Latest Period
Q2 2026
Security Snapshot
CONSTELLIUM SE - COMMON STOCK (CSTM) Institutional Ownership
CUSIP: F21107101
13F Institutional Holders and Ownership History from Q1 2019 to Q2 2026
Institutions Reporting
385
Shares (Excl. Options)
119,147,567
Price
$31.87
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- Security type / class
- Equity / COMMON STOCK
- Symbol
- CSTM on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 119,147,567
- Total 13F value
- $3,773,220,729
- Portfolio coverage rank
- 0.01%
- Share change
- -5,190,957
- Value change
- -$156,305,784
- Number of holders
- 385
- Shares outstanding
- 137,170,141
- SEC-reported price per share
- $29.33
- Insider filing price
- $29.33
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- CSTM - CONSTELLIUM SE - COMMON STOCK is tracked under CUSIP F21107101.
- 385 institutions reported positions in Q2 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 311 to 385 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $3,040,005,994 to $3,773,220,729.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 385 institutions filings for Q2 2026.
Security key
F21107101
Latest holder period
Q2 2026
13F holders
385
13D/G owners
5
CIK / CUSIP context first
Open Q2 2026 holders
CSTM full holder history
CONSTELLIUM SE SEC filings
CONSTELLIUM SE company facts
CONSTELLIUM SE insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP F21107101:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
CSTM
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Bpifrance Participations SA | 6.2% | $248,587,451 | 8,403,903 | Bpifrance Participations S.A. | 26 May 2026 | |||
| BlackRock, Inc. | 5.8% | +16% | $110,045,038 | +$14,694,811 | 8,274,063 | +15% | BlackRock, Inc. | 30 Jun 2025 |
| T. Rowe Price Investment Management, Inc. | 4.5% | -55% | $85,590,905 | -$109,593,690 | 6,274,993 | -56% | T. Rowe Price Investment Management, Inc. | 31 Aug 2025 |
| MILLENNIUM MANAGEMENT LLC | 2.5% | -56% | $85,294,837 | -$97,918,830 | 3,470,091 | -53% | Millennium Management LLC | 31 Mar 2026 |
| FMR LLC | 1.6% | -70% | $65,051,568 | -$141,295,243 | 2,194,722 | -68% | FMR LLC | 30 Jun 2026 |
As of 30 Jun 2026, 385 institutional investors reported holding 119,147,567 shares of CONSTELLIUM SE - COMMON STOCK (CSTM). This represents 87% of the company’s total 137,170,141 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
58%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9.3% | 12,802,322 | -1.2% | 0.01% | $408,010,002 |
| Bpifrance SA | 6.1% | 8,403,903 | -33% | 20% | $267,832,389 |
| MORGAN STANLEY | 4.5% | 6,183,255 | +93% | 0.01% | $197,060,369 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.2% | 4,391,756 | +12% | 0.01% | $139,965,264 |
| AMERICAN CENTURY COMPANIES INC | 3.1% | 4,220,743 | +102% | 0.06% | $134,515,143 |
| T. Rowe Price Investment Management, Inc. | 2.2% | 2,980,566 | -25% | 0.06% | $94,991,000 |
| STATE STREET CORP | 2.2% | 2,954,799 | +6.9% | 0% | $94,169,444 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.1% | 2,844,747 | -12% | 0.04% | $90,662,087 |
| Nuveen, LLC | 2% | 2,770,828 | -2% | 0.02% | $88,306,289 |
| Kinetic Partners Management, LP | 1.9% | 2,542,400 | +94% | 1.9% | $81,026,288 |
