Guanajuato Silver CoSTU:E35B 32 Piotroski F-Score is 5 as of Jul. 01, 2026, which is 67% above its 10-year median of 3.00. GuruFocus rates STU:E35B with a GF Score™ of 32/100 and a GF Value™ of €0.14 (Significantly Overvalued). The stock has 4 warning signs investors should review. Among 2,506 Metals & Mining companies, Guanajuato Silver Co ranks better than 85.91% on this metric.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Guanajuato Silver Co has an F-score of 5 indicating the company's financial situation is typical for a stable company.
The historical rank and industry rank for Guanajuato Silver Co's Piotroski F-Score or its related term are showing as below:
STU:E35B'
s Piotroski F-Score Range Over the Past 10 Years
Min: 1 Med: 3 Max: 6
Current: 5
During the past 13 years, the highest Piotroski F-Score of Guanajuato Silver Co was 6. The lowest was 1. And the median was 3.
Guanajuato Silver Co (STU:E35B) Piotroski F-Score Explanation
The developer of the system is Joseph D. Piotroski is relatively unknown accounting professor who shuns publicity and rarely gives interviews.
He graduated from the University of Illinois with a B.S. in accounting in 1989, received an M.B.A. from Indiana University in 1994. Five years later, in 1999, after earning a Ph.D. in accounting from the University of Michigan, he became an associate professor of accounting at the University of Chicago.
He wanted to see if he can develop a system (using a simple nine-point scoring system) that can increase the returns of a strategy of investing in low price to book (referred to in the paper as high book to market) value companies.
What he found was something that exceeded his most optimistic expectations.
Buying only those companies that scored highest (8 or 9) on his nine-point scale, or F-Score as he called it, over the 20 year period from 1976 to 1996 led to an average out-performance over the market of 13.4%.
Even more impressive were the results of a strategy of investing in the highest F-Score companies (8 or 9) and shorting companies with the lowest F-Score (0 or 1).
Over the same period from 1976 to 1996 (20 years) this strategy led to an average yearly return of 23%, substantially outperforming the average S&P 500 index return of 15.83% over the same period.
Guanajuato Silver Co Piotroski F-Score Related Terms
Guanajuato Silver Co Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Guanajuato Silver Co's Piotroski F-Score 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 Silver subindustry, Guanajuato Silver Co's Piotroski F-Score, along with its competitors' market caps and Piotroski F-Score 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.
Guanajuato Silver Co Piotroski F-Score vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Guanajuato Silver Co's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Guanajuato Silver Co's Piotroski F-Score falls into.
* 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.
*Note: If the latest quarterly/semi-annual/annual total assets data is 0, then we will use previous quarterly/semi-annual/annual data for all the items in the balance sheet.
Profitability
Question 1. Return on Assets (ROA)
Net income before extraordinary items for the year divided by Total Assets at the beginning of the year.
Score 1 if positive, 0 if negative.
Guanajuato Silver Co's current Net Income (TTM) was -25.10.
==> Negative ==> Score 0.
Question 2. Cash Flow Return on Assets (CFROA)
Net cash flow from operating activities (operating cash flow) divided by Total Assets at the beginning of the year.
Guanajuato Silver Co's return on assets of this year was -0.38430087. Guanajuato Silver Co's return on assets of last year was -0.16540049.
==> Last year is higher ==> Score 0.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Guanajuato Silver Co's gearing of this year was 0.16328048. Guanajuato Silver Co's gearing of last year was 0.04565295.
==> Last year is lower than this year ==> Score 0.
Question 6. Change in Working Capital (Liquidity)
Compare this year's current ratio (current assets divided by current liabilities) to last year's current ratio.
Score 1 if this year's current ratio is higher, 0 if it's lower
Guanajuato Silver Co's current ratio of this year was 1.09867669. Guanajuato Silver Co's current ratio of last year was 0.55236491.
==> This year's current ratio is higher. ==> Score 1.
Question 7. Change in Shares in Issue
Compare the number of shares in issue this year, to the number in issue last year.
Score 0 if there is larger number of shares in issue this year, 1 otherwise.
Guanajuato Silver Co's number of shares in issue this year was 758.636. Guanajuato Silver Co's number of shares in issue last year was 472.187.
==> There is larger number of shares in issue this year. ==> Score 0.
Efficiency
Question 8. Change in Gross Margin
Compare this year's gross margin (Gross Profit divided by sales) to last year's.
Score 1 if this year's gross margin is higher, 0 if it's lower.
Guanajuato Silver Co's gross margin of this year was 0.20244356. Guanajuato Silver Co's gross margin of last year was 0.11389116.
==> This year's gross margin is higher. ==> Score 1.
Question 9. Change in asset turnover
Compare this year's asset turnover (total sales for the year divided by total assets at the beginning of the year) to last year's asset turnover ratio.
