Constellium SECSTM
13F holders, Q1 2026 (March 31)313holders +62
80new positions
21sold out
7famous investors
$24.45avg. 13F price*
At the end of Q1 2026, 313 institutions reported holding Constellium SE (CSTM) in their 13F filings, up 62 from Q4 2025. 80 opened new positions and 21 sold out. The largest holders were BlackRock, Inc. ($318.7M), Bpifrance SA ($309.6M) and FMR LLC ($171.1M). 7 famous investors held it, including David E. Shaw (0.1% of D. E. Shaw & Co.'s portfolio), Israel Englander (0.1% of Millennium Management's portfolio) and Ray Dalio (0.1% of Bridgewater Associates's portfolio).
- Company
- Constellium SE
- CUSIP
- F21107101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 80 | $212.0M |
| Exits | 21 | $131.3M |
All 13F filers, Q4 2025 → Q1 2026: 25,902,283 shares bought and 24,266,971 shares sold, net +1,635,312 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 313 holders
| BlackRock, Inc. | 0.01% | Reduce -5.6% | 12,964,203 | $318.7M |
| Bpifrance SA | 18.71% | No change | 12,593,903 | $309.6M |
| FMR LLC | 0.01% | Reduce -34.1% | 6,961,768 | $171.1M |
| T. Rowe Price Investment Management, Inc. | 0.07% | Reduce -8.6% | 3,960,819 | $97.4M |
| Vanguard Portfolio Management LLC | 0.01% | — | 3,927,097 | $96.5M |
| Millennium Management | 0.07% | Reduce -44.6% | 3,470,091 | $85.3M |
| D. E. Shaw & Co. | 0.07% | Add +5.9% | 3,234,576 | $79.5M |
| Arrowstreet Capital, Limited Partnership | 0.04% | Add +620.9% | 3,228,027 | $79.3M |
| Morgan Stanley | 0.00% | Reduce -14.3% | 3,196,054 | $78.6M |
| Nuveen, LLC | 0.02% | Reduce -0.5% | 2,827,731 | $69.5M |
| State Street Corp. | 0.00% | Add +3.9% | 2,763,495 | $67.9M |
| Encompass Capital Advisors LLC | 2.48% | Reduce -46.8% | 2,477,278 | $60.9M |
| American Century Companies Inc. | 0.03% | Add +15.1% | 2,085,479 | $51.3M |
| AQR Capital Management | 0.02% | Add +17.5% | 2,074,861 | $51.0M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.08% | Add +894.5% | 2,056,336 | $50.5M |
| JPMorgan Chase & Co. | 0.00% | Reduce -1.8% | 2,051,930 | $47.3M |
| Nomura Asset Management International Inc. | 0.08% | Reduce -1.6% | 1,913,433 | $47.0M |
| Brightline Capital Management, LLC | 13.43% | Add +0.3% | 1,847,000 | $45.4M |
| Alliancebernstein L.P. | 0.01% | Add +1573.5% | 2,317,008 | $43.7M |
| Geode Capital Management, LLC | 0.00% | Add +2.3% | 1,668,451 | $41.0M |
| SG Americas Securities, LLC | 0.04% | Add +53.6% | 1,497,460 | $36.8M |
| Westwood Holdings Group Inc. | 0.25% | New | 1,401,416 | $34.4M |
| Goldman Sachs Group Inc. | 0.00% | Add +0.3% | 1,371,776 | $33.7M |
| Kinetic Partners Management, LP | 1.81% | New | 1,312,400 | $32.3M |
| Acadian Asset Management LLC | 0.04% | Add +252.0% | 1,272,871 | $31.3M |
| Beaconlight Capital, LLC | 16.24% | Reduce -12.6% | 1,171,812 | $28.8M |
| Point72 Asset Management | 0.05% | Add +216.0% | 1,005,203 | $24.7M |
| Northern Trust Corp. | 0.00% | Add +3.8% | 977,583 | $24.0M |
| William Blair Investment Management, LLC | 0.07% | New | 918,090 | $22.6M |
| Cannell & Spears LLC | 0.44% | Reduce -6.0% | 909,200 | $22.3M |
| Allianz Asset Management GmbH | 0.03% | Add +408.1% | 893,937 | $22.0M |
| Engineers Gate Manager LP | 0.27% | Reduce -15.7% | 884,103 | $21.7M |
| Bayberry Capital Partners LP | 7.10% | New | 874,000 | $21.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -1.6% | 855,664 | $21.0M |
| Bank of America Corp. | 0.00% | Add +100.1% | 851,222 | $20.9M |
| Penn Capital Management Company, LLC | 1.61% | Add +131.4% | 844,934 | $20.8M |
| Jane Street Group, LLC | 0.02% | Add +165.3% | 832,491 | $20.5M |
| Soapstone Management L.P. | 14.01% | Reduce -40.7% | 800,000 | $19.7M |
| Balyasny Asset Management L.P. | 0.04% | Add +262.6% | 795,413 | $19.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -3.2% | 783,237 | $19.3M |
| Citadel Advisors | 0.01% | Add +504.4% | 770,608 | $18.9M |
| Cooper Creek Partners Management LLC | 0.90% | Reduce -23.5% | 764,205 | $18.8M |
| Panagora Asset Management Inc. | 0.06% | Add +13.5% | 704,840 | $17.3M |
