Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Constellium SECSTM -1.21%74 Debt-to-Equity is 1.76 as of Mar. 2026. GuruFocus rates CSTM with a GF Score™ of 74/100 and a GF Value™ of $20.41 (Significantly Overvalued). The stock has 1 warning sign investors should review. Among 1,218 Metals & Mining companies, Constellium SE ranks worse than 94.91% on this metric.
A high debt to equity ratio generally means that a company has been aggressive in financing its growth with debt. This can result in volatile earnings as a result of the additional interest expense.
The historical rank and industry rank for Constellium SE's Debt-to-Equity or its related term are showing as below:
CSTM'
s Debt-to-Equity Range Over the Past 10 Years
Min: -258.32 Med: -1.13 Max: 17.63
Current: 1.76
During the past 13 years, the highest Debt-to-Equity Ratio of Constellium SE was 17.63. The lowest was -258.32. And the median was -1.13.
CSTM's Debt-to-Equity is ranked worse than 94.91% of 1218
companies
in the Metals & Mining industry
Industry Median: 0.15
vs CSTM: 1.76
Constellium SE (NYSE:CSTM) Debt-to-Equity Explanation
Because a company can increase its ROE % by having more financial leverage, it is important to watch the leverage ratio when investing in high ROE % companies.
Constellium SE Debt-to-Equity Related Terms
Constellium SE Debt-to-Equity Historical Data
* Premium members only.
The historical data trend for Constellium SE's Debt-to-Equity 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, Constellium SE's Debt-to-Equity, along with its competitors' market caps and Debt-to-Equity 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 Debt-to-Equity vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Constellium SE's Debt-to-Equity distribution charts can be found below:
* The bar in red indicates where Constellium SE's Debt-to-Equity 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.
Constellium SE (CSTM) has a Debt-to-Equity of 1.76 as of Mar. 2026. Debt-to-Equity ratio represents the ratio of total debt to total company equity. View historical data on Constellium SE and its competitors. According to the industry distribution chart, Constellium SE ranks #1156 out of 1218 companies in the Metals & Mining industry, placing it in the top 94.9%.
Is Constellium SE's Debt-to-Equity too high?
Constellium SE's current Debt-to-Equity is 1.76. The Metals & Mining industry median Debt-to-Equity is 0.15. Constellium SE's value of 1.76 is 1073.3% above this industry median. Based on the distribution chart, Constellium SE ranks #1156 out of 1218 companies in the Metals & Mining industry, which is in the bottom quartile relative to peers. Overall, Constellium SE has a GF Score™ of 74/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Constellium SE's Debt-to-Equity compare to CENX and KALU?
According to the Metals & Mining industry distribution chart, Constellium SE ranks #1156 out of 1218 companies for Debt-to-Equity. This places Constellium SE in the lower half of its industry. The industry median Debt-to-Equity is 0.15. Constellium SE's value of 1.76 is 1073.3% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Debt-to-Equity for a Metals & Mining company?
The median Debt-to-Equity among Metals & Mining companies is 0.15, based on 1,218 companies in the industry. Companies in the top quartile (top 25%) have a Debt-to-Equity significantly above this median, while those in the bottom quartile fall well below. However, Debt-to-Equity should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Constellium SE's current Debt-to-Equity of 1.76 is 1073.3% 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 Debt-to-Equity mean?
A high Debt-to-Equity can signal that a stock is expensive relative to its fundamentals. Debt-to-Equity ratio represents the ratio of total debt to total company equity. View historical data on Constellium SE and its competitors. For the Metals & Mining industry, the median Debt-to-Equity is 0.15 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Constellium SE's current Debt-to-Equity is 1.76. 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 Significantly Overvalued. The stock's GF Value™ is $20.41, compared to a current price of $27.78 — trading 36.1% above its estimated fair value. The current Debt-to-Equity is 1.76 and 1073.3% above the Metals & Mining industry median of 0.15. Constellium SE's overall GF Score™ is 74/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Debt-to-Equity calculated?
Debt-to-Equity is calculated from a company's financial statements. For Constellium SE (CSTM), the current Debt-to-Equity is 1.76 as of Mar. 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 $27.78 is trading 36.1% above its estimated GF Value™ of $20.41.
GuruFocus considers Constellium SE to be Significantly Overvalued.
Key valuation signals for CSTM:
Debt-to-Equity: 1.76
GF Value™: $20.41 vs. price of $27.78 (36.1% above fair value)
Industry Position: 1073.3% above the Metals & Mining median (#1156 of 1218)
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.
74GF Score
Get the complete analysis for CSTM
Debt-to-Equity is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
CSTM has been successfully added to your 
