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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
State of Wyoming39,241$583.9K0.07%+2,097+5.6%Added
Police & Firemen's Retirement System of New Jersey39,426$586.7K0.00%+8,512+27.5%Added
Wealth Enhancement Advisory Services, LLC38,387$590.4K0.00%+17,223+81.4%Added
Walleye Capital LLC42,853$637.7K0.01%+40,753+1,940.6%Added
Occudo Quantitative Strategies LP43,891$653.1K0.08%+43,891New
New York State Common Retirement Fund45,787$681.3K0.00%+7,000+18.0%Added
Allspring Global Investments Holdings, LLC47,846$720.6K0.00%−472−1.0%Reduced
Bailard, Inc.49,100$730.6K0.02%+1,900+4.0%Added
Renaissance Group LLC51,856$771.6K0.03%−39,087−43.0%Reduced
Intech Investment Management LLC55,443$825.0K0.01%−13,228−19.3%Reduced
HSBC Holdings PLC57,272$846.5K0.00%−36,380−38.8%Reduced
Quantinno Capital Management LP57,125$850.0K0.00%+12,797+28.9%Added
Cerity Partners LLC58,493$870.4K0.00%+32,980+129.3%Added
STRS Ohio59,400$883.9K0.00%−2,000−3.3%Reduced
Royal Bank of Canada60,271$896.0K0.00%−4,382−6.8%Reduced
Envestnet Asset Management Inc61,097$909.1K0.00%+4,007+7.0%Added
Advisor Group Holdings, Inc.63,922$926.3K0.00%+63,683+26,645.6%Added
Lawson Kroeker Investment Management Inc63,020$937.7K0.17%−10,850−14.7%Reduced
ExodusPoint Capital Management, LP64,160$954.7K0.01%+15,134+30.9%Added
Mirae Asset Global ETFs Holdings Ltd.67,480$1.00M0.00%−10,547−13.5%Reduced
New Century Financial Group, LLC68,442$1.02M1.81%+68,442New
CWM, LLC73,313$1.09M0.00%+42,297+136.4%Added
Martingale Asset Management L P76,958$1.15M0.03%+76,958New
MetLife Investment Management81,980$1.22M0.01%−3,194−3.7%Reduced
Ameriprise Financial Inc86,406$1.29M0.00%−15,688−15.4%Reduced
Los Angeles Capital Management LLC86,881$1.29M0.00%+62,891+262.2%Added
CenterBook Partners LP88,854$1.32M0.07%−4,719−5.0%Reduced
Private Advisor Group, LLC88,906$1.32M0.01%−22,798−20.4%Reduced
Raymond James Financial Inc95,002$1.41M0.00%−1,955−2.0%Reduced
HighTower Advisors, LLC96,421$1.43M0.00%+6,316+7.0%Added
CI Private Wealth, LLC99,705$1.48M0.00%+470.0%Added
Connor, Clark & Lunn Investment Management Ltd.101,105$1.50M0.00%−129,707−56.2%Reduced
SEI Investments Co102,658$1.53M0.00%−5,574−5.2%Reduced
Manufacturers Life Insurance Company, The103,135$1.53M0.00%−28,132−21.4%Reduced
Citigroup Inc106,528$1.59M0.00%+48,069+82.2%Added
Gsa Capital Partners LLP110,230$1.64M0.14%+65,532+146.6%Added
Wells Fargo & Company110,449$1.64M0.00%+23,104+26.5%Added
Standard Life Aberdeen plc112,533$1.69M0.00%−45,200−28.7%Reduced
State of Wisconsin Investment Board115,020$1.71M0.00%−54,514−32.2%Reduced
Marshall Wace, LLP116,010$1.73M0.00%−290,868−71.5%Reduced
Deutsche Bank AG118,417$1.76M0.00%+20,975+21.5%Added
Federated Hermes, Inc.119,621$1.78M0.00%+372+0.3%Added
Clearbridge Investments, LLC120,585$1.79M0.00%+2,206+1.9%Added
California State Teachers Retirement System121,649$1.81M0.00%+9,937+8.9%Added
Mitsubishi UFJ Trust & Banking Corp121,720$1.81M0.00%+57,337+89.1%Added
Mackenzie Financial Corp132,130$1.97M0.00%+116,359+737.8%Added
Knights of Columbus Asset Advisors LLC132,303$1.97M0.11%+132,303New
Qube Research & Technologies Ltd135,731$2.02M0.00%−73,588−35.2%Reduced
