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Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
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.
Rottenstone Gold Piotroski F-Score Related Terms
Rottenstone Gold Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Rottenstone Gold'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 Other Industrial Metals & Mining subindustry, Rottenstone Gold'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.
Rottenstone Gold Piotroski F-Score vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Rottenstone Gold's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Rottenstone Gold'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.
Rottenstone Gold's current Net Income (TTM) was -0.13.
==> 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.
Rottenstone Gold's return on assets of this year was -0.49808429. Rottenstone Gold's return on assets of last year was -1.29945554.
==> This year is higher. ==> Score 1.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Rottenstone Gold's gearing of this year was 0. Rottenstone Gold's gearing of last year was 0.
==> This year is lower or equal to last year. ==> Score 1.
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
Rottenstone Gold's current ratio of this year was 0.5952381. Rottenstone Gold's current ratio of last year was 10.125.
==> Last year's current ratio is higher ==> Score 0.
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.
Rottenstone Gold's number of shares in issue this year was 29.986. Rottenstone Gold's number of shares in issue last year was 26.692.
==> 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.
Rottenstone Gold's gross margin of this year was . Rottenstone Gold'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
Rottenstone Gold's asset turnover of this year was 0. Rottenstone Gold's asset turnover of last year was 0.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
Piotroski F-Score
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3
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Rottenstone Gold has an F-score of 3. It is a bad or low score, which usually implies poor business operation.
Rottenstone Gold (XCNQ:SK) has a Piotroski F-Score of 3 as of Aug. 20, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Rottenstone Gold and its competitors. This is near median its historical median of 3.00. Over the past decade, Rottenstone Gold's Piotroski F-Score has ranged from 2.00 to 5.00.
Is Rottenstone Gold's Piotroski F-Score too high?
Rottenstone Gold's 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 5.00. The Metals & Mining industry median Piotroski F-Score is 3.00. Rottenstone Gold's value of 3 is 0% at this industry median. Overall, Rottenstone Gold has a GF Score™ of 42/100, reflecting its overall financial health beyond just this single metric.
How does Rottenstone Gold's Piotroski F-Score compare to competitors?
Rottenstone Gold's Piotroski F-Score of 3 can be compared against companies in the Metals & Mining industry. The industry median Piotroski F-Score is 3.00. Rottenstone Gold's value of 3 is 0% at this benchmark. Historically, Rottenstone Gold's own Piotroski F-Score has ranged from 2.00 to 5.00 over the past decade. While the company's 10-year median is 3.00 vs. the industry median of 3.00, Rottenstone Gold 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 2,506 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. Rottenstone Gold'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 Rottenstone Gold 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. Rottenstone Gold'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 Rottenstone Gold stock overvalued right now?
Rottenstone Gold (XCNQ:SK) 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. Rottenstone Gold's overall GF Score™ is 42/100 with 1 warning sign 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 Rottenstone Gold (XCNQ:SK), the current Piotroski F-Score is 3 as of Aug. 20, 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.
Rottenstone Gold Inc is in the business of exploring its mineral exploration assets. The company is in the exploration stage and holds mining project interests in Canada by way of its Rottenstone Project in Saskatchewan.
42GF Score
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