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Probiotix HealthAQSE:PBX 21 PB Ratio is 10.50 as of Sep. 16, 2026, which is 64% above its 10-year median of 6.39. GuruFocus rates AQSE:PBX with a GF Score™ of 21/100 and a GF Value™ of £0.10 (Fairly Valued). The stock has 3 warning signs investors should review. Among 1,223 Biotechnology companies, Probiotix Health ranks worse than 87.9% on this metric.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-09-16), Probiotix Health's share price is £0.105. Probiotix Health's Book Value per Share for the quarter that ended in Jun. 2026 was £0.01. Hence, Probiotix Health's PB Ratio of today is 10.50.
The historical rank and industry rank for Probiotix Health's PB Ratio or its related term are showing as below:
AQSE:PBX'
s PB Ratio Range Over the Past 10 Years
Min: 1.92 Med: 6.39 Max: 11.67
Current: 10.5
During the past 2 years, Probiotix Health's highest PB Ratio was 11.67. The lowest was 1.92. And the median was 6.39.
AQSE:PBX's PB Ratio is ranked worse than 87.9% of 1223
companies
in the Biotechnology industry
Industry Median: 2.87
vs AQSE:PBX: 10.50
During the past 12 months, Probiotix Health's average Book Value Per Share Growth Rate was -9.10% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was -17.50% per year.
During the past 2 years, the highest 3-Year average Book Value Per Share Growth Rate of Probiotix Health was -17.50% per year. The lowest was -17.50% per year. And the median was -17.50% per year.
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Probiotix Health PB Ratio Related Terms
Probiotix Health PB Ratio Historical Data
* Premium members only.
The historical data trend for Probiotix Health's PB Ratio 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.
Probiotix Health PB Ratio Chart
Probiotix Health Annual Data
Trend
Dec24
Dec25
PB Ratio
5.21
8.61
Probiotix Health Semi-Annual Data
Dec24
Jun25
Dec25
Jun26
PB Ratio
5.21
5.91
8.61
7.75
AQSE:PBX vs VRTX, REGN, MRNA: PB Ratio Comparison
For the Biotechnology subindustry, Probiotix Health's PB Ratio, along with its competitors' market caps and PB Ratio 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.
Probiotix Health PB Ratio vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, Probiotix Health's PB Ratio distribution charts can be found below:
* The bar in red indicates where Probiotix Health's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
* 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.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Probiotix Health (AQSE:PBX) has a PB Ratio of 10.50 as of Sep. 16, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Probiotix Health and its competitors. This is 64% above median its historical median of 6.39. Over the past decade, Probiotix Health's PB Ratio has ranged from 1.92 to 11.67. According to the industry distribution chart, Probiotix Health ranks #1075 out of 1223 companies in the Biotechnology industry, placing it in the top 87.9%.
Is Probiotix Health's PB Ratio too high?
Probiotix Health's current PB Ratio of 10.50 is 64% above median its 10-year median of 6.39. Over the past 10 years, this metric has ranged from a low of 1.92 to a high of 11.67. The Biotechnology industry median PB Ratio is 2.87. Probiotix Health's value of 10.50 is 265.9% above this industry median. Based on the distribution chart, Probiotix Health ranks #1075 out of 1223 companies in the Biotechnology industry, which is in the bottom quartile relative to peers. Overall, Probiotix Health has a GF Score™ of 21/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Probiotix Health's PB Ratio compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, Probiotix Health ranks #1075 out of 1223 companies for PB Ratio. This places Probiotix Health in the lower half of its industry. The industry median PB Ratio is 2.87. Probiotix Health's value of 10.50 is 265.9% above this benchmark. Historically, Probiotix Health's own PB Ratio has ranged from 1.92 to 11.67 over the past decade. While the company's 10-year median is 6.39 vs. the industry median of 2.87, Probiotix Health 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 PB Ratio for a Biotechnology company?
The median PB Ratio among Biotechnology companies is 2.87, based on 1,223 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Probiotix Health's current PB Ratio of 10.50 is 265.9% 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 PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Probiotix Health and its competitors. For the Biotechnology industry, the median PB Ratio is 2.87 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Probiotix Health's current PB Ratio is 10.50, which is 64% above median its own 10-year median of 6.39. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Probiotix Health stock overvalued right now?
Based on GuruFocus' analysis, Probiotix Health (AQSE:PBX) is currently considered Fairly Valued. The stock's GF Value™ is £0.10, compared to a current price of £0.11 — trading 5% above its estimated fair value. The current PB Ratio is 10.50, which is 64% above median its 10-year median of 6.39 and 265.9% above the Biotechnology industry median of 2.87. Probiotix Health's overall GF Score™ is 21/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Probiotix Health (AQSE:PBX), the current PB Ratio is 10.50 as of Sep. 16, 2026. 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.
Is Probiotix Health (AQSE:PBX) Overvalued in 2026?
Based on GuruFocus' analysis, Probiotix Health stock appears to be overvalued.
The current stock price of £0.11 is trading 5% above its estimated GF Value™ of £0.10.
GuruFocus considers Probiotix Health to be Fairly Valued.
Key valuation signals for AQSE:PBX:
PB Ratio: 10.50 (64% above median its 10-year median of 6.39)
GF Value™: £0.10 vs. price of £0.11 (5% above fair value)
Industry Position: 265.9% above the Biotechnology median (#1075 of 1223)
No single metric tells the full story. See the AQSE:PBX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Probiotix Health PLC is a life sciences company that develops probiotics to tackle cardiovascular disease and other lifestyle conditions that are affecting growing numbers of people across the world. The company has one class of business, in three geographical areas, being that of identifying and developing microbial strains, compounds and formulations for use in the nutraceutical industry. Its geographical segments include the United Kingdom, the United States, and the Rest of the World. It generates the majority of its revenue from the United States.
21GF Score
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