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AOTI

AOTI.L
43
Medical - Devices · Healthcare
Price
135.00 GBp
-7.00 (-4.93%)
Market Cap
143.6M GBp
Exchange
London Stock Exchange
Winston Score
43
Winston is serious
Mixed quality — meaningful strengths and weaknesses.
Data as of Aug 29, 2026 · filings through Jun 30, 2025
How the score breaks down
Quality
Mixed
Growth
Good
Cash Flow
Weak
Stability
Mixed
Valuation
Good

Winston Score History

The full picture

AOTI makes medical devices that help heal chronic wounds, like diabetic foot ulcers and other hard-to-treat skin injuries. Its main product uses a technology called topical wound oxygen therapy, which delivers oxygen directly to wounds to speed up healing. The company sells primarily to hospitals, wound care clinics, and healthcare systems.

AOTI generates revenue by selling and renting its wound therapy devices and related supplies to healthcare providers, mainly in the United States and Europe. The company is small, with a market cap around $100 million, but benefits from strong gross margins near 88% and a niche position in the wound care market with FDA-cleared technology. Key growth depends on expanding insurance reimbursement coverage and gaining wider clinical adoption, though the company faces risks from larger medical device competitors and the challenge of reaching consistent profitability.

Growth Profile

When traditional metrics don't capture the full picture, these are the signals growth stock investors use instead.

Revenue Growth

+27.8% YoY

YoY Growth Rate

Strong revenue growth

EPS Growth

+132.5% YoY

YoY Growth Rate

EPS growth accelerating

R&D Spend

$0/ year

0.0% of revenue

Below sector average (18%)

Research and development spending

Insider Activity

61.7%ownership

Insiders own a meaningful stake in the company

Cash Runway

~7 months

$14M cash & investments

Quarterly Free Cash Flow

↓ Burn rate worsening

Short runway — potential dilution ahead through share issuance

Strong grower

AOTI is growing revenue at 28% year-over-year. The Winston Score penalises unprofitable companies, but revenue at this pace tells a different story — this is a company still in "build mode."

The Winston Score above measures business quality today. Growth stocks often score lower because they invest in the future rather than maximising current profits. These metrics show what matters most for evaluating that future.

Share count broadly stable

0.0% over 3y

The share count has stayed roughly flat over this period — little dilution or buyback activity.

Diluted shares outstanding: 106.4M (2021) → 106.4M (2024)

Score breakdown

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Quality

Profit per sale
Gross Margin
51.6%
Healthy — 51.6% gross margin
Profit after running costs
Operating Margin
6.2%
Modest — 6.2% operating margin
Return on the money invested
ROCE
7.9%
Weak — 7.9% return on capital

ROIC between 5% and 15%. They earn 5 to 15 cents back per year on every dollar invested.

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Growth

Sales growth
Sales YoY
+29.8%
Fast-growing sales (+29.8% YoY)
Profit growth
EPS YoY
N/A
Data not available
How steady the profit is
EPS Consistency
2/3 quarters
Mixed — about half the quarters showed growth

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Cash Flow

Profit that turns into cash
Cash Conversion
-800%
Weak — only -800% of profit becomes cash
Spare cash per sale
FCF Margin
-18.1%
Burning cash (-18.1%)

Free cash flow is negative. They are burning cash, not generating it.

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Stability

What it owes vs what it owns
Debt / Equity
1.11
Elevated debt (1.11)
Covers its interest
Interest Cover
2.18x
Tight — interest eats into profit (2.2x)

Interest coverage between 1 and 3. Profits cover interest, but with little room to spare.

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Valuation

Price vs profit
P/E Ratio (TTM)
195.7x
Expensive — P/E 195.7

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

Cheaper or dearer next year
P/E vs Forward
+110.2
GROWING
Earnings expected to grow meaningfully — cheaper on forward P/E (195.7 → 85.5)

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Dividends

Not applicable for this business.
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