National Aluminium CoBOM:532234 +4.67%83 Piotroski F-Score is 8 as of Jul. 06, 2026, which is at its 10-year median of 8.00. GuruFocus rates BOM:532234 with a GF Score™ of 83/100 and a GF Value™ of ₹215.31 (Significantly Overvalued). The stock has 1 warning sign investors should review. Among 2,504 Metals & Mining companies, National Aluminium Co ranks better than 99% on this metric.
Good Sign:
Piotroski F-Score is 8, indicates a very healthy situation.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
National Aluminium Co has an F-score of 8. It is a good or high score, which usually indicates a very healthy situation.
The historical rank and industry rank for National Aluminium Co's Piotroski F-Score or its related term are showing as below:
BOM:532234'
s Piotroski F-Score Range Over the Past 10 Years
Min: 2 Med: 8 Max: 9
Current: 8
During the past 13 years, the highest Piotroski F-Score of National Aluminium Co was 9. The lowest was 2. And the median was 8.
National Aluminium Co (BOM:532234) 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.
National Aluminium Co Piotroski F-Score Related Terms
National Aluminium Co Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for National Aluminium 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 Aluminum subindustry, National Aluminium 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.
National Aluminium Co Piotroski F-Score vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, National Aluminium Co's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where National Aluminium 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.
National Aluminium Co's current Net Income (TTM) was 52,679.
==> 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.
Score 1 if positive, 0 if negative.
National Aluminium Co's current Cash Flow from Operations (TTM) was 58,061.
==> Positive ==> Score 1.
Question 3. Change in Return on Assets
Compare this year's return on assets (1) to last year's return on assets.
National Aluminium Co's return on assets of this year was 0.2738722. National Aluminium Co's return on assets of last year was 0.11281012.
==> This year is higher. ==> Score 1.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
National Aluminium Co's gearing of this year was 0.00856182. National Aluminium Co's gearing of last year was 0.0027671.
==> 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
National Aluminium Co's current ratio of this year was 2.6125779. National Aluminium Co's current ratio of last year was 1.89268913.
==> 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.
National Aluminium Co's number of shares in issue this year was 1836.632. National Aluminium Co's number of shares in issue last year was 1836.632.
==> 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.
National Aluminium Co's gross margin of this year was 0.568858. National Aluminium Co's gross margin of last year was 0.3757938.
==> 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
National Aluminium Co's asset turnover of this year was 0.86624196. National Aluminium Co's asset turnover of last year was 0.74149936.
==> 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
National Aluminium Co has an F-score of 8. It is a good or high score, which usually indicates a very healthy situation.
National Aluminium Co (BOM:532234) has a Piotroski F-Score of 8 as of Jul. 06, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on National Aluminium Co and its competitors. This is near median its historical median of 8.00. Over the past decade, National Aluminium Co's Piotroski F-Score has ranged from 2.00 to 9.00. According to the industry distribution chart, National Aluminium Co ranks #25 out of 2504 companies in the Metals & Mining industry, placing it in the top 1%.
Is National Aluminium Co's Piotroski F-Score too high?
National Aluminium Co's current Piotroski F-Score of 8 is near median its 10-year median of 8.00. Over the past 10 years, this metric has ranged from a low of 2.00 to a high of 9.00. The Metals & Mining industry median Piotroski F-Score is 3.00. National Aluminium Co's value of 8 is 166.7% above this industry median. Based on the distribution chart, National Aluminium Co ranks #25 out of 2504 companies in the Metals & Mining industry, which is in the top quartile — a strong position relative to peers. Overall, National Aluminium Co has a GF Score™ of 83/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does National Aluminium Co's Piotroski F-Score compare to AA?
According to the Metals & Mining industry distribution chart, National Aluminium Co ranks #25 out of 2504 companies for Piotroski F-Score. This places National Aluminium Co in the top 1% of its industry — outperforming the majority of peers. The industry median Piotroski F-Score is 3.00. National Aluminium Co's value of 8 is 166.7% above this benchmark. Historically, National Aluminium Co's own Piotroski F-Score has ranged from 2.00 to 9.00 over the past decade. While the company's 10-year median is 8.00 vs. the industry median of 3.00, National Aluminium 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 2,504 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. National Aluminium Co's current Piotroski F-Score of 8 is 166.7% 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 National Aluminium 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. National Aluminium Co's current Piotroski F-Score is 8, which is near median its own 10-year median of 8.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is National Aluminium Co stock overvalued right now?
Based on GuruFocus' analysis, National Aluminium Co (BOM:532234) is currently considered Significantly Overvalued. The stock's GF Value™ is ₹215.31, compared to a current price of ₹347.70 — trading 61.5% above its estimated fair value. The current Piotroski F-Score is 8, which is near median its 10-year median of 8.00 and 166.7% above the Metals & Mining industry median of 3.00. National Aluminium Co's overall GF Score™ is 83/100 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 National Aluminium Co (BOM:532234), the current Piotroski F-Score is 8 as of Jul. 06, 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 National Aluminium Co (BOM:532234) Overvalued in 2026?
Based on GuruFocus' analysis, National Aluminium Co stock appears to be overvalued.
The current stock price of ₹347.70 is trading 61.5% above its estimated GF Value™ of ₹215.31.
GuruFocus considers National Aluminium Co to be Significantly Overvalued.
Key valuation signals for BOM:532234:
Piotroski F-Score: 8 (near median its 10-year median of 8.00)
GF Value™: ₹215.31 vs. price of ₹347.70 (61.5% above fair value)
Industry Position: 166.7% above the Metals & Mining median (#25 of 2504)
No single metric tells the full story. See the BOM:532234 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
National Aluminium Co Ltd mines, produces and sells aluminum and alumina-based products in two segments: Aluminium and Chemicals. The company controls all stages of the aluminum process. The firm mines bauxite and refines it into alumina, then smelts maximum of the alumina into aluminum. The aluminum segment, which generates the majority of revenue, sells aluminum-based products. The chemicals segment sells calcinated alumina and alumina hydrate. The firm also owns and operates multiple power plants throughout India. The company derives maximum revenue from Aluminum segment.
83GF Score
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