Mendell Helium (LSE:MDH) Operating Margin %: -780.95% (As of Dec. 2025)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

What is Mendell Helium Operating Margin %?

Mendell Helium LSE:MDH +7.29% Operating Margin % is -780.95% as of Dec. 2025. Among 958 Drug Manufacturers companies, Mendell Helium ranks worse than 96.24% on this metric.

Operating Margin % is calculated as Operating Income divided by its Revenue. Mendell Helium's Operating Income for the six months ended in Dec. 2025 was £-0.16 Mil. Mendell Helium's Revenue for the six months ended in Dec. 2025 was £0.02 Mil. Therefore, Mendell Helium's Operating Margin % for the quarter that ended in Dec. 2025 was -780.95%.

The historical rank and industry rank for Mendell Helium's Operating Margin % or its related term are showing as below:

LSE:MDH' s Operating Margin % Range Over the Past 10 Years
Min: -17966.67   Med: -17966.67   Max: -963.93
Current: -963.93


LSE:MDH's Operating Margin % is ranked worse than
96.24% of 958 companies
in the Drug Manufacturers industry
Industry Median: 7.275 vs LSE:MDH: -963.93

Mendell Helium's 5-Year Average Operating Margin % Growth Rate was 0.00% per year.

Mendell Helium's Operating Income for the six months ended in Dec. 2025 was £-0.16 Mil. Its Operating Income for the trailing twelve months (TTM) ended in Dec. 2025 was £-0.59 Mil.


Mendell Helium  (LSE:MDH) 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 Nokia’s 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.


Mendell Helium Operating Margin % Related Terms


Mendell Helium Operating Margin % Historical Data

* Premium members only.

The historical data trend for Mendell Helium'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.

Mendell Helium Operating Margin % Chart

Mendell Helium Annual Data
Trend Jun24
Operating Margin %
-17,966.67

Mendell Helium Semi-Annual Data
Jun24 Dec24 Jun25 Dec25
Operating Margin % 0.00 -105.62 -1,060.00 -780.95

LSE:MDH vs ZTS, UTHR, VTRS: Operating Margin % Comparison

For the Drug Manufacturers - Specialty & Generic subindustry, Mendell Helium'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.


Mendell Helium Operating Margin % vs Drug Manufacturers Industry

For the Drug Manufacturers industry and Healthcare sector, Mendell Helium's Operating Margin % distribution charts can be found below:

* The bar in red indicates where Mendell Helium's Operating Margin % falls into.



Mendell Helium Operating Margin % Calculation

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.

Mendell Helium's Operating Margin % for the fiscal year that ended in Jun. 2024 is calculated as

Operating Margin %=Operating Income (A: Jun. 2024 ) / Revenue (A: Jun. 2024 )
=-1.078 / 0.006
=-17,966.67 %

Mendell Helium's Operating Margin % for the quarter that ended in Dec. 2025 is calculated as

Operating Margin %=Operating Income (Q: Dec. 2025 ) / Revenue (Q: Dec. 2025 )
=-0.164 / 0.021
=-780.95 %

* 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.

Frequently Asked Questions Learn more about Operating Margin % →
What does a Operating Margin % of -780.95% mean?
Mendell Helium (LSE:MDH) has a Operating Margin % of -780.95% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Mendell Helium and its competitors. According to the industry distribution chart, Mendell Helium ranks #922 out of 958 companies in the Drug Manufacturers industry, placing it in the top 96.2%.
Is Mendell Helium's Operating Margin % too high?
Mendell Helium's current Operating Margin % is -780.95%. Based on the distribution chart, Mendell Helium ranks #922 out of 958 companies in the Drug Manufacturers industry, which is in the bottom quartile relative to peers.
How does Mendell Helium's Operating Margin % compare to ZTS and UTHR?
According to the Drug Manufacturers industry distribution chart, Mendell Helium ranks #922 out of 958 companies for Operating Margin %. This places Mendell Helium in the lower half of its industry. The industry median Operating Margin % is 7.28. 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 Drug Manufacturers company?
The median Operating Margin % among Drug Manufacturers companies is 7.28, based on 958 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. 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 Mendell Helium and its competitors. For the Drug Manufacturers industry, the median Operating Margin % is 7.28 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Mendell Helium's current Operating Margin % is -780.95%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Mendell Helium stock overvalued right now?
Mendell Helium (LSE:MDH) has a current Operating Margin % of -780.95%. The current Operating Margin % is -780.95%. 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 Mendell Helium (LSE:MDH), the current Operating Margin % is -780.95% 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.

Mendell Helium Business Description

Other Exchanges MDH:UK
Address Arran Road, Arran House, Perth, GBR, PH1 3DZ
Mendell Helium PLC is a helium production and exploration company. The company operates in Kansas. The project portfolio of the company includes Fort Dodge, Hugoton, and Bitcoin Treasury.