Masimo Corporation (0JZ2.L) Stock Analysis & Winston Score
Masimo Corporation makes medical monitoring devices used in hospitals and clinics around the world. Its most well-known product is a pulse oximeter — a sensor that measures the oxygen level in a patient's blood without breaking the skin. Masimo invented a technology called Measure-Through Motion and Low Perfusion (SET), which works more accurately than older devices even when patients are moving or have poor circulation. Masimo earns money by selling its monitoring hardware to hospitals and then charging ongoing fees for the disposable sensors and software that go with it — a model that creates recurring revenue. The company operates globally, with a strong presence in the US and growing sales in Europe and Asia, generating roughly $2 billion in annual revenue. Its patented sensor technology gives it a durable competitive edge, but Masimo faces execution risk after acquiring the consumer audio brand Sound United, a move that expanded its cost base and shifted focus away from its core medical business.
Winston Score: 61/100 — Good
A decent business — some strong pillars, some weaker.
- Quality: Strong (23/30)
- Growth: Weak (3/20)
- Cash Flow: Exceptional (9/10)
- Stability: Strong (8/10)
- Valuation: Good (5/10)
- Ownership: Good (10/15)
Key Facts
Price: 179.96 GBp
Market Cap: £9.5B
Sector: Healthcare
Industry: Medical - Specialties
Exchange: London Stock Exchange

