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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 $3.86B in total; no superinvestor holds it.

13F holders, Q2 2025

Institutional positions in Constellium SE as of Jun 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
224
+7 vs. Q1 2025
Shares held
132.5M
+528.1K (+0.4%) vs. Q1 2025
Total value
$1.76B
+$430.1M (+32.3%) vs. Q1 2025
New holders
47
90 more added
Sold out
40
70 more reduced

3 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2025: 224 institutions
Q1 2021: 135 institutionsQ2 2021: 152 institutionsQ3 2021: 162 institutionsQ4 2021: 161 institutionsQ1 2022: 183 institutionsQ2 2022: 189 institutionsQ3 2022: 179 institutionsQ4 2022: 185 institutionsQ1 2023: 182 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 heldQ2 2025: $1.76B
Q1 2021: $1.80BQ2 2021: $2.46BQ3 2021: $2.39BQ4 2021: $2.27BQ1 2022: $2.36BQ2 2022: $1.76BQ3 2022: $1.45BQ4 2022: $1.54BQ1 2023: $2.19BQ2 2023: $2.30BQ3 2023: $2.42BQ4 2023: $2.71BQ1 2024: $3.13BQ2 2024: $2.60BQ3 2024: $2.22BQ4 2024: $1.39BQ1 2025: $1.33BQ2 2025: $1.76BQ3 2025: $1.95BQ4 2025: $2.38BQ1 2026: $3.08BQ2 2026: $3.86B
Institutions holding CSTM and their total value by quarter
QuarterHoldersValue
Q2 2026389$3.86B
Q1 2026315$3.08B
Q4 2025253$2.38B
Q3 2025237$1.95B
Q2 2025224$1.76B
Q1 2025220$1.33B
Q4 2024219$1.39B
Q3 2024222$2.22B
Q2 2024224$2.60B
Q1 2024207$3.13B
Q4 2023193$2.71B
Q3 2023191$2.42B
Q2 2023187$2.30B
Q1 2023182$2.19B
Q4 2022185$1.54B
Q3 2022179$1.45B
Q2 2022189$1.76B
Q1 2022183$2.36B
Q4 2021161$2.27B
Q3 2021162$2.39B
Q2 2021152$2.46B
Q1 2021135$1.80B

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Constellium SE; share changes are against Q1 2025.

