Constellium (CSTM) - Shares outstanding

Number of shares outstanding as of December 2025 : 138,668,972

According to Constellium 's latest financial reports and stock price the company's current number of shares outstanding is 138,668,972. At the end of 2025 the company had 138,668,972 shares outstanding. The number of outstanding shares is usually impacted by stock plits and shares buy back.

Shares outstanding history for Constellium from 2012 to 2025

Shares Outstanding at the end of each year

Year	Shares Outstanding	Change
2025	0.13 B	-3.94%
2024	0.14 B	-1.67%
2023	0.14 B	1.74%
2022	0.14 B	1.85%
2021	0.14 B	1.22%
2020	0.13 B	1.72%
2019	0.13 B	1.68%
2018	0.13 B	9.27%
2017	0.12 B	17.65%
2016	0.10 B	-0.37%
2015	0.10 B	5.65%
2014	0.10 B	-3.9%
2013	0.10 B	1.25%
2012	0.10 B

Shares Outstanding for similar companies or competitors

Company	Shares Outstanding	differencediff.	Country
Alcoa AA	258,915,524	86.71%	🇺🇸 USA
Kaiser Aluminum KALU	16,192,000	-88.32%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Number of shares outstanding for Constellium (CSTM)

Number of shares outstanding as of December 2025 : 138,668,972