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Mitsubishi Heavy Industries builds heavy machinery and equipment — from power plants and fighter jets to ships and rockets — and sells them to governments and large industrial customers.
Mitsubishi Heavy Industries is one of Japan's oldest and largest industrial manufacturers, a company that makes the big, expensive things other companies and governments can't easily build themselves. It builds power plant equipment, including gas turbines and nuclear plant components. It makes aircraft and defense equipment, from fighter jets to missile systems to parts for commercial jets. It builds ships, from ferries to naval vessels and submarines. And it makes the machines used in factories and the rockets that launch satellites into orbit.
The company sells to a narrow but powerful customer base: electric utilities, national governments and defense ministries, airlines and ship owners, and heavy industries. Defense is a central pillar. Japan is now spending much more on its military, and Mitsubishi Heavy is the country's biggest defense contractor. It assembles the F-35 fighter jet in Japan, works with Boeing and Airbus on commercial aircraft parts, and is developing a next-generation fighter jet with partners from the UK, Italy, and Japan. In power, it makes gas turbines that utilities buy to generate electricity, and it is a major name in nuclear plant equipment. The company's stock trades in the US over the counter, and the way it earns money is simple: it takes on enormous, complex engineering contracts and gets paid for the machinery, the parts, and the long-term service that keeps everything running. Its competitors are global engineering giants like General Electric, Siemens, and Rolls-Royce, though its closest rival is often another Japanese conglomerate. The business is capital-heavy and slow-moving, and profit depends on winning big contracts and executing them without cost overruns. Defense spending, rising electricity demand, and the global push for cleaner power are all tailwinds.
What makes Mitsubishi Heavy interesting is its sheer breadth and its deep ties to Japan's industrial base. It recently spent billions buying back its own shares and raising its dividend, a sign it believes its stock is undervalued. It also sold off its stake in the troubled automaker Mitsubishi Motors to focus on its core industrial and defense work. A company that makes both nuclear power plants and fighter jets sits at the center of some of the biggest global questions — energy security and national defense — which is precisely why investors pay attention to it.
Saved answer · last researched 5 Nov 2026