Arnold Magnetic Technologies

Arnold Magnetic Technologies

Arnold Magnetic Technologies was founded over a century ago and is now a subsidiary of Compass Diversified (NYSE: CODI), a publicly traded holding company that operates a portfolio of middle-market businesses. The firm remains headquartered in Rochester, NY, and has grown to 11 facilities across the United States, the United Kingdom, Switzerland, Thailand, and China, including a joint venture in Ganzhou, China, for rare earth mining (per the firm). The company manufactures permanent magnets in several chemistries — samarium cobalt (RECOMA), neodymium iron boron, and alnico — along with precision thin metals (Arnon silicon steel) and flexible composites (Flexmag). Its products go into high-efficiency electric motors and generators, sensors, batteries, and magnetic assemblies. Confirmed end-markets include aerospace and defense (ITAR/DFARS compliant), motors and drives, medical devices, and energy generation. Arnold maintains a Technology Center in Middleton, Wisconsin, for customer design collaboration. Arnold does not disclose a separate AUM — it reports as an operating subsidiary within Compass Diversified's industrial segment. The company employs a global manufacturing workforce and holds multiple patents on magnetic materials and production methods. It is an original partner of NASA and CERN, supporting projects in fusion and ion propulsion (per the firm). Recent activity includes the ongoing expansion of ITAR-compliant capacity to meet growing defense demand. Arnold's structural differentiator is its vertical integration across the rare earth magnet supply chain: from a joint venture in a Ganzhou rare earth mine to alloy production in the West and finished magnet fabrication. This model, combined with its DFARS/ITAR compliance, positions it as a non-traditional defense vendor for U.S. and allied markets.