Johnson Controls International plc

Johnson Controls International plc is a global provider of commercial building technology and solutions — heating, ventilation, and air-conditioning equipment, building controls, fire detection and suppression, and integrated security systems — together with the services to install, maintain, and optimise them, generating $23.6 billion in revenue in fiscal 2025. Headquartered in Cork, Ireland, with roughly 87,000 employees worldwide, the company traces its roots to 1885, when Warren Johnson invented the electric room thermostat in Milwaukee.

This is a company in the middle of a deliberate and consequential transformation. Between 2024 and 2025, Johnson Controls sold its Air Distribution Technologies business and its Residential and Light Commercial HVAC business to Bosch for net proceeds of approximately $5.6 billion, exiting residential markets to focus entirely on commercial buildings. A new CEO, Joakim Weidemanis — a Danaher veteran — took over in March 2025 and immediately set about installing an operating system that his predecessor had not. The company re-segmented from four operating units into three regional divisions on the same day. The question the file turns on is whether the combination of portfolio focus, operational discipline, and a data-centre-fuelled demand cycle can lift Johnson Controls from a decent industrial compounder into something the market hasn't yet priced.

The bull case for Johnson Controls is straightforward: a pure-play commercial buildings franchise with a $21 billion order backlog, a recently simplified portfolio, a new CEO importing Danaher-like operational rigour, and a structural tailwind from data centre construction that shows no sign of abating. The bear case is that these tailwinds are cyclical dressed as secular, that the company has lagged best-in-class margins for years despite multiple restructuring programmes, and that a stock trading at roughly 39 times trailing continuing earnings already discounts a great deal of execution that has yet to happen. Neither case is obviously wrong, and the file is organised around the evidence that would tilt the balance.