Kumba Iron OreSTU:KUI -1.28%76 Piotroski F-Score is 6 as of Jun. 24, 2026, which is 14% below its 10-year median of 7.00. GuruFocus rates STU:KUI with a GF Score™ of 76/100 and a GF Value™ of €18.40 (Modestly Undervalued). The stock has 5 warning signs investors should review. Among 625 Steel companies, Kumba Iron Ore ranks better than 78.72% 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
Kumba Iron Ore 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 Kumba Iron Ore's Piotroski F-Score or its related term are showing as below:
STU:KUI'
s Piotroski F-Score Range Over the Past 10 Years
Min: 5 Med: 7 Max: 8
Current: 6
During the past 13 years, the highest Piotroski F-Score of Kumba Iron Ore was 8. The lowest was 5. And the median was 7.
Kumba Iron Ore (STU:KUI) 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.
Kumba Iron Ore Piotroski F-Score Related Terms
Kumba Iron Ore Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Kumba Iron Ore'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.
STU:KUI vs NUE, STLD, RS: Piotroski F-Score Comparison
For the Steel subindustry, Kumba Iron Ore'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.
Kumba Iron Ore Piotroski F-Score vs Steel Industry
For the Steel industry and Basic Materials sector, Kumba Iron Ore's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Kumba Iron Ore'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.
Kumba Iron Ore's current Net Income (TTM) was 741.
==> Positive ==> Score 1.
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.
Kumba Iron Ore's return on assets of this year was 0.14320778. Kumba Iron Ore's return on assets of last year was 0.1585885.
==> Last year is higher ==> Score 0.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Kumba Iron Ore's gearing of this year was 0.00105962. Kumba Iron Ore's gearing of last year was 0.00073125.
==> 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
Kumba Iron Ore's current ratio of this year was 2.4581017. Kumba Iron Ore's current ratio of last year was 2.72011497.
==> 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.
Kumba Iron Ore's number of shares in issue this year was 321.591. Kumba Iron Ore's number of shares in issue last year was 321.673.
==> There is smaller number of shares in issue this year, or the same. ==> Score 1.
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.
Kumba Iron Ore's gross margin of this year was 0.88541195. Kumba Iron Ore's gross margin of last year was 0.84708646.
==> 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
Kumba Iron Ore's asset turnover of this year was 0.68685035. Kumba Iron Ore's asset turnover of last year was 0.73936424.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
Piotroski F-Score
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Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Kumba Iron Ore has an F-score of 5 indicating the company's financial situation is typical for a stable company.
Kumba Iron Ore (STU:KUI) has a Piotroski F-Score of 6 as of Jun. 24, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Kumba Iron Ore and its competitors. This is 14% below median its historical median of 7.00. Over the past decade, Kumba Iron Ore's Piotroski F-Score has ranged from 5.00 to 8.00. According to the industry distribution chart, Kumba Iron Ore ranks #133 out of 625 companies in the Steel industry, placing it in the top 21.3%.
Is Kumba Iron Ore's Piotroski F-Score too high?
Kumba Iron Ore's current Piotroski F-Score of 6 is 14% below median its 10-year median of 7.00. Over the past 10 years, this metric has ranged from a low of 5.00 to a high of 8.00. The Steel industry median Piotroski F-Score is 5.00. Kumba Iron Ore's value of 6 is 20% above this industry median. Based on the distribution chart, Kumba Iron Ore ranks #133 out of 625 companies in the Steel industry, which is in the top quartile — a strong position relative to peers. Overall, Kumba Iron Ore has a GF Score™ of 76/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Kumba Iron Ore's Piotroski F-Score compare to NUE and STLD?
According to the Steel industry distribution chart, Kumba Iron Ore ranks #133 out of 625 companies for Piotroski F-Score. This places Kumba Iron Ore in the top 21% of its industry — outperforming the majority of peers. The industry median Piotroski F-Score is 5.00. Kumba Iron Ore's value of 6 is 20% above this benchmark. Historically, Kumba Iron Ore's own Piotroski F-Score has ranged from 5.00 to 8.00 over the past decade. While the company's 10-year median is 7.00 vs. the industry median of 5.00, Kumba Iron Ore 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 Steel company?
The median Piotroski F-Score among Steel companies is 5.00, based on 625 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. Kumba Iron Ore's current Piotroski F-Score of 6 is 20% 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 Kumba Iron Ore and its competitors. For the Steel industry, the median Piotroski F-Score is 5.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Kumba Iron Ore's current Piotroski F-Score is 6, which is 14% below median its own 10-year median of 7.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Kumba Iron Ore stock overvalued right now?
Based on GuruFocus' analysis, Kumba Iron Ore (STU:KUI) is currently considered Modestly Undervalued. The stock's GF Value™ is €18.40, compared to a current price of €15.40 — trading 16.3% below its estimated fair value. The current Piotroski F-Score is 6, which is 14% below median its 10-year median of 7.00 and 20% above the Steel industry median of 5.00. Kumba Iron Ore's overall GF Score™ is 76/100 with 5 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 Kumba Iron Ore (STU:KUI), the current Piotroski F-Score is 6 as of Jun. 24, 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 Kumba Iron Ore (STU:KUI) Overvalued in 2026?
Based on GuruFocus' analysis, Kumba Iron Ore stock appears to be undervalued.
The current stock price of €15.40 is trading 16.3% below its estimated GF Value™ of €18.40.
GuruFocus considers Kumba Iron Ore to be Modestly Undervalued.
Key valuation signals for STU:KUI:
Piotroski F-Score: 6 (14% below median its 10-year median of 7.00)
GF Value™: €18.40 vs. price of €15.40 (16.3% below fair value)
Industry Position: 20% above the Steel median (#133 of 625)
No single metric tells the full story. See the STU:KUI stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Kumba Iron Ore Ltd is engaged in the exploration, mining, processing, blending, and sale of iron ore to the steel industry. The company operates in South Africa, with mining operations in the Northern Cape and Limpopo provinces, as well as a head office in Centurion, Gauteng, and a port operation in Saldanha Bay, Western Cape. The company's flagship asset is the Sishen mine, which it holds a majority stake in, located near the town of Kathu in the Northern Cape Province. The Sishen mine is opencast and produces the bulk of the group's iron ore, which is exported. It also holds an interest in the Kolomela mine. The company also generates revenue from Shipping operations. The majority of the company's revenue is generated from its products.
76GF Score
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