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Who Makes the Parts in Robot Joints? 12 US-Listed Makers and Their Past Year
Oct 19, 2026
A robot joint is an actuator: a motor, gears, bearings and a sensor. We tracked twelve US-listed companies that make those parts, from one stocks-llm screener answer. From October 16, 2025 to October 16, 2026, eleven of the twelve stocks rose, with a median gain of 34%: NN Inc rose 88%, Allient 87% and Moog 81%, while Columbus McKinnon fell 1%. Ten of the twelve closed more than 15% below their highest close of the past year, and Allegro MicroSystems is 55% below its June 30 high.
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