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Constellium SE

CSTM
Exchange
NYSE
Industry
Secondary Smelting & Refining of Nonferrous Metals
SEC CIK
0001563411

In the last 90 days, Constellium SE insiders filed 1 open-market purchase and 0 sales; 389 institutions reported holding it in 13F filings for Q2 2026, worth $3.85B in total; no superinvestor holds it.

13F holders, Q3 2025

Institutional positions in Constellium SE as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
237
+16 vs. Q2 2025
Shares held
128.5M
−3.83M (−2.9%) vs. Q2 2025
Total value
$1.91B
+$152.0M (+8.6%) vs. Q2 2025
New holders
38
104 more added
Sold out
22
66 more reduced

3 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CSTM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ3 2025: 237 institutions
Q1 2021: 135 institutionsQ2 2021: 153 institutionsQ3 2021: 162 institutionsQ4 2021: 161 institutionsQ1 2022: 183 institutionsQ2 2022: 189 institutionsQ3 2022: 179 institutionsQ4 2022: 185 institutionsQ1 2023: 183 institutionsQ2 2023: 187 institutionsQ3 2023: 191 institutionsQ4 2023: 193 institutionsQ1 2024: 207 institutionsQ2 2024: 224 institutionsQ3 2024: 222 institutionsQ4 2024: 219 institutionsQ1 2025: 220 institutionsQ2 2025: 224 institutionsQ3 2025: 237 institutionsQ4 2025: 253 institutionsQ1 2026: 315 institutionsQ2 2026: 389 institutions
Value heldQ3 2025: $1.91B
Q1 2021: $1.80BQ2 2021: $2.46BQ3 2021: $2.39BQ4 2021: $2.27BQ1 2022: $2.36BQ2 2022: $1.76BQ3 2022: $1.35BQ4 2022: $1.57BQ1 2023: $2.04BQ2 2023: $2.34BQ3 2023: $2.46BQ4 2023: $2.67BQ1 2024: $3.04BQ2 2024: $2.58BQ3 2024: $2.21BQ4 2024: $1.39BQ1 2025: $1.33BQ2 2025: $1.76BQ3 2025: $1.91BQ4 2025: $2.34BQ1 2026: $3.08BQ2 2026: $3.85B
Institutions holding CSTM and their total value by quarter
QuarterHoldersValue
Q2 2026389$3.85B
Q1 2026315$3.08B
Q4 2025253$2.34B
Q3 2025237$1.91B
Q2 2025224$1.76B
Q1 2025220$1.33B
Q4 2024219$1.39B
Q3 2024222$2.21B
Q2 2024224$2.58B
Q1 2024207$3.04B
Q4 2023193$2.67B
Q3 2023191$2.46B
Q2 2023187$2.34B
Q1 2023183$2.04B
Q4 2022185$1.57B
Q3 2022179$1.35B
Q2 2022189$1.76B
Q1 2022183$2.36B
Q4 2021161$2.27B
Q3 2021162$2.39B
Q2 2021153$2.46B
Q1 2021135$1.80B

Institutions, Q3 2025

Shares, value and share of portfolio for each institution holding Constellium SE; share changes are against Q2 2025.

