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Clean Teq WaterSTU:9NK -0.78%33 PB Ratio is 4.20 as of Jul. 15, 2026, which is 63% above its 10-year median of 2.57. GuruFocus rates STU:9NK with a GF Score™ of 33/100 and a GF Value™ of €0.20 (Modestly Overvalued). The stock has 5 warning signs investors should review. Among 501 Utilities - Regulated companies, Clean Teq Water ranks worse than 92.61% 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 (2026-07-15), Clean Teq Water's share price is €0.256. Clean Teq Water's Book Value per Share for the quarter that ended in Dec. 2025 was €0.06. Hence, Clean Teq Water's PB Ratio of today is 4.20.
The historical rank and industry rank for Clean Teq Water's PB Ratio or its related term are showing as below:
STU:9NK'
s PB Ratio Range Over the Past 10 Years
Min: 1.2 Med: 2.57 Max: 9.82
Current: 4.13
During the past 4 years, Clean Teq Water's highest PB Ratio was 9.82. The lowest was 1.20. And the median was 2.57.
STU:9NK's PB Ratio is ranked worse than 92.61% of 501
companies
in the Utilities - Regulated industry
Industry Median: 1.43
vs STU:9NK: 4.13
During the past 12 months, Clean Teq Water's average Book Value Per Share Growth Rate was 72.60% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was -33.70% per year.
During the past 4 years, the highest 3-Year average Book Value Per Share Growth Rate of Clean Teq Water was -33.70% per year. The lowest was -33.70% per year. And the median was -33.70% 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.
Clean Teq Water PB Ratio Related Terms
Clean Teq Water PB Ratio Historical Data
* Premium members only.
The historical data trend for Clean Teq Water'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.
For the Utilities - Regulated Water subindustry, Clean Teq Water'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.
Clean Teq Water PB Ratio vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Clean Teq Water's PB Ratio distribution charts can be found below:
* The bar in red indicates where Clean Teq Water'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.
Clean Teq Water's PB Ratio for today is calculated as follows:
* 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.
Clean Teq Water (STU:9NK) has a PB Ratio of 4.20 as of Jul. 15, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Clean Teq Water and its competitors. This is 63% above median its historical median of 2.57. Over the past decade, Clean Teq Water's PB Ratio has ranged from 1.20 to 9.82. According to the industry distribution chart, Clean Teq Water ranks #464 out of 501 companies in the Utilities - Regulated industry, placing it in the top 92.6%.
Is Clean Teq Water's PB Ratio too high?
Clean Teq Water's current PB Ratio of 4.20 is 63% above median its 10-year median of 2.57. Over the past 10 years, this metric has ranged from a low of 1.20 to a high of 9.82. The Utilities - Regulated industry median PB Ratio is 1.43. Clean Teq Water's value of 4.20 is 193.7% above this industry median. Based on the distribution chart, Clean Teq Water ranks #464 out of 501 companies in the Utilities - Regulated industry, which is in the bottom quartile relative to peers. Overall, Clean Teq Water has a GF Score™ of 33/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Clean Teq Water's PB Ratio compare to AWK and WTRG?
According to the Utilities - Regulated industry distribution chart, Clean Teq Water ranks #464 out of 501 companies for PB Ratio. This places Clean Teq Water in the lower half of its industry. The industry median PB Ratio is 1.43. Clean Teq Water's value of 4.20 is 193.7% above this benchmark. Historically, Clean Teq Water's own PB Ratio has ranged from 1.20 to 9.82 over the past decade. While the company's 10-year median is 2.57 vs. the industry median of 1.43, Clean Teq Water 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 an Utilities - Regulated company?
The median PB Ratio among Utilities - Regulated companies is 1.43, based on 501 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. Clean Teq Water's current PB Ratio of 4.20 is 193.7% 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 Clean Teq Water and its competitors. For the Utilities - Regulated industry, the median PB Ratio is 1.43 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Clean Teq Water's current PB Ratio is 4.20, which is 63% above median its own 10-year median of 2.57. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Clean Teq Water stock overvalued right now?
Based on GuruFocus' analysis, Clean Teq Water (STU:9NK) is currently considered Modestly Overvalued. The stock's GF Value™ is €0.20, compared to a current price of €0.26 — trading 28% above its estimated fair value. The current PB Ratio is 4.20, which is 63% above median its 10-year median of 2.57 and 193.7% above the Utilities - Regulated industry median of 1.43. Clean Teq Water's overall GF Score™ is 33/100 with 5 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 Clean Teq Water (STU:9NK), the current PB Ratio is 4.20 as of Jul. 15, 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 Clean Teq Water (STU:9NK) Overvalued in 2026?
Based on GuruFocus' analysis, Clean Teq Water stock appears to be overvalued.
The current stock price of €0.26 is trading 28% above its estimated GF Value™ of €0.20.
GuruFocus considers Clean Teq Water to be Modestly Overvalued.
Key valuation signals for STU:9NK:
PB Ratio: 4.20 (63% above median its 10-year median of 2.57)
GF Value™: €0.20 vs. price of €0.26 (28% above fair value)
Industry Position: 193.7% above the Utilities - Regulated median (#464 of 501)
No single metric tells the full story. See the STU:9NK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Clean Teq Water Ltd provides inventive metals recovery and water treatment solutions for governments and companies. Its technology solutions include desalination, nutrient removal, zero liquid discharge and hardness removal. It focuses on sectors such as municipal wastewater, surface water, industrial wastewater and mining process water. The company has offices and laboratories in Melbourne, Perth, Beijing and Tianjin, and partner offices in Africa and Latin America.
33GF Score
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