expenditure by hyperscale customers, project delays, high energy and raw material prices, and exchange-rate volatility.

• Meidensha

  The report believes rising demand for power equipment from Asian data centers may be relevant to its business.

  Strengths

  Its power equipment business has relatively high exposure to sales in Asia.

• Fuji Electric

  The report believes rising demand for power equipment from Asian data centers may be relevant to its business.

  Strengths

  Its power equipment business has relatively high exposure to sales in Asia.

Key data

• July optical cable export volume+37% year over yearJapan Ministry of Finance trade statistics showed significant growth in export volume.
• July average optical fiber export price+95% year over yearThe unit export price of optical fiber increased significantly.
• July average optical cable export price-23% year over yearIt still declined year over year for the month, but the three-month moving average remained on an upward trend.
• Furukawa Electric target price and valuation¥6,400; 20.0 times EV/EBITDA12-month target price; based on FY3/28E and the relationship between domestic and overseas peers' EV/EBITDA and EBITDA growth.
• SWCC target price and valuation¥16,700; 11.5 times EV/EBITDA12-month target price; based on FY3/28E and the relationship between global peers' EV/EBITDA and EBITDA margins.
• Fujikura target price and valuation¥7,600; 25.0 times EV/EBITDA12-month target price; based on FY3/28E and the relationship between domestic and overseas peers' EV/EBITDA and EBITDA margins.
• Sumitomo Electric Industries target price and valuation¥3,300; 13.0 times EV/EBITDA12-month target price; based on FY3/28E and using an SOTP valuation approach.

Impact & implications

The report believes trade data and first-quarter earnings guidance jointly indicate that demand fundamentals for optical products remain strong. Even if some US data center projects are restricted, demand may shift through the reallocation of construction resources toward Asia rather than disappearing outright, supporting suppliers of optical fiber, optical cable, optical components, and data center power equipment. Actual earnings delivery at the company level will still depend on sales volumes, product mix, price adjustments, capacity recovery and expansion, and whether the trend in Asian projects can continue.

Risks

• Furukawa Electric: Expansion of high-margin optical products for data centers, FFOC earnings, and the water-cooling and copper foil businesses may fall short of expectations; investment in AI data centers, cable demand, HVDC orders, or automobile production may also slow, while raw material price increases may not be passed through.
• SWCC: Supply and demand for cables and power equipment in Japan moving toward balance may depress selling prices; improvements in construction and staffing efficiency may be slow, while low-priced imported optical cables, weak end demand, a slower EV transition, copper prices, returns on overseas investments, and yen appreciation also pose risks.
• Fujikura: Returns on hyperscale customer investments may be delayed, telecommunications operators may continue to restrict investment, and competition in ultra-high-density optical cables may intensify; smartphones, automobile production, and exchange rates may also be unfavorable.
• Sumitomo Electric Industries: Automobile production and cost pass-through, capital expenditure and inventory adjustments by hyperscale customers, optical cable competition, power project progress, contributions from clean energy strategies, demand for industrial tools, energy and material costs, and exchange rates may all fall short of expectations.

What to watch

• Furukawa Electric's optical product sales volumes, product mix, and price adjustments; the earnings contribution from water-cooling modules beginning in the second half; and progress in catching up in the copper foil business.
• SWCC's SICONEX and e-Ribbon sales, optical cable mix, and improvements in semiconductor contact probe sales volumes and product mix.
• Whether Fujikura's non-US project trends can continue and the extent to which production constraints such as hydrogen and optical fiber procurement are alleviated.
• Whether Sumitomo Electric Industries can recover the optical component output lost due to first-quarter shutdowns and the progress of capacity expansion for InP substrates and optical components.