AI Data Center Demand Doubles Fujikura Shares, Lifts Market Value Above 10 Trillion Yen
Japanese wire and cable manufacturer Fujikura supplies optical fiber and fiber-optic cables and has benefited in recent years from U.S. technology companies expanding AI data centers. Demand for high-speed data transmission has boosted orders, showing that the benefits of AI capital spending have spread beyond chips and servers to networking equipment and other parts of the hardware supply chain.
As of July 20, 2026, Fujikura shares had gained more than 100% for the year, while its market capitalization topped 10 trillion yen for the first time. Rakuten Securities said strong demand for fiber-optic cable products from U.S. AI data centers was the main force lifting earnings expectations and doubling the share price.
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The history behind this eventFujikura Plans ¥300 Billion Investment to Triple Japan, U.S. Fiber Capacity for AI Demand
Generative AI data centers require high-speed, low-latency internal connections, driving demand for high-density optical fiber and cables. Japanese cable maker Fujikura has ultrahigh-density optical wiring technologies including SWR and WTC. On October 28, 2025, it signed a framework agreement with the U.S. Department of Commerce and was selected as an optical-cable supplier for U.S. AI infrastructure.
Fujikura announced on March 13, 2026, that it would invest up to ¥300 billion in phases in Japan and the United States, expanding optical-fiber and cable capacity to as much as three times current levels. On May 14, the company finalized plans for a new plant at its Sakura Works in Chiba Prefecture, with an investment of about ¥40 billion and production scheduled to begin in December 2030. U.S. investment could reach ¥260 billion, and Fujikura established Fujikura Cable Systems LLC in June to advance the plan.
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