Score 1 if this year's asset turnover ratio is higher, 0 if it's lower
Guanajuato Silver Co's asset turnover of this year was 1.32479365. Guanajuato Silver Co's asset turnover of last year was 1.07175666.
==> This year's asset turnover is higher. ==> Score 1.
Evaluation
Piotroski F-Score
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Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Guanajuato Silver Co has an F-score of 5 indicating the company's financial situation is typical for a stable company.
Guanajuato Silver Co (STU:E35B) has a Piotroski F-Score of 5 as of Jul. 01, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Guanajuato Silver Co and its competitors. This is 67% above median its historical median of 3.00. Over the past decade, Guanajuato Silver Co's Piotroski F-Score has ranged from 1.00 to 6.00. According to the industry distribution chart, Guanajuato Silver Co ranks #353 out of 2506 companies in the Metals & Mining industry, placing it in the top 14.1%.
Is Guanajuato Silver Co's Piotroski F-Score too high?
Guanajuato Silver Co's current Piotroski F-Score of 5 is 67% above median its 10-year median of 3.00. Over the past 10 years, this metric has ranged from a low of 1.00 to a high of 6.00. The Metals & Mining industry median Piotroski F-Score is 3.00. Guanajuato Silver Co's value of 5 is 66.7% above this industry median. Based on the distribution chart, Guanajuato Silver Co ranks #353 out of 2506 companies in the Metals & Mining industry, which is in the top quartile — a strong position relative to peers. Overall, Guanajuato Silver Co has a GF Score™ of 32/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Guanajuato Silver Co's Piotroski F-Score compare to EXK?
According to the Metals & Mining industry distribution chart, Guanajuato Silver Co ranks #353 out of 2506 companies for Piotroski F-Score. This places Guanajuato Silver Co in the top 14% of its industry — outperforming the majority of peers. The industry median Piotroski F-Score is 3.00. Guanajuato Silver Co's value of 5 is 66.7% above this benchmark. Historically, Guanajuato Silver Co's own Piotroski F-Score has ranged from 1.00 to 6.00 over the past decade. While the company's 10-year median is 3.00 vs. the industry median of 3.00, Guanajuato Silver Co 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 Piotroski F-Score for a Metals & Mining company?
The median Piotroski F-Score among Metals & Mining companies is 3.00, based on 2,506 companies in the industry. Companies in the top quartile (top 25%) have a Piotroski F-Score significantly above this median, while those in the bottom quartile fall well below. However, Piotroski F-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Guanajuato Silver Co's current Piotroski F-Score of 5 is 66.7% 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 Piotroski F-Score mean?
A high Piotroski F-Score can signal that a stock is expensive relative to its fundamentals. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Guanajuato Silver Co and its competitors. For the Metals & Mining industry, the median Piotroski F-Score is 3.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Guanajuato Silver Co's current Piotroski F-Score is 5, which is 67% above median its own 10-year median of 3.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Guanajuato Silver Co stock overvalued right now?
Based on GuruFocus' analysis, Guanajuato Silver Co (STU:E35B) is currently considered Significantly Overvalued. The stock's GF Value™ is €0.14, compared to a current price of €0.28 — trading 97.9% above its estimated fair value. The current Piotroski F-Score is 5, which is 67% above median its 10-year median of 3.00 and 66.7% above the Metals & Mining industry median of 3.00. Guanajuato Silver Co's overall GF Score™ is 32/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Piotroski F-Score calculated?
Piotroski F-Score is calculated from a company's financial statements. For Guanajuato Silver Co (STU:E35B), the current Piotroski F-Score is 5 as of Jul. 01, 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 Guanajuato Silver Co (STU:E35B) Overvalued in 2026?
Based on GuruFocus' analysis, Guanajuato Silver Co stock appears to be overvalued.
The current stock price of €0.28 is trading 97.9% above its estimated GF Value™ of €0.14.
GuruFocus considers Guanajuato Silver Co to be Significantly Overvalued.
Key valuation signals for STU:E35B:
Piotroski F-Score: 5 (67% above median its 10-year median of 3.00)
GF Value™: €0.14 vs. price of €0.28 (97.9% above fair value)
Industry Position: 66.7% above the Metals & Mining median (#353 of 2506)
No single metric tells the full story. See the STU:E35B stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Guanajuato Silver Co Ltd is a precious metals producer engaged in reactivating past producing silver and gold mines near the city of Guanajuato, Mexico. The Company produces silver and gold at the El Cubo mine and mill (the El Cubo Mines Complex); the Valenciana Mines Complex, including the Cata processing plant; and the San Ignacio Mine, and produces silver, gold, zinc, and lead at the Topia mine in Mexico, and the Bolanitos gold-silver mine. The group has reportable operating segments in Mexico. The El Cubo Mines Complex, Valenciana Mines Complex, and San Ignacio Mine segments are located in the state of Guanajuato, Mexico. The Topia segment is located in the state of Durango, Mexico.
32GF Score
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