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Nexa ResourcesSTU:NE0 +4.31%60 Piotroski F-Score is 8 as of Sep. 09, 2026, which is 33% above its 10-year median of 6.00. GuruFocus rates STU:NE0 with a GF Score™ of 60/100 and a GF Value™ of €7.88 (Significantly Overvalued). The stock has 1 warning sign investors should review. Among 2,525 Metals & Mining companies, Nexa Resources ranks better than 98.89% 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
Nexa Resources 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 Nexa Resources's Piotroski F-Score or its related term are showing as below:
STU:NE0'
s Piotroski F-Score Range Over the Past 10 Years
Min: 3 Med: 6 Max: 8
Current: 8
During the past 12 years, the highest Piotroski F-Score of Nexa Resources was 8. The lowest was 3. And the median was 6.
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.
Nexa Resources Piotroski F-Score Related Terms
Nexa Resources Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Nexa Resources'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:NE0 vs EMAT, TMC, IMC: Piotroski F-Score Comparison
For the Other Industrial Metals & Mining subindustry, Nexa Resources'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.
Nexa Resources Piotroski F-Score vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Nexa Resources's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Nexa Resources'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.
Nexa Resources's current Net Income (TTM) was 239.
==> 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.
Nexa Resources's return on assets of this year was 0.05653105. Nexa Resources's return on assets of last year was -0.0200955.
==> This year is higher. ==> Score 1.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Nexa Resources's gearing of this year was 0.33227409. Nexa Resources's gearing of last year was 0.36138967.
==> 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
Nexa Resources's current ratio of this year was 0.79527593. Nexa Resources's current ratio of last year was 0.92646634.
==> 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.
Nexa Resources's number of shares in issue this year was 132.439. Nexa Resources's number of shares in issue last year was 132.439.
==> 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.
Nexa Resources's gross margin of this year was 0.28401909. Nexa Resources's gross margin of last year was 0.19002809.
==> 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
Nexa Resources's asset turnover of this year was 0.7047871. Nexa Resources's asset turnover of last year was 0.58822775.
==> 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
Nexa Resources has an F-score of 8. It is a good or high score, which usually indicates a very healthy situation.
Nexa Resources (STU:NE0) has a Piotroski F-Score of 8 as of Sep. 09, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Nexa Resources and its competitors. This is 33% above median its historical median of 6.00. Over the past decade, Nexa Resources' Piotroski F-Score has ranged from 3.00 to 8.00. According to the industry distribution chart, Nexa Resources ranks #28 out of 2525 companies in the Metals & Mining industry, placing it in the top 1.1%.
Is Nexa Resources' Piotroski F-Score too high?
Nexa Resources' current Piotroski F-Score of 8 is 33% above median its 10-year median of 6.00. Over the past 10 years, this metric has ranged from a low of 3.00 to a high of 8.00. The Metals & Mining industry median Piotroski F-Score is 3.00. Nexa Resources' value of 8 is 166.7% above this industry median. Based on the distribution chart, Nexa Resources ranks #28 out of 2525 companies in the Metals & Mining industry, which is in the top quartile — a strong position relative to peers. Overall, Nexa Resources has a GF Score™ of 60/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Nexa Resources' Piotroski F-Score compare to EMAT and TMC?
According to the Metals & Mining industry distribution chart, Nexa Resources ranks #28 out of 2525 companies for Piotroski F-Score. This places Nexa Resources in the top 1% of its industry — outperforming the majority of peers. The industry median Piotroski F-Score is 3.00. Nexa Resources' value of 8 is 166.7% above this benchmark. Historically, Nexa Resources' own Piotroski F-Score has ranged from 3.00 to 8.00 over the past decade. While the company's 10-year median is 6.00 vs. the industry median of 3.00, Nexa Resources 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 2,525 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. Nexa Resources'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 Nexa Resources 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. Nexa Resources's current Piotroski F-Score is 8, which is 33% above median its own 10-year median of 6.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Nexa Resources stock overvalued right now?
Based on GuruFocus' analysis, Nexa Resources (STU:NE0) is currently considered Significantly Overvalued. The stock's GF Value™ is €7.88, compared to a current price of €12.10 — trading 53.6% above its estimated fair value. The current Piotroski F-Score is 8, which is 33% above median its 10-year median of 6.00 and 166.7% above the Metals & Mining industry median of 3.00. Nexa Resources' overall GF Score™ is 60/100 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 Nexa Resources (STU:NE0), the current Piotroski F-Score is 8 as of Sep. 09, 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 Nexa Resources (STU:NE0) Overvalued in 2026?
Based on GuruFocus' analysis, Nexa Resources stock appears to be overvalued.
The current stock price of €12.10 is trading 53.6% above its estimated GF Value™ of €7.88.
GuruFocus considers Nexa Resources to be Significantly Overvalued.
Key valuation signals for STU:NE0:
Piotroski F-Score: 8 (33% above median its 10-year median of 6.00)
GF Value™: €7.88 vs. price of €12.10 (53.6% above fair value)
Industry Position: 166.7% above the Metals & Mining median (#28 of 2525)
No single metric tells the full story. See the STU:NE0 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Nexa Resources SA operate large-scale, mechanized underground and open pit mines, as well as smelters. The company operates through two segments namely Mining and Smelting. Its Mining segment consists of various operating units includes mineral exploration activities and the production of zinc concentrates, copper concentrates and concentrates. The Smelting segment comprises operating units which include facilities recovering and refining zinc metal out of feed materials such as zinc concentrates or secondary feed materials. It generates maximum revenue from the Smelting segment. Geographically It has a presence in Brazil, Peru, the United States of America, Switzerland, Japan, Argentina, South Korea, Colombia, Vietnam, Malaysia and other countries.
60GF Score
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