Institutions holding CSTM in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Barrow Hanley Mewhinney & Strauss LLC1,042$15.5K0.00%−37−3.4%Reduced
Clearstead Advisors, LLC1,024$15.2K0.00%+486+90.3%Added
Harbor Capital Advisors, Inc.883$13.0K0.00%−809−47.8%Reduced
Optiver Holding B.V.826$12.3K0.00%+826New
True Wealth Design, LLC798$11.9K0.00%+297+59.3%Added
US Bancorp759$11.3K0.00%+28+3.8%Added
Point72 (DIFC) Ltd648$9.64K0.00%+648New
Parallel Advisors, LLC577$8.59K0.00%+30+5.5%Added
WealthCollab, LLC560$8.33K0.00%00.0%Unchanged
Groupe la Francaise545$8.20K0.00%+545New
Pacifica Partners Inc.500$7.53K0.00%00.0%Unchanged
Rothschild Investment LLC494$7.35K0.00%+249+101.6%Added
Harvest Fund Management Co., Ltd410$6.00K0.00%+303+283.2%Added
Smartleaf Asset Management LLC336$5.05K0.00%+128+61.5%Added
CIBC Private Wealth Group, LLC250$3.72K0.00%00.0%Unchanged
Atlantic Union Bankshares Corp200$2.98K0.00%00.0%Unchanged
Tompkins Financial Corp200$2.98K0.00%00.0%Unchanged
J.Safra Asset Management Corp136$2.02K0.00%+136New
Spire Wealth Management118$1.76K0.00%+118New
IFP Advisors, Inc108$1.61K0.00%+44+68.8%Added
Principal Securities, Inc.85$1.26K0.00%00.0%Unchanged
The PNC Financial Services Group, Inc.83$1.24K0.00%+1+1.2%Added
MAI Capital Management79$1.18K0.00%−180−69.5%Reduced
Rockefeller Capital Management L.P.51$7590.00%+51New
Assetmark, Inc47$6990.00%00.0%Unchanged
Parkside Financial Bank & Trust45$6700.00%00.0%Unchanged
Cornerstone Planning Group LLC32$5180.00%+9+39.1%Added
Larson Financial Group LLC30$4460.00%00.0%Unchanged
Sunbelt Securities, Inc.29$4320.00%+29New
SWAN Capital LLC25$3720.00%+25New
Farther Finance Advisors, LLC21$3120.00%+20+2,000.0%Added
Kilter Group LLC18$2680.00%00.0%Unchanged
Massmutual Trust Co FSB15$2230.00%00.0%Unchanged
Advisory Services Network, LLC9$1340.00%+9New
Sofos Investments, Inc.1$150.00%+1New
Huntington National Bank1$140.00%00.0%Unchanged
FNY Investment Advisers, LLC14$00.00%+1+7.7%Added
Thrivent Financial for Lutherans0$00.00%−714,779−100.0%Sold out
Point72 Asset Management, L.P.0$00.00%−623,687−100.0%Sold out
Concentric Capital Strategies, LP0$00.00%−168,770−100.0%Sold out
Nebula Research & Development LLC0$00.00%−153,440−100.0%Sold out
TD Asset Management Inc0$00.00%−152,552−100.0%Sold out
Shay Capital LLC0$00.00%−85,000−100.0%Sold out
Centiva Capital, LP0$00.00%−66,391−100.0%Sold out
SummerHaven Investment Management, LLC0$00.00%−43,791−100.0%Sold out
LPL Financial LLC0$00.00%−20,919−100.0%Sold out
FIL Ltd0$00.00%−20,040−100.0%Sold out
Two Sigma Securities, LLC0$00.00%−20,019−100.0%Sold out
111 Capital0$00.00%−19,210−100.0%Sold out
Parallax Volatility Advisers, L.P.0$00.00%−17,069−100.0%Sold out
Quadrature Capital Ltd0$00.00%−15,964−100.0%Sold out
Inceptionr LLC0$00.00%−14,686−100.0%Sold out
Net Worth Advisory Group0$00.00%−13,949−100.0%Sold out
Magnetar Financial LLC0$00.00%−12,615−100.0%Sold out
Farringdon Capital, Ltd.0$00.00%−12,230−100.0%Sold out
Ballentine Partners, LLC0$00.00%−11,174−100.0%Sold out
Virtu Financial LLC0$00.00%−10,888−100.0%Sold out
Caitong International Asset Management Co., Ltd0$00.00%−97−100.0%Sold out
Skopos Labs, Inc.0$00.00%−6−100.0%Sold out
Norges Bank––––Not filed
CIBC World Markets Corp––––Not filed
Financial Gravity Companies, Inc.––––Not filed