Institutions holding CSTM in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
T. Rowe Price Investment Management, Inc.14,309,721$190.3M0.12%−4,889,594−25.5%Reduced
BlackRock, Inc.13,856,730$184.3M0.00%+3,218,490+30.3%Added
FMR LLC13,813,156$183.7M0.01%−539,138−3.8%Reduced
Bpifrance SA12,593,903$167.5M8.02%00.0%Unchanged
Nut Tree Capital Management, LP5,655,900$75.2M22.14%00.0%Unchanged
Encompass Capital Advisors LLC5,362,760$71.3M2.88%+2,005,216+59.7%Added
Millennium Management LLC5,122,366$68.1M0.06%+1,006,927+24.5%Added
State Street Corp2,502,662$33.3M0.00%+282,289+12.7%Added
Vanguard Group Inc2,360,909$31.4M0.00%+556,250+30.8%Added
Janus Henderson Group PLC2,291,227$30.5M0.01%+46,800+2.1%Added
D. E. Shaw & Co., Inc.2,278,662$30.3M0.03%−682,535−23.0%Reduced
Macquarie Group Ltd2,203,947$29.3M0.04%−5250.0%Reduced
JPMorgan Chase & Co2,171,333$28.9M0.00%+1,265,401+139.7%Added
Nuveen, LLC2,140,835$28.5M0.01%+195,381+10.0%Added
Soapstone Management L.P.1,776,559$23.6M15.68%+199,360+12.6%Added
Geode Capital Management, LLC1,730,112$23.0M0.00%+214,987+14.2%Added
Cooper Creek Partners Management LLC1,666,521$22.2M0.74%+1,182,966+244.6%Added
Morgan Stanley1,601,217$21.3M0.00%+347,149+27.7%Added
Spears Abacus Advisors LLC1,480,132$19.7M0.40%+1,354,250+1,075.8%Added
Capstone Investment Advisors, LLC1,413,555$18.8M0.16%+485,519+52.3%Added
Kailix Advisors LLC1,232,319$16.4M25.38%−501,000−28.9%Reduced
Goldman Sachs Group Inc1,170,521$15.6M0.00%−314,205−21.2%Reduced
Scopus Asset Management, L.P.1,056,708$14.1M0.38%+1,056,708New
Northern Trust Corp1,024,560$13.6M0.00%+116,921+12.9%Added
Brightline Capital Management, LLC1,000,000$13.3M5.73%+255,000+34.2%Added
Beaconlight Capital, LLC928,535$12.3M7.23%−34,844−3.6%Reduced
Arrowstreet Capital, Limited Partnership920,965$12.2M0.01%+580,378+170.4%Added
Bridgeway Capital Management, LLC882,541$11.7M0.28%+32,035+3.8%Added
Voloridge Investment Management, LLC871,780$11.6M0.04%−396,164−31.2%Reduced
Mountaineer Partners Management, LLC845,682$11.2M7.43%+303,614+56.0%Added
Whitebox Advisors LLC842,989$11.2M0.31%+80,491+10.6%Added
Moore Capital Management, LP820,746$10.9M0.22%+11,069+1.4%Added
Charles Schwab Investment Management Inc808,554$10.8M0.00%+71,676+9.7%Added
American Century Companies Inc743,601$9.89M0.01%+519,869+232.4%Added
UBS Group AG726,813$9.67M0.00%+79,123+12.2%Added
Trexquant Investment LP721,147$9.59M0.11%+721,147New
Thrivent Financial for Lutherans714,779$9.51M0.02%−949,140−57.0%Reduced
Cubist Systematic Strategies, LLC714,139$9.50M0.10%+714,139New
Point72 Asset Management, L.P.623,687$8.30M0.02%+129,851+26.3%Added
Empowered Funds, LLC610,041$8.11M0.09%+32,035+5.5%Added
Price T Rowe Associates Inc591,306$7.87M0.00%−10,119−1.7%Reduced
Tudor Investment Corp Et Al590,459$7.85M0.06%+464,490+368.7%Added
ArrowMark Colorado Holdings LLC578,913$7.70M0.14%00.0%Unchanged
SummitTX Capital, L.P.535,426$7.12M0.31%+203,616+61.4%Added
Hudson Bay Capital Management LP509,296$6.77M0.04%+265,780+109.1%Added
Russell Investments Group, Ltd.501,078$6.66M0.01%−2,942−0.6%Reduced
UBS Asset Management Americas Inc481,425$6.40M0.00%+481,425New
SG Americas Securities, LLC450,876$6.00M0.03%+26,227+6.2%Added
Panagora Asset Management Inc432,369$5.75M0.03%−251−0.1%Reduced
Marshall Wace, LLP406,878$5.41M0.01%+158,951+64.1%Added
Bank of America Corp397,934$5.29M0.00%+36,655+10.1%Added
Man Group plc397,908$5.29M0.01%−803,374−66.9%Reduced
Hotchkis & Wiley Capital Management LLC384,370$5.11M0.02%−8,220−2.1%Reduced
AQR Capital Management LLC383,084$5.10M0.00%+291,518+318.4%Added
Bank of New York Mellon Corp374,868$4.99M0.00%+37,485+11.1%Added
Algert Global LLC346,656$4.61M0.10%+110,759+47.0%Added
Beacon Investment Advisors LLC339,271$4.53M1.95%+2,362+0.7%Added
Wellington Management Group LLP328,340$4.37M0.00%−11,087−3.3%Reduced
Barclays PLC326,418$4.34M0.00%+137,734+73.0%Added
Verition Fund Management LLC311,557$4.14M0.02%+71,383+29.7%Added
Boston Partners284,753$3.79M0.00%+149,317+110.2%Added
HRT Financial LP274,272$3.65M0.02%−255,714−48.2%Reduced
Swiss National Bank245,700$3.27M0.00%+245,700New
Jane Street Group, LLC244,825$3.26M0.01%−98,861−28.8%Reduced
Connor, Clark & Lunn Investment Management Ltd.230,812$3.07M0.01%−12,067−5.0%Reduced
Cohen & Steers, Inc.226,035$3.01M0.01%+226,035New
Ionic Capital Management LLC218,566$2.91M3.26%00.0%Unchanged
Massachusetts Financial Services Co215,962$2.87M0.00%+47,954+28.5%Added
Rhumbline Advisers214,305$2.85M0.00%+27,646+14.8%Added
Rockingstone Advisors LLC213,477$2.84M1.49%−66,085−23.6%Reduced
Bank of Montreal209,530$2.79M0.00%−2,108−1.0%Reduced
Qube Research & Technologies Ltd209,319$2.78M0.00%−725,891−77.6%Reduced
Susquehanna International Group, LLP198,160$2.64M0.00%−136,877−40.9%Reduced
Franklin Resources Inc195,606$2.60M0.00%+340+0.2%Added
LSV Asset Management186,800$2.48M0.01%00.0%Unchanged
Engineers Gate Manager LP176,904$2.35M0.03%+86,883+96.5%Added
Citadel Advisors LLC174,472$2.32M0.00%−100,524−36.6%Reduced
State of Wisconsin Investment Board169,534$2.25M0.01%+36,153+27.1%Added
Concentric Capital Strategies, LP168,770$2.24M0.13%+89,211+112.1%Added
Standard Life Aberdeen plc157,733$2.10M0.00%−27,116−14.7%Reduced
Alliancebernstein L.P.156,250$2.08M0.00%+21,400+15.9%Added
Nebula Research & Development LLC153,440$2.04M0.17%−8,627−5.3%Reduced
TD Asset Management Inc152,552$2.03M0.00%−149,994−49.6%Reduced
Voya Investment Management LLC149,701$1.99M0.00%−36,516−19.6%Reduced
Jump Financial, LLC147,513$1.96M0.02%+8,163+5.9%Added
Invesco Ltd.136,255$1.81M0.00%−895−0.7%Reduced
State of Alaska, Department of Revenue135,000$1.79M0.02%00.0%Unchanged
Creative Planning132,330$1.76M0.00%−74,967−36.2%Reduced
Lighthouse Investment Partners, LLC132,249$1.76M0.08%+62,249+88.9%Added
Legal & General Group Plc132,088$1.76M0.00%+97,426+281.1%Added
Manufacturers Life Insurance Company, The131,267$1.75M0.00%−108−0.1%Reduced
Wolverine Trading, LLC126,727$1.69M0.04%+43,287+51.9%Added
Federated Hermes, Inc.119,249$1.59M0.00%+119,249New
Clearbridge Investments, LLC118,379$1.57M0.00%+3,416+3.0%Added
Norges Bank112,716$1.50M0.00%−104,403−48.1%Reduced
California State Teachers Retirement System111,712$1.49M0.00%+102,260+1,081.9%Added
Private Advisor Group, LLC111,704$1.49M0.01%+12,019+12.1%Added
SEI Investments Co108,232$1.44M0.00%−641,453−85.6%Reduced
Renaissance Technologies LLC106,100$1.41M0.00%−71,278−40.2%Reduced
Y-Intercept (Hong Kong) Ltd105,352$1.40M0.03%+105,352New