SGL Carbon SEWBO:SGL -3.34%63 Piotroski F-Score is 6 as of Jun. 25, 2026, which is 20% above its 10-year median of 5.00. GuruFocus rates WBO:SGL with a GF Score™ of 63/100 and a GF Value™ of €4.01 (Modestly Overvalued). The stock has 3 warning signs investors should review. Among 1,566 Chemicals companies, SGL Carbon SE ranks better than 76.18% 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
SGL Carbon SE has an F-score of 6 indicating the company's financial situation is typical for a stable company.
The historical rank and industry rank for SGL Carbon SE's Piotroski F-Score or its related term are showing as below:
WBO:SGL'
s Piotroski F-Score Range Over the Past 10 Years
Min: 3 Med: 5 Max: 8
Current: 6
During the past 13 years, the highest Piotroski F-Score of SGL Carbon SE was 8. The lowest was 3. And the median was 5.
SGL Carbon SE (WBO:SGL) 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.
SGL Carbon SE Piotroski F-Score Related Terms
SGL Carbon SE Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for SGL Carbon SE'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 Chemicals subindustry, SGL Carbon SE'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.
SGL Carbon SE Piotroski F-Score vs Chemicals Industry
For the Chemicals industry and Basic Materials sector, SGL Carbon SE's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where SGL Carbon SE'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.
SGL Carbon SE's current Net Income (TTM) was -67.2.
==> 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.
SGL Carbon SE's return on assets of this year was -0.05080133. SGL Carbon SE's return on assets of last year was -0.06646079.
==> This year is higher. ==> Score 1.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
SGL Carbon SE's gearing of this year was 0.18513977. SGL Carbon SE's gearing of last year was 0.15863177.
==> 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
SGL Carbon SE's current ratio of this year was 2.90338401. SGL Carbon SE's current ratio of last year was 2.68774704.
==> 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.
SGL Carbon SE's number of shares in issue this year was 118. SGL Carbon SE's number of shares in issue last year was 122.
==> 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.
SGL Carbon SE's gross margin of this year was 0.23350825. SGL Carbon SE's gross margin of last year was 0.2220423.
==> 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
SGL Carbon SE's asset turnover of this year was 0.60508013. SGL Carbon SE's asset turnover of last year was 0.66333244.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
Piotroski F-Score
=
Que. 1
+
Que. 2
+
Que. 3
+
Que. 4
+
Que. 5
+
Que. 6
+
Que. 7
+
Que. 8
+
Que. 9
=
0
+
1
+
1
+
1
+
0
+
1
+
1
+
1
+
0
=
6
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
SGL Carbon SE has an F-score of 6 indicating the company's financial situation is typical for a stable company.
SGL Carbon SE (WBO:SGL) has a Piotroski F-Score of 6 as of Jun. 25, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on SGL Carbon SE and its competitors. This is 20% above median its historical median of 5.00. Over the past decade, SGL Carbon SE's Piotroski F-Score has ranged from 3.00 to 8.00. According to the industry distribution chart, SGL Carbon SE ranks #373 out of 1566 companies in the Chemicals industry, placing it in the top 23.8%.
Is SGL Carbon SE's Piotroski F-Score too high?
SGL Carbon SE's current Piotroski F-Score of 6 is 20% above median its 10-year median of 5.00. Over the past 10 years, this metric has ranged from a low of 3.00 to a high of 8.00. The Chemicals industry median Piotroski F-Score is 5.00. SGL Carbon SE's value of 6 is 20% above this industry median. Based on the distribution chart, SGL Carbon SE ranks #373 out of 1566 companies in the Chemicals industry, which is in the top quartile — a strong position relative to peers. Overall, SGL Carbon SE has a GF Score™ of 63/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does SGL Carbon SE's Piotroski F-Score compare to DOW?
According to the Chemicals industry distribution chart, SGL Carbon SE ranks #373 out of 1566 companies for Piotroski F-Score. This places SGL Carbon SE in the top 24% of its industry — outperforming the majority of peers. The industry median Piotroski F-Score is 5.00. SGL Carbon SE's value of 6 is 20% above this benchmark. Historically, SGL Carbon SE's own Piotroski F-Score has ranged from 3.00 to 8.00 over the past decade. While the company's 10-year median is 5.00 vs. the industry median of 5.00, SGL Carbon SE 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 Chemicals company?
The median Piotroski F-Score among Chemicals companies is 5.00, based on 1,566 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. SGL Carbon SE'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 SGL Carbon SE and its competitors. For the Chemicals 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. SGL Carbon SE's current Piotroski F-Score is 6, which is 20% above median its own 10-year median of 5.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is SGL Carbon SE stock overvalued right now?
Based on GuruFocus' analysis, SGL Carbon SE (WBO:SGL) is currently considered Modestly Overvalued. The stock's GF Value™ is €4.01, compared to a current price of €4.64 — trading 15.6% above its estimated fair value. The current Piotroski F-Score is 6, which is 20% above median its 10-year median of 5.00 and 20% above the Chemicals industry median of 5.00. SGL Carbon SE's overall GF Score™ is 63/100 with 3 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 SGL Carbon SE (WBO:SGL), the current Piotroski F-Score is 6 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.
Is SGL Carbon SE (WBO:SGL) Overvalued in 2026?
Based on GuruFocus' analysis, SGL Carbon SE stock appears to be overvalued.
The current stock price of €4.64 is trading 15.6% above its estimated GF Value™ of €4.01.
GuruFocus considers SGL Carbon SE to be Modestly Overvalued.
Key valuation signals for WBO:SGL:
Piotroski F-Score: 6 (20% above median its 10-year median of 5.00)
GF Value™: €4.01 vs. price of €4.64 (15.6% above fair value)
Industry Position: 20% above the Chemicals median (#373 of 1566)
No single metric tells the full story. See the WBO:SGL stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
SGL Carbon SE produces carbon and graphite-based products, operating through segments like Composite Solutions, Graphite Solutions, Process Technology, Carbon Fibers, and Corporate. Maximum revenue comes from the Graphite Solutions segment, offering graphite products for industrial applications and industries like semiconductors, energy, chemicals, and automotive. Process Technology specializes in constructing and repairing plants and equipment for the chemicals sector. The Carbon Fibers segment provides carbon fibers and related semi-finished products for wind energy and automotive uses. Composite Solutions delivers customized composite material components, mainly for the automotive sector. Geographically, the company generates maximum revenue from Germany, followed by other markets.
63GF Score
Get the complete analysis for WBO:SGL
Piotroski F-Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
WBO:SGL has been successfully added to your 
