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Constellium SECSTM -3.66%77 Shiller PE Ratio is 19.54 as of Aug. 31, 2026, which is 80% below its 10-year median of 99.00. GuruFocus rates CSTM with a GF Score™ of 77/100 and a GF Value™ of $21.94 (Modestly Overvalued). The stock has 1 warning sign investors should review. Among 410 Metals & Mining companies, Constellium SE ranks better than 67.07% on this metric.
As of today (2026-08-31), Constellium SE's current share price is $25.9928. Constellium SE's E10 for the quarter that ended in Jun. 2026 was $1.33. Constellium SE's Shiller PE Ratio for today is 19.54.
The historical rank and industry rank for Constellium SE's Shiller PE Ratio or its related term are showing as below:
CSTM'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 19.01 Med: 99 Max: 448.6
Current: 19.54
During the past years, Constellium SE's highest Shiller PE Ratio was 448.60. The lowest was 19.01. And the median was 99.00.
CSTM's Shiller PE Ratio is ranked better than 67.07% of 410
companies
in the Metals & Mining industry
Industry Median: 32.045
vs CSTM: 19.54
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Constellium SE's adjusted earnings per share data for the three months ended in Jun. 2026 was $1.040. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $1.33 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Constellium SE (NYSE:CSTM) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Constellium SE Shiller PE Ratio Related Terms
Constellium SE Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Constellium SE's Shiller PE Ratio 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.
CSTM vs CENX, KALU, AA: Shiller PE Ratio Comparison
For the Aluminum subindustry, Constellium SE's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio 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.
Constellium SE Shiller PE Ratio vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Constellium SE's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Constellium SE's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
Constellium SE's Shiller PE Ratio for today is calculated as
* 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.
Constellium SE's E10 for the quarter that ended in Jun. 2026 is calculated as:
For example, Constellium SE's adjusted earnings per share data for the three months ended in Jun. 2026 was:
Add all the adjusted EPS together and divide 10 will get our E10.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
Constellium SE (CSTM) has a Shiller PE Ratio of 19.54 as of Aug. 31, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Constellium SE and its competitors. This is 80% below median its historical median of 99.00. Over the past decade, Constellium SE's Shiller PE Ratio has ranged from 19.01 to 448.60. According to the industry distribution chart, Constellium SE ranks #135 out of 410 companies in the Metals & Mining industry, placing it in the top 32.9%.
Is Constellium SE's Shiller PE Ratio too high?
Constellium SE's current Shiller PE Ratio of 19.54 is 80% below median its 10-year median of 99.00. Over the past 10 years, this metric has ranged from a low of 19.01 to a high of 448.60. The Metals & Mining industry median Shiller PE Ratio is 32.05. Constellium SE's value of 19.54 is 39% below this industry median. Based on the distribution chart, Constellium SE ranks #135 out of 410 companies in the Metals & Mining industry, which is above the industry midpoint. Overall, Constellium SE has a GF Score™ of 77/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Constellium SE's Shiller PE Ratio compare to CENX and KALU?
According to the Metals & Mining industry distribution chart, Constellium SE ranks #135 out of 410 companies for Shiller PE Ratio. This puts Constellium SE in the upper half of its industry. The industry median Shiller PE Ratio is 32.05. Constellium SE's value of 19.54 is 39% below this benchmark. Historically, Constellium SE's own Shiller PE Ratio has ranged from 19.01 to 448.60 over the past decade. While the company's 10-year median is 99.00 vs. the industry median of 32.05, Constellium SE has consistently been below 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 Shiller PE Ratio for a Metals & Mining company?
The median Shiller PE Ratio among Metals & Mining companies is 32.05, based on 410 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Constellium SE's current Shiller PE Ratio of 19.54 is 39% below 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 Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Constellium SE and its competitors. For the Metals & Mining industry, the median Shiller PE Ratio is 32.05 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Constellium SE's current Shiller PE Ratio is 19.54, which is 80% below median its own 10-year median of 99.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Constellium SE stock overvalued right now?
Based on GuruFocus' analysis, Constellium SE (CSTM) is currently considered Modestly Overvalued. The stock's GF Value™ is $21.94, compared to a current price of $25.99 — trading 18.5% above its estimated fair value. The current Shiller PE Ratio is 19.54, which is 80% below median its 10-year median of 99.00 and 39% below the Metals & Mining industry median of 32.05. Constellium SE's overall GF Score™ is 77/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Constellium SE (CSTM), the current Shiller PE Ratio is 19.54 as of Aug. 31, 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 Constellium SE (CSTM) Overvalued in 2026?
Based on GuruFocus' analysis, Constellium SE stock appears to be overvalued.
The current stock price of $25.99 is trading 18.5% above its estimated GF Value™ of $21.94.
GuruFocus considers Constellium SE to be Modestly Overvalued.
Key valuation signals for CSTM:
Shiller PE Ratio: 19.54 (80% below median its 10-year median of 99.00)
GF Value™: $21.94 vs. price of $25.99 (18.5% above fair value)
Industry Position: 39% below the Metals & Mining median (#135 of 410)
No single metric tells the full story. See the CSTM stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Constellium SE is engaged in the development, manufacture and sale of a broad range of high value-added specialty rolled and extruded aluminum products to the aerospace, space, defense, packaging, automotive, commercial transportation and general industrial end-markets. Its business model is to add value by converting aluminum into semi-fabricated and, in some instances, fully-fabricated alloyed aluminum products that meet stringent and performance-critical requirements from customers. It operates through three segments: Aerospace & Transportation Operating Segment, Packaging & Automotive Rolled Products Operating Segment, and Automotive Structures & Industry Operating Segment. It serves Aerospace, Packaging and Automotive and operates in the United States, France, Germany and others.
77GF Score
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