| Mountaineer Partners Management, LLC | 8.04% | Reduce -3.4% | 658,490 | $16.2M |
| Federated Hermes, Inc. | 0.03% | Add +119.7% | 652,658 | $16.0M |
| New York State Common Retirement Fund | 0.02% | Add +99.2% | 570,187 | $14.0M |
| Kailix Advisors LLC | 11.83% | Reduce -49.5% | 494,400 | $13.5M |
| Fisher Asset Management | 0.00% | Add +5202.8% | 539,451 | $13.3M |
| HRT Financial LP | 0.03% | Add +63.8% | 518,832 | $12.8M |
| Bridgewater Associates | 0.06% | New | 502,971 | $12.4M |
| ArrowMark Colorado Holdings LLC | 0.32% | Reduce -17.6% | 497,379 | $12.2M |
| Trexquant Investment LP | 0.09% | Add +24.9% | 483,077 | $11.9M |
| UBS Group AG | 0.00% | Reduce -15.0% | 471,495 | $11.6M |
| Qube Research & Technologies Ltd | 0.02% | New | 470,929 | $11.6M |
| Russell Investments Group, Ltd. | 0.01% | Add +8.4% | 465,397 | $11.4M |
| Janus Henderson Group PLC | 0.01% | Add +775.9% | 439,301 | $10.8M |
| Hudson Bay Capital Management LP | 0.07% | No change | 401,989 | $9.9M |
| Bank of New York Mellon Corp | 0.00% | Reduce -1.2% | 397,737 | $9.8M |
| Danske Bank A/S | 0.02% | Reduce -9.5% | 395,440 | $9.7M |
| Algert Global LLC | 0.13% | Reduce -21.3% | 358,938 | $8.8M |
| Whitebox Advisors LLC | 0.46% | Reduce -30.6% | 346,660 | $8.5M |
| Massachusetts Financial Services Co. | 0.00% | Add +8.4% | 337,844 | $8.3M |
| SummitTX Capital, L.P. | 0.26% | Reduce -52.0% | 330,242 | $8.1M |
| Raymond James Financial Inc. | 0.00% | Add +244.6% | 328,788 | $8.1M |
| Beacon Investment Advisors LLC | 3.03% | Reduce -0.3% | 326,966 | $8.0M |
| Hillsdale Investment Management Inc. | 0.21% | New | 316,700 | $7.8M |
| Franklin Resources Inc. | 0.00% | Add +35.7% | 289,324 | $7.1M |
| Two Sigma Investments, LP | 0.01% | New | 288,900 | $7.1M |
| CVFG LLC | 0.83% | New | 273,220 | $6.7M |
| Ieq Capital, LLC | 0.03% | Add +11.3% | 266,112 | $6.5M |
| Occudo Quantitative Strategies LP | 0.35% | Add +14.4% | 203,298 | $6.4M |
| GW&K Investment Management, LLC | 0.06% | Reduce -3.6% | 257,588 | $6.3M |
| Voloridge Investment Management, LLC | 0.02% | Reduce -51.0% | 252,168 | $6.2M |
| Swiss National Bank | 0.00% | Reduce -0.9% | 245,400 | $6.0M |
| Creative Planning | 0.00% | Add +25.3% | 242,751 | $6.0M |
| Voleon Capital Management LP | 0.13% | Reduce -16.4% | 239,501 | $5.9M |
| LSV Asset Management | 0.01% | Reduce -6.2% | 233,500 | $5.7M |
| Sei Investments Co. | 0.01% | Add +159.2% | 231,774 | $5.7M |
| Edgestream Partners, L.P. | 0.18% | Add +9.9% | 226,292 | $5.6M |
| Bank of Montreal | 0.00% | Reduce -13.1% | 207,106 | $5.1M |
| BW Gestao de Investimentos Ltda. | 0.23% | Reduce -62.1% | 207,096 | $5.1M |
| Thornburg Investment Management Inc. | 0.05% | Reduce -18.4% | 205,467 | $5.1M |
| KBC Group NV | 0.01% | Add +4567.1% | 197,790 | $4.9M |
| Sequoia Financial Advisors, LLC | 0.03% | Add +1.9% | 197,198 | $4.8M |
| State of Wisconsin Investment Board | 0.01% | Add +98.0% | 192,552 | $4.7M |
| Rockingstone Advisors LLC | 2.16% | Reduce -12.5% | 191,837 | $4.7M |
| Mackenzie Financial Corp. | 0.01% | Add +36.8% | 181,470 | $4.5M |
| Ionic Capital Management LLC | 4.39% | Reduce -18.7% | 177,722 | $4.4M |
| Barclays PLC | 0.00% | Reduce -39.3% | 172,928 | $4.3M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | Add +58.0% | 168,987 | $4.2M |
| Deutsche Bank AG | 0.00% | Add +4.9% | 168,614 | $4.1M |
| LGT Fund Management Co Ltd. | 0.18% | New | 164,700 | $4.0M |
| Y-Intercept (Hong Kong) Ltd | 0.08% | Reduce -57.3% | 163,827 | $4.0M |
| Martingale Asset Management L P | 0.10% | Add +97.4% | 160,598 | $3.9M |
| Rhumbline Advisers | 0.00% | Reduce -10.5% | 157,416 | $3.9M |
| Gsa Capital Partners LLP | 0.23% | Add +510.6% | 148,995 | $3.7M |
| California State Teachers Retirement System | 0.00% | Add +24.0% | 145,732 | $3.6M |
| State of Alaska, Department of Revenue | 0.04% | No change | 140,705 | $3.5M |
| Invesco Ltd. | 0.00% | Reduce -17.4% | 135,985 | $3.3M |
| Schonfeld Strategic Advisors LLC | 0.03% | Reduce -23.3% | 130,320 | $3.2M |
"% of holder's portfolio" is CSTM's weight in each manager's 13F, not the share of Constellium SE the manager owns.