Citadel Advisors LLC140,587$2.09M0.00%−33,885−19.4%Reduced
State of Alaska, Department of Revenue140,705$2.09M0.02%+5,705+4.2%Added
Invesco Ltd.141,712$2.11M0.00%+5,457+4.0%Added
HRT Financial LP152,996$2.28M0.01%−121,276−44.2%Reduced
Legal & General Group Plc156,335$2.33M0.00%+24,247+18.4%Added
Lighthouse Investment Partners, LLC156,878$2.33M0.08%+24,629+18.6%Added
Alliancebernstein L.P.157,750$2.35M0.00%+1,500+1.0%Added
GW&K Investment Management, LLC160,030$2.38M0.02%+160,030New
Y-Intercept (Hong Kong) Ltd163,261$2.43M0.06%+57,909+55.0%Added
Healthcare of Ontario Pension Plan Trust Fund164,300$2.44M0.00%+164,300New
Creative Planning166,502$2.48M0.00%+34,172+25.8%Added
BNP Paribas Arbitrage, SA172,177$2.56M0.00%+68,832+66.6%Added
Ieq Capital, LLC174,587$2.60M0.01%+106,107+154.9%Added
Schonfeld Strategic Advisors LLC176,821$2.63M0.02%+152,181+617.6%Added
Susquehanna International Group, LLP179,534$2.67M0.00%−18,626−9.4%Reduced
Eisler Capital Management Ltd.181,256$2.69M0.06%+146,145+416.2%Added
LSV Asset Management186,800$2.78M0.01%00.0%Unchanged
Sequoia Financial Advisors, LLC193,279$2.88M0.02%+193,279New
Rhumbline Advisers210,467$3.13M0.00%−3,838−1.8%Reduced
Rockingstone Advisors LLC214,762$3.20M1.58%+1,285+0.6%Added
Ionic Capital Management LLC218,566$3.25M3.62%00.0%Unchanged
Franklin Resources Inc221,399$3.29M0.00%+25,793+13.2%Added
Acadian Asset Management LLC223,555$3.32M0.01%+201,870+930.9%Added
Cohen & Steers, Inc.224,743$3.34M0.01%−1,292−0.6%Reduced
Verition Fund Management LLC226,340$3.37M0.02%−85,217−27.4%Reduced
Bank of Montreal231,915$3.45M0.00%+22,385+10.7%Added
Jump Financial, LLC237,430$3.53M0.04%+89,917+61.0%Added
Swiss National Bank249,400$3.71M0.00%+3,700+1.5%Added
Jane Street Group, LLC251,758$3.75M0.00%+6,933+2.8%Added
Barclays PLC275,266$4.10M0.00%−51,152−15.7%Reduced
Massachusetts Financial Services Co284,975$4.24M0.00%+69,013+32.0%Added
Hudson Bay Capital Management LP307,487$4.58M0.03%−201,809−39.6%Reduced
Beacon Investment Advisors LLC340,623$5.07M2.07%+1,352+0.4%Added
Wellington Management Group LLP357,549$5.32M0.00%+29,209+8.9%Added
Bank of New York Mellon Corp384,128$5.72M0.00%+9,260+2.5%Added
Man Group plc387,373$5.76M0.01%−10,535−2.6%Reduced
Voleon Capital Management LP446,347$6.64M0.16%+351,503+370.6%Added
ArrowMark Colorado Holdings LLC451,913$6.72M0.12%−127,000−21.9%Reduced
Hotchkis & Wiley Capital Management LLC453,580$6.75M0.02%+69,210+18.0%Added
Russell Investments Group, Ltd.459,907$6.84M0.01%−41,171−8.2%Reduced
Trexquant Investment LP486,332$7.24M0.07%−234,815−32.6%Reduced
Bank of America Corp488,937$7.28M0.00%+91,003+22.9%Added
Cubist Systematic Strategies, LLC501,775$7.47M0.11%−212,364−29.7%Reduced
SummitTX Capital, L.P.560,909$8.35M0.35%+25,483+4.8%Added
Algert Global LLC595,676$8.86M0.15%+249,020+71.8%Added
Price T Rowe Associates Inc599,953$8.93M0.00%+8,647+1.5%Added
Panagora Asset Management Inc604,898$9.00M0.04%+172,529+39.9%Added
Boston Partners625,110$9.30M0.01%+340,357+119.5%Added
UBS Asset Management Americas Inc629,286$9.36M0.00%+147,861+30.7%Added
UBS Group AG634,220$9.44M0.00%−92,593−12.7%Reduced
Moore Capital Management, LP642,742$9.56M0.19%−178,004−21.7%Reduced
Empowered Funds, LLC645,991$9.61M0.10%+35,950+5.9%Added