| Encompass Capital Advisors LLC | 1.8% | 2,421,349 | -2.3% | 3.3% | $77,168,393 |
| AQR CAPITAL MANAGEMENT LLC | 1.8% | 2,402,937 | +16% | 0.03% | $76,581,596 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 1.7% | 2,278,202 | +11% | 0.1% | $72,606,298 |
| D. E. Shaw & Co., Inc. | 1.6% | 2,198,618 | -32% | 0.04% | $70,069,955 |
| FMR LLC | 1.6% | 2,194,722 | -68% | 0% | $69,945,799 |
| ALLIANCEBERNSTEIN L.P. | 1.6% | 2,162,231 | -6.7% | 0.02% | $53,147,638 |
| ACADIAN ASSET MANAGEMENT LLC | 1.5% | 2,107,513 | +66% | 0.08% | $67,142,000 |
| GOLDMAN SACHS GROUP INC | 1.5% | 2,070,665 | +51% | 0.01% | $65,992,094 |
| MILLENNIUM MANAGEMENT LLC | 1.4% | 1,956,365 | -44% | 0.04% | $62,349,353 |
| BRIGHTLINE CAPITAL MANAGEMENT, LLC | 1.4% | 1,923,000 | +4.1% | 13% | $61,286,010 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.4% | 1,856,018 | -3% | 0.09% | $59,151,000 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.3% | 1,789,723 | +7.3% | 0% | $57,033,036 |
| SG Americas Securities, LLC | 0.9% | 1,234,038 | -18% | 0.02% | $39,329,000 |
| JPMORGAN CHASE & CO | 0.84% | 1,146,089 | -44% | 0% | $35,885,382 |
| WESTWOOD HOLDINGS GROUP INC | 0.8% | 1,099,362 | -22% | 0.26% | $35,036,666 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
30
Latest
Q2 2026
Rows shown
1-25 of 30
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 119,147,567 | $3,773,220,729 | -$156,305,784 | $31.87 | 385 |
| 2026 Q1 | 124,227,783 | $3,040,005,994 | +$65,600,867 | $24.58 | 311 |
| 2025 Q4 | 122,571,686 | $2,310,482,590 | -$97,429,009 | $18.85 | 251 |
| 2025 Q3 | 127,194,470 | $1,892,670,941 | -$60,109,911 | $14.88 | 233 |
| 2025 Q2 | 131,403,730 | $1,747,763,305 | +$26,240,393 | $13.30 | 220 |
| 2025 Q1 | 131,724,011 | $1,329,603,393 | -$41,371,431 | $10.09 | 219 |
| 2024 Q4 | 135,085,234 | $1,387,263,339 | -$40,978,802 | $10.27 | 216 |
| 2024 Q3 | 135,141,064 | $2,197,521,719 | -$33,275,385 | $16.26 | 219 |
| 2024 Q2 | 135,236,292 | $2,551,728,494 | -$3,748,186 | $18.85 | 222 |
| 2024 Q1 | 135,670,703 | $2,999,674,203 | +$156,844,496 | $22.11 | 203 |
| 2023 Q4 | 131,982,424 | $2,630,394,795 | -$32,542,733 | $19.96 | 191 |
| 2023 Q3 | 133,798,731 | $2,427,376,081 | -$19,013,869 | $18.20 | 190 |
| 2023 Q2 | 134,840,201 | $2,319,248,185 | +$28,822,207 | $17.20 | 184 |
| 2023 Q1 | 133,335,658 | $2,037,448,361 | +$15,551,402 | $15.28 | 180 |
| 2022 Q4 | 132,820,125 | $1,571,467,832 | +$9,278,194 | $11.83 | 183 |
| 2022 Q3 | 131,333,210 | $1,332,142,046 | -$146,517,561 | $10.14 | 173 |
| 2022 Q2 | 131,191,833 | $1,733,465,535 | +$15,771,631 | $13.21 | 182 |
| 2022 Q1 | 129,862,771 | $2,337,406,926 | +$80,052,438 | $18.00 | 180 |
| 2021 Q4 | 125,444,986 | $2,245,680,516 | +$37,513,774 | $17.91 | 158 |
| 2021 Q3 | 125,499,667 | $2,357,524,460 | +$260,021,262 | $18.78 | 159 |
| 2021 Q2 | 111,678,826 | $2,115,575,656 | +$140,903,088 | $18.95 | 145 |
| 2021 Q1 | 104,659,629 | $1,537,958,550 | -$232,773 | $14.70 | 130 |
| 2020 Q4 | 104,469,239 | $1,460,530,885 | +$75,165,645 | $13.99 | 133 |
| 2020 Q3 | 99,355,679 | $780,524,275 | +$14,546,095 | $7.85 | 123 |
| 2020 Q2 | 97,654,422 | $750,539,320 | -$27,607,702 | $7.68 | 127 |