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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, Q4 2025

Institutional positions in Constellium SE as of Dec 31, 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
253
+21 vs. Q3 2025
Shares held
124.3M
−3.47M (−2.7%) vs. Q3 2025
Total value
$2.34B
+$441.8M (+23.2%) vs. Q3 2025
New holders
42
86 more added
Sold out
21
94 more reduced

5 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2025: 253 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 heldQ4 2025: $2.34B
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, Q4 2025

Shares, value and share of portfolio for each institution holding Constellium SE; share changes are against Q3 2025.

Institutions holding CSTM in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Huntington National Bank1$140.00%00.0%Unchanged
Sofos Investments, Inc.1$190.00%00.0%Unchanged
Massmutual Trust Co FSB15$2830.00%00.0%Unchanged
SWAN Capital LLC25$4710.00%00.0%Unchanged
Bell Investment Advisors, Inc27$5090.00%+27New
Sunbelt Securities, Inc.29$5470.00%00.0%Unchanged
Larson Financial Group LLC30$5660.00%00.0%Unchanged
Global Retirement Partners, LLC36$6790.00%+36New
Cornerstone Planning Group LLC32$7380.00%00.0%Unchanged
Parkside Financial Bank & Trust45$8490.00%00.0%Unchanged
Assetmark, Inc47$8860.00%00.0%Unchanged
Clearstead Advisors, LLC60$1.13K0.00%−964−94.1%Reduced
SJS Investment Consulting Inc.79$1.49K0.00%+79New
The PNC Financial Services Group, Inc.80$1.51K0.00%−3−3.6%Reduced
Kilter Group LLC93$1.75K0.00%+75+416.7%Added
J.Safra Asset Management Corp136$2.56K0.00%00.0%Unchanged
MAI Capital Management152$2.87K0.00%+73+92.4%Added
Atlantic Union Bankshares Corp200$3.77K0.00%00.0%Unchanged
Tompkins Financial Corp200$3.77K0.00%00.0%Unchanged
CIBC Private Wealth Group, LLC250$4.71K0.00%00.0%Unchanged
Ronald Blue Trust, Inc.250$4.71K0.00%+250New
Harvest Fund Management Co., Ltd410$8.00K0.00%00.0%Unchanged
Optiver Holding B.V.502$9.46K0.00%−324−39.2%Reduced
Rockefeller Capital Management L.P.519$9.78K0.00%+468+917.6%Added
Pacifica Partners Inc.500$9.88K0.00%00.0%Unchanged
WealthCollab, LLC560$10.6K0.00%00.0%Unchanged
Parallel Advisors, LLC611$11.5K0.00%+34+5.9%Added
US Bancorp731$13.8K0.00%−28−3.7%Reduced
Eastern Bank740$13.9K0.00%+740New
IFP Advisors, Inc809$15.3K0.00%+701+649.1%Added
Smartleaf Asset Management LLC824$15.6K0.00%+488+145.2%Added
Rothschild Investment LLC834$15.7K0.00%+340+68.8%Added
Harbor Capital Advisors, Inc.868$16.0K0.00%−15−1.7%Reduced
Barrow Hanley Mewhinney & Strauss LLC957$18.0K0.00%−85−8.2%Reduced
True Wealth Design, LLC961$18.1K0.01%+163+20.4%Added
TD Waterhouse Canada Inc.1,000$18.9K0.00%+1,000New
Aster Capital Management (DIFC) Ltd1,032$19.5K0.01%+1,032New
Matrix Trust Co1,127$21.0K0.00%+1,127New
USA Financial Portformulas Corp1,156$21.8K0.00%+1,156New
Farther Finance Advisors, LLC1,488$28.0K0.00%+1,467+6,985.7%Added
Nisa Investment Advisors, LLC1,773$33.4K0.00%−337−16.0%Reduced
Quarry LP1,871$35.3K0.01%−3,739−66.6%Reduced
Allworth Financial LP2,074$39.1K0.00%+714+52.5%Added
Geneos Wealth Management Inc.3,000$56.5K0.00%00.0%Unchanged
GAMMA Investing LLC3,089$58.2K0.00%+707+29.7%Added
