AOTILSE:AOTI 21 Operating Margin % is 10.25% as of Dec. 2025, which is 377% above its 10-year median of 2.15. GuruFocus rates LSE:AOTI with a GF Score™ of 21/100. The stock has 8 warning signs investors should review. Among 816 Medical Devices & Instruments companies, AOTI ranks better than 61.89% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. AOTI's Operating Income for the
six
months ended in Dec. 2025 was £2.66 Mil. AOTI's Revenue for the
six
months ended in Dec. 2025 was £25.92 Mil. Therefore, AOTI's Operating Margin % for the quarter that ended in Dec. 2025 was 10.25%.
The historical rank and industry rank for AOTI's Operating Margin % or its related term are showing as below:
LSE:AOTI'
s Operating Margin % Range Over the Past 10 Years
Min: -12.61 Med: 2.15 Max: 13.87
Current: 8.32
LSE:AOTI's Operating Margin % is ranked better than 61.89% of 816
companies
in the Medical Devices & Instruments industry
Industry Median: 3.4
vs LSE:AOTI: 8.32
AOTI's 5-Year Average Operating Margin % Growth Rate was 0.00% per year.
AOTI's Operating Income for the
six
months ended in Dec. 2025 was £2.66 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Dec. 2025 was £4.11 Mil.
Warning Sign:
AOTI Inc has recorded a loss in operating income at least once over the past 3 years.
AOTI (LSE:AOTI) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
AOTI Operating Margin % Related Terms
AOTI Operating Margin % Historical Data
* Premium members only.
The historical data trend for AOTI's Operating Margin % can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
LSE:AOTI vs ABT, SYK, MDT: Operating Margin % Comparison
For the Medical Devices subindustry, AOTI's Operating Margin %, along with its competitors' market caps and Operating Margin % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
AOTI Operating Margin % vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, AOTI's Operating Margin % distribution charts can be found below:
* The bar in red indicates where AOTI's Operating Margin % falls into.
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
AOTI's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
AOTI (LSE:AOTI) has a Operating Margin % of 10.25% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on AOTI and its competitors. This is 377% above median its historical median of 2.15. According to the industry distribution chart, AOTI ranks #311 out of 816 companies in the Medical Devices & Instruments industry, placing it in the top 38.1%.
Is AOTI's Operating Margin % too high?
AOTI's current Operating Margin % of 10.25% is 377% above median its 10-year median of 2.15. The Medical Devices & Instruments industry median Operating Margin % is 3.40. AOTI's value of 10.25% is 201.5% above this industry median. Based on the distribution chart, AOTI ranks #311 out of 816 companies in the Medical Devices & Instruments industry, which is above the industry midpoint. Overall, AOTI has a GF Score™ of 21/100, reflecting its overall financial health beyond just this single metric.
How does AOTI's Operating Margin % compare to ABT and SYK?
According to the Medical Devices & Instruments industry distribution chart, AOTI ranks #311 out of 816 companies for Operating Margin %. This puts AOTI in the upper half of its industry. The industry median Operating Margin % is 3.40. AOTI's value of 10.25% is 201.5% above this benchmark. While the company's 10-year median is 2.15 vs. the industry median of 3.40, AOTI has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Operating Margin % for a Medical Devices & Instruments company?
The median Operating Margin % among Medical Devices & Instruments companies is 3.40, based on 816 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. AOTI's current Operating Margin % of 10.25% is 201.5% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on AOTI and its competitors. For the Medical Devices & Instruments industry, the median Operating Margin % is 3.40 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. AOTI's current Operating Margin % is 10.25%, which is 377% above median its own 10-year median of 2.15. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is AOTI stock overvalued right now?
AOTI (LSE:AOTI) has a current Operating Margin % of 10.25%. The current Operating Margin % is 10.25%, which is 377% above median its 10-year median of 2.15 and 201.5% above the Medical Devices & Instruments industry median of 3.40. AOTI's overall GF Score™ is 21/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For AOTI (LSE:AOTI), the current Operating Margin % is 10.25% as of Dec. 2025. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
AOTI Inc is the design, manufacture and provision of topical oxygen therapy products and services for healthcare providers and patients with chronic wounds. These products and services enable patients to heal faster and more durably and healthcare providers to reduce the overall cost of care. The specific purposes of the Company are to patent, manufacture, rent, and sell medical devices to help resolve severe acute and chronic wounds for customers globally. The Company operates in one reportable segment, which comprises the development and sale of Creative medical devices for therapeutic care. The company's solutions includes Multi-Modality Oxygen Therapy, Extremity Chamber, Multi-Patch, Negative Pressure Wound Therapy.
21GF Score
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