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Fujikura Ltd.

Fujikura makes the cables, connectors, and tiny parts that carry power and data inside cars, data centers, and phones.

Fujikura sells the plumbing of the modern world: cables and connectors that carry electricity and data. Its biggest and fastest-growing business is making optical fiber cables and related gear for data centers, the giant warehouses of computers that power AI. When you ask an AI chatbot a question, huge volumes of data zip between machines inside these centers, and Fujikura makes the fiber and connector systems that move that data. Think of it as the road builder for the AI boom, not the car maker. The company also makes wire harnesses, the bundles of wires that run through cars like nerves, plus cables for power grids and industrial gear. In short, whenever something needs to send power or a signal reliably, Fujikura often makes the part that does it.

The money comes from three main buckets. The data center and telecom cable business is now the star, generating a large and rising share of revenue as AI buildouts accelerate. The automotive segment sells wiring to carmakers around the world, and while it is steadier, it earns thinner profits because car companies squeeze suppliers hard. The rest comes from other industrial and power products. A few years ago, Fujikura was seen as a modest component maker with limited growth. Then AI data centers exploded, demand for high-end optical fiber surged, and profits jumped fast. The company's shares went on a huge run as investors realized it holds a key spot in the AI supply chain, and it has been expanding fiber capacity to keep up.

Fujikura was founded in Japan in the late 1800s as a maker of electric wire, so it has been in the cable business for well over a century, quietly evolving from power lines to the fiber optics that matter today. Managements don't need to say much about strategy here: the job is to add capacity fast and stay the preferred supplier to data center builders before rivals catch up. Profits and cash flow are mostly reinvested into new plants and equipment rather than big buybacks, because the opportunity in front of it is about scale, not financial engineering. The key risk is simple. If AI spending slows or customers buy less fiber, the growth story cools quickly, because this is still a manufacturing business with heavy fixed costs. For now, though, Fujikura is one of the cleaner ways to own a piece of the AI buildout without owning a chipmaker.

Saved answer · last researched 14 Oct 2026