EverSource Wealth Advisors, LLC3,151$59.4K0.00%+803+34.2%Added
Signaturefd, LLC3,400$64.1K0.00%−55−1.6%Reduced
Essential Partners LLC3,489$65.8K0.02%+1,199+52.4%Added
Nomura Asset Management Co Ltd3,600$67.9K0.00%00.0%Unchanged
Quadrant Capital Group LLC3,677$69.3K0.00%00.0%Unchanged
KBC Group NV4,238$80.0K0.00%00.0%Unchanged
Amalgamated Bank4,313$81.0K0.00%−229−5.0%Reduced
Versant Capital Management, Inc5,138$96.9K0.01%00.0%Unchanged
Sterling Capital Management LLC5,343$100.7K0.00%−1,006−15.8%Reduced
Public Employees Retirement System of Ohio6,254$117.9K0.00%−330−5.0%Reduced
Group One Trading, L.P.7,581$142.9K0.00%+5,608+284.2%Added
Tower Research Capital LLC (TRC)7,938$149.6K0.00%−3,034−27.7%Reduced
EMC Capital Management8,629$163.0K0.07%−1,523−15.0%Reduced
Baader Bank INC10,000$188.5K0.02%+10,000New
Rossby Financial, LCC10,000$188.5K0.06%+10,000New
Fisher Asset Management, LLC10,173$191.8K0.00%+10,173New
LPL Financial LLC10,219$192.6K0.00%+10,219New
Moran Wealth Management, LLC10,333$194.8K0.01%+10,333New
Rathbone Brothers plc10,675$201.2K0.00%+10,675New
Vise Technologies, Inc.10,737$202.4K0.00%+10,737New
Xponance, Inc.10,871$204.9K0.00%−349−3.1%Reduced
Krilogy Financial LLC9,253$209.0K0.01%+9,253New
Ameritas Investment Partners, Inc.11,143$210.0K0.01%−751−6.3%Reduced
Centiva Capital, LP11,153$210.2K0.01%+11,153New
Buckingham Strategic Partners11,401$214.9K0.00%+11,401New
Callan Family Office, LLC11,628$219.2K0.00%+11,628New
Belpointe Asset Management LLC11,920$224.7K0.01%00.0%Unchanged
Mangrove Partners12,084$227.8K0.02%+12,084New
Fiduciary Trust Co13,463$253.8K0.00%+13,463New
Merit Financial Group, LLC13,463$253.8K0.00%+13,463New
Oxford Asset Management LLP14,224$268.1K0.09%+14,224New
Teacher Retirement System of Texas14,409$271.6K0.00%−18,258−55.9%Reduced
FourThought Financial Partners, LLC14,417$271.8K0.02%+82+0.6%Added
Colony Group, LLC14,777$278.5K0.00%+4,503+43.8%Added
Polymer Capital Management (US) LLC15,200$286.5K0.04%−9,216−37.7%Reduced
nVerses Capital, LLC15,298$288.4K0.65%+15,298New
Aristides Capital LLC15,659$295.2K0.10%−3,060−16.3%Reduced
Advisors Asset Management, Inc.15,661$295.2K0.00%−11,123−41.5%Reduced
Skopos Labs, Inc.16,543$312.8K0.01%+16,543New
EP Wealth Advisors, LLC17,026$320.9K0.00%+17,026New
Contravisory Investment Management, Inc.17,671$333.1K0.07%−711−3.9%Reduced
Pictet Asset Management Holding SA17,900$337.4K0.00%00.0%Unchanged
Captrust Financial Advisors17,935$338.1K0.00%+3,554+24.7%Added
Jain Global LLC18,089$341.0K0.00%+7,270+67.2%Added
Dynamic Technology Lab Private Ltd18,797$354.0K0.08%−17,610−48.4%Reduced
Cambridge Investment Research Advisors, Inc.18,820$355.0K0.00%+18,820New
Highland Capital Management, LLC19,482$367.2K0.02%+19,482New
Mirabella Financial Services LLP20,790$391.9K0.04%+20,790New
Gsa Capital Partners LLP24,403$460.0K0.04%−85,827−77.9%Reduced
PharVision Advisers, LLC24,466$461.2K0.23%−9,427−27.8%Reduced
Voya Investment Management LLC24,735$466.3K0.00%−1,071−4.2%Reduced
Virtus ETF Advisers LLC26,000$490.1K0.23%00.0%Unchanged
Metis Global Partners, LLC26,504$499.6K0.01%00.0%Unchanged
KLP Kapitalforvaltning AS26,600$501.4K0.00%00.0%Unchanged
O'Shaughnessy Asset Management, LLC27,930$526.5K0.00%−9,769−25.9%Reduced