Tombill MinesTBLLF Piotroski F-Score is 3 as of Jun. 25, 2026, which is at its 10-year median of 3.00. The stock has 3 warning signs investors should review. Among 2,511 Metals & Mining companies, Tombill Mines ranks better than 59.14% on this metric.
Warning Sign:
Piotroski F-Score of 3 is low, which usually implies poor business operation.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Tombill Mines has an F-score of 3. It is a bad or low score, which usually implies poor business operation.
The historical rank and industry rank for Tombill Mines's Piotroski F-Score or its related term are showing as below:
TBLLF'
s Piotroski F-Score Range Over the Past 10 Years
Min: 2 Med: 3 Max: 4
Current: 3
During the past 7 years, the highest Piotroski F-Score of Tombill Mines was 4. The lowest was 2. And the median was 3.
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.
Tombill Mines Piotroski F-Score Related Terms
Tombill Mines Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Tombill Mines'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 Gold subindustry, Tombill Mines'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.
Tombill Mines Piotroski F-Score vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Tombill Mines's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Tombill Mines'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.
Tombill Mines's current Net Income (TTM) was -0.29.
==> 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.
Tombill Mines's return on assets of this year was -6.61363636. Tombill Mines's return on assets of last year was -0.73831776.
==> Last year is higher ==> Score 0.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Tombill Mines's current ratio of this year was 0.89855072. Tombill Mines's current ratio of last year was 0.55696203.
==> 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.
Tombill Mines's number of shares in issue this year was 263.503. Tombill Mines's number of shares in issue last year was 221.503.
==> 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.
Tombill Mines's gross margin of this year was . Tombill Mines's gross margin of last year was .
==> Last year's gross margin is higher ==> Score 0.
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
Tombill Mines's asset turnover of this year was 0. Tombill Mines's asset turnover of last year was 0.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
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Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Tombill Mines has an F-score of 3. It is a bad or low score, which usually implies poor business operation.
Tombill Mines (TBLLF) has a Piotroski F-Score of 3 as of Jun. 25, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Tombill Mines and its competitors. This is near median its historical median of 3.00. Over the past decade, Tombill Mines' Piotroski F-Score has ranged from 2.00 to 4.00. According to the industry distribution chart, Tombill Mines ranks #1026 out of 2511 companies in the Metals & Mining industry, placing it in the top 40.9%.
Is Tombill Mines' Piotroski F-Score too high?
Tombill Mines' current Piotroski F-Score of 3 is near median its 10-year median of 3.00. Over the past 10 years, this metric has ranged from a low of 2.00 to a high of 4.00. The Metals & Mining industry median Piotroski F-Score is 3.00. Tombill Mines' value of 3 is 0% at this industry median. Based on the distribution chart, Tombill Mines ranks #1026 out of 2511 companies in the Metals & Mining industry, which is above the industry midpoint.
How does Tombill Mines' Piotroski F-Score compare to NEM and AU?
According to the Metals & Mining industry distribution chart, Tombill Mines ranks #1026 out of 2511 companies for Piotroski F-Score. This puts Tombill Mines in the upper half of its industry. The industry median Piotroski F-Score is 3.00. Tombill Mines' value of 3 is 0% at this benchmark. Historically, Tombill Mines' own Piotroski F-Score has ranged from 2.00 to 4.00 over the past decade. While the company's 10-year median is 3.00 vs. the industry median of 3.00, Tombill Mines has consistently been at 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 2,511 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. Tombill Mines's current Piotroski F-Score of 3 is 0% at 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 Tombill Mines 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. Tombill Mines's current Piotroski F-Score is 3, which is near 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 Tombill Mines stock overvalued right now?
Tombill Mines (TBLLF) has a current Piotroski F-Score of 3. The current Piotroski F-Score is 3, which is near median its 10-year median of 3.00 and 0% at the Metals & Mining industry median of 3.00. 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 Tombill Mines (TBLLF), the current Piotroski F-Score is 3 as of Jun. 25, 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.
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