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Siemens makes the machines, software, and equipment that factories, trains, and power grids run on.
Siemens is a giant German industrial company that sells to other businesses, not really to you. It builds the unglamorous stuff that keeps the modern world moving: factory automation gear, railway trains and signaling systems, and the electrical equipment that powers buildings and grids. Its customers are manufacturers, utilities, hospitals, transit agencies, and governments. They pay Siemens once for the hardware and then keep paying for software, service contracts, and spare parts for years afterward. That recurring service money is the good stuff, because it's predictable and high-margin.
The company runs several distinct businesses, and it's easiest to think of them as separate companies under one roof. The biggest is Digital Industries, which sells automation software and controllers that tell factory robots and machines what to do — roughly a third of revenue. Smart Infrastructure handles building technology and electrical gear: thermostats, switchgear, and grid software that manages how electricity flows. Mobility makes trains, trams, and rail signaling, including big rolling-stock orders like high-speed trains and subway fleets. There's also Siemens Healthineers, a separately listed medical imaging business (MRI and CT scanners), and a smaller unit serving chipmakers. Think of it as a shopping mall of industrial businesses: each one has its own competitors, customers, and profit margins, but they share the Siemens brand and balance sheet.
The recent story is a big pivot. Under CEO Roland Busch, Siemens is shedding heavy, cyclical hardware units and pouring money into software. It sold its large motor and drive business (Innomotics) and its logistics unit, and it's buying software companies to catch up with rivals in factory automation. It also spun off its energy business, now called Siemens Energy, so that listed company carries the gas turbines and wind power risk while Siemens itself stays focused on automation, buildings, and trains. Free cash flow is strong, and the company uses it to pay a reliable dividend, buy back shares, and fund small technology acquisitions rather than chase giant mergers. The bet is simple: heavy equipment is a low-growth, boom-and-bust business, but the software and service layer that runs factories and grids can grow steadily for decades.
Saved answer · last researched 9 Oct 2026