OptiBiotix Health (LSE:OPTI) FCF Margin %: -143.68% (As of Dec. 2025)


What is OptiBiotix Health FCF Margin %?

OptiBiotix Health LSE:OPTI FCF Margin % is -143.68% as of Dec. 2025. The stock has 4 warning signs investors should review. Among 959 Biotechnology companies, OptiBiotix Health ranks worse than 57.77% on this metric.

FCF Margin % is calculated as Free Cash Flow divided by its Revenue. OptiBiotix Health's Free Cash Flow for the six months ended in Dec. 2025 was £-0.88 Mil. OptiBiotix Health's Revenue for the six months ended in Dec. 2025 was £0.61 Mil. Therefore, OptiBiotix Health's FCF Margin % for the quarter that ended in Dec. 2025 was -143.68%.

As of today, OptiBiotix Health's current FCF Yield % is -26.98%.

The historical rank and industry rank for OptiBiotix Health's FCF Margin % or its related term are showing as below:

LSE:OPTI' s FCF Margin % Range Over the Past 10 Years
Min: -3517.86   Med: -258.27   Max: -79.48
Current: -151.8

During the past 13 years, the highest FCF Margin % of OptiBiotix Health was -79.48%. The lowest was -3517.86%. And the median was -258.27%.

LSE:OPTI's FCF Margin % is ranked worse than
57.77% of 959 companies
in the Biotechnology industry
Industry Median: -84.65 vs LSE:OPTI: -151.80

OptiBiotix Health FCF Margin % Related Terms

OptiBiotix Health FCF Margin % Historical Data

* Premium members only.

The historical data trend for OptiBiotix Health's FCF 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.

OptiBiotix Health FCF Margin % Chart

OptiBiotix Health Annual Data
Trend Nov15 Nov16 Nov17 Nov18 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
FCF Margin %
Get a 7-Day Free Trial Premium Member Only Premium Member Only -79.48 -279.43 -237.11 -203.22 -151.80

OptiBiotix Health Semi-Annual Data
Nov15 May16 Nov16 May17 Nov17 May18 Nov18 May19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
FCF Margin % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only -321.16 -269.93 -172.22 -160.68 -143.68

LSE:OPTI vs VRTX, REGN, ALNY: FCF Margin % Comparison

For the Biotechnology subindustry, OptiBiotix Health's FCF Margin %, along with its competitors' market caps and FCF 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.

OptiBiotix Health FCF Margin % vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, OptiBiotix Health's FCF Margin % distribution charts can be found below:

* The bar in red indicates where OptiBiotix Health's FCF Margin % falls into.


OptiBiotix Health FCF Margin % Calculation

FCF margin is the ratio of Free Cash Flow divided by net sales or Revenue, usually presented in percent.

OptiBiotix Health's FCF Margin for the fiscal year that ended in Dec. 2025 is calculated as

FCF Margin=Free Cash Flow (A: Dec. 2025 )/Revenue (A: Dec. 2025 )
=-1.77/1.166
=-151.80 %

OptiBiotix Health's FCF Margin for the quarter that ended in Dec. 2025 is calculated as

FCF Margin=Free Cash Flow (Q: Dec. 2025 )/Revenue (Q: Dec. 2025 )
=-0.875/0.609
=-143.68 %

* 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 FCF Margin % →
What does a FCF Margin % of -143.68% mean?
OptiBiotix Health (LSE:OPTI) has a FCF Margin % of -143.68% as of Dec. 2025. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on OptiBiotix Health and its competitors. According to the industry distribution chart, OptiBiotix Health ranks #554 out of 959 companies in the Biotechnology industry, placing it in the top 57.8%.
Is OptiBiotix Health's FCF Margin % too high?
OptiBiotix Health's current FCF Margin % is -143.68%. Based on the distribution chart, OptiBiotix Health ranks #554 out of 959 companies in the Biotechnology industry, which is below the industry midpoint.
How does OptiBiotix Health's FCF Margin % compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, OptiBiotix Health ranks #554 out of 959 companies for FCF Margin %. This places OptiBiotix Health in the lower half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good FCF Margin % for a Biotechnology company?
A good FCF Margin % depends on the Biotechnology industry context. However, FCF 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 FCF Margin % mean?
A high FCF Margin % can signal that a stock is expensive relative to its fundamentals. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on OptiBiotix Health and its competitors. OptiBiotix Health's current FCF Margin % is -143.68%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is OptiBiotix Health stock overvalued right now?
Based on GuruFocus' analysis, OptiBiotix Health (LSE:OPTI) is currently considered Possible Value Trap. The stock's GF Value™ is £0.30, compared to a current price of £0.06 — trading 78.8% below its estimated fair value. The current FCF Margin % is -143.68%. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is FCF Margin % calculated?
FCF Margin % is calculated from a company's financial statements. For OptiBiotix Health (LSE:OPTI), the current FCF Margin % is -143.68% 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.

OptiBiotix Health Business Description

Address Innovation Centre, Innovation Way, Heslington, York, GBR, YO10 5DG
OptiBiotix Health PLC principal activity is that of identifying and developing microbial strains, compounds, and formulations for use in food ingredients, supplements and active compounds that can impact on human physiology, deriving potential health benefits. It is a life sciences business focused on the development of products which reduce hunger and food cravings, enhance the gut microbiome, and provide a healthy substitute for sugar. Its product portfolio includes First-generation products- SlimBiome, WellBiome; and Second-generation solutions- SweetBiotix, Microbiome Modulators. The group has one class of business. It has presence in United Kingdom, United States, India China, and Rest of world. The company generates majority of revenue from United States.