WinstonWınston
Back
Masimo Corporation logo

Masimo Corporation

0JZ2.L
61
Medical - Specialties · Healthcare
Price
179.96 GBp
+0.02 (+0.01%)
Market Cap
£9.54B
Exchange
London Stock Exchange
Winston Score
61
Winston is curious
A decent business — some strong pillars, some weaker.
Data as of Aug 23, 2026 · filings through Mar 31, 2026
How the score breaks down
Quality
Strong
Growth
Weak
Cash Flow
Exceptional
Stability
Strong
Valuation
Good

Share count falling — buybacks

7.1% over 4y

The company has reduced its share count over this period, returning value to shareholders through buybacks.

Diluted shares outstanding: 57.7M (2021) → 53.6M (2025)

Winston Score History

The full picture

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.

Score breakdown

Every number that matters to educated investors.

Each metric is explained in plain language so you know exactly what you're looking at. Start your free trial now.

Quality

Profit per sale
Gross Margin
62.1%
Premium pricing power — 62.1% gross margin
Profit after running costs
Operating Margin
19.2%
Healthy — 19.2% operating margin
Return on the money invested
ROCE
24.8%
Exceptional — 24.8% return on capital

ROIC between 15% and 25%. Every dollar invested in the business earns 15 to 25 cents back per year.

Full breakdown available with your free trial

See every metric, trend, and what it means for this stock.

Try free

Growth

Sales growth
Sales YoY
-21.0%
Shrinking sales (-21.0% YoY)
Profit growth
EPS YoY
N/A
Data not available
How steady the profit is
EPS Consistency
4/8 quarters
Earnings inconsistent quarter-to-quarter

Full breakdown available with your free trial

See every metric, trend, and what it means for this stock.

Try free

Cash Flow

Profit that turns into cash
Cash Conversion
307%
Turns 307% of profit into real cash
Spare cash per sale
FCF Margin
13.5%
Converts sales into free cash efficiently (13.5%)

FCF margin between 10% and 20%. Every $100 in sales becomes $10 to $20 in real cash.

Full breakdown available with your free trial

See every metric, trend, and what it means for this stock.

Try free

Stability

What it owes vs what it owns
Debt / Equity
0.58
Conservative — low debt load (0.58)
Covers its interest
Interest Cover
10.11x
Comfortably covers interest (10.1x)

Interest coverage above 8. Profits cover interest many times over.

Full breakdown available with your free trial

See every metric, trend, and what it means for this stock.

Try free

Valuation

Price vs profit
P/E Ratio (TTM)
125.0x
Expensive — P/E 125.0

P/E over 35. The market is pricing in heavy, sustained growth.

Cheaper or dearer next year
P/E vs Forward
+98.2
GROWING
Earnings expected to grow meaningfully — cheaper on forward P/E (125.0 → 26.8)

Full breakdown available with your free trial

See every metric, trend, and what it means for this stock.

Try free

Dividends

Not applicable for this business.
🔒 See full fundamentals and if they are improving or declining — click here for your free trial now.
Start free trial