Constellium SE
DE ˙ DB ˙ FR0013467479
30,40 € ↑1,20 (4,11%)
2026-06-03
DEL PRIS
SecurityDE:3OK / Constellium SE
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership2,317,008 shares
Latest Disclosed Value $ 43,675,601
Alliancebernstein L.p. reports 1,573.53% increase in ownership of 3OK / Constellium SE

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 2,317,008 shares of Constellium SE (DE:3OK) valued at $48,657,168 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 138,450 shares of Constellium SE. This represents a change in shares of 1,573.53% during the quarter. The current value of the position is $70,437,043 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F CONSTELLIUM SE CL A SHS F21107101 2,317,008 2,178,558 1,573.53 43,676 1,574.01 0.0141
2026-02-17 2025-12-31 13F CONSTELLIUM SE CL A SHS F21107101 138,450 -19,300 -12.23 2,610 11.16 0.0008
2025-11-14 2025-09-30 13F CONSTELLIUM SE CL A SHS F21107101 157,750 1,500 0.96 2,347 12.95 0.0007
2025-08-14 2025-06-30 13F CONSTELLIUM SE CL A SHS F21107101 156,250 21,400 15.87 2,078 52.79 0.0007
2025-05-15 2025-03-31 13F CONSTELLIUM SE CL A SHS F21107101 134,850 0 0.00 1,361 -1.73 0.0005
2025-02-12 2024-12-31 13F CONSTELLIUM SE CL A SHS F21107101 134,850 0 0.00 1,385 -36.86 0.0005
2024-11-14 2024-09-30 13F CONSTELLIUM SE CL A SHS F21107101 134,850 0 0.00 2,193 -13.73 0.0007
2024-08-14 2024-06-30 13F CONSTELLIUM SE CL A SHS F21107101 134,850 8,930 7.09 2,542 -8.73 0.0009
2024-05-14 2024-03-31 13F CONSTELLIUM SE CL A SHS F21107101 125,920 0 0.00 2,784 10.78 0.0010
2024-02-14 2023-12-31 13F CONSTELLIUM SE CL A SHS F21107101 125,920 -2,680 -2.08 2,513 7.39 0.0010
2023-11-14 2023-09-30 13F CONSTELLIUM SE CL A SHS F21107101 128,600 -15 -0.01 2,341 5.79 0.0010
2023-08-15 2023-06-30 13F CONSTELLIUM SE CL A SHS F21107101 128,615 15 0.01 2,212 12.57 0.0009
2023-05-15 2023-03-31 13F CONSTELLIUM SE CL A SHS F21107101 128,600 0 0.00 1,965 29.19 0.0008
2023-02-15 2022-12-31 13F CONSTELLIUM SE CL A SHS F21107101 128,600 -1 -0.00 1,521 16.64 0.0007
2022-11-15 2022-09-30 13F CONSTELLIUM SE CL A SHS F21107101 128,601 1 0.00 1,304 -23.25 0.0006
2022-08-15 2022-06-30 13F CONSTELLIUM SE CL A SHS F21107101 128,600 0 0.00 1,699 -26.61 0.0008
2022-05-13 2022-03-31 13F CONSTELLIUM SE CL A SHS F21107101 128,600 400 0.31 2,315 0.83 0.0009
2022-02-14 2021-12-31 13F CONSTELLIUM SE CL A SHS F21107101 128,200 0 0.00 2,296 -4.65 0.0008
2021-11-10 2021-09-30 13F CONSTELLIUM SE CL A SHS F21107101 128,200 0 0.00 2,408 -0.86 0.0009
2021-07-30 2021-06-30 13F CONSTELLIUM SE CL A SHS F21107101 128,200 128,200 2,429 0.0010
2021-05-06 2021-03-31 13F CONSTELLIUM SE CL A SHS F21107101 0 -295,264 -100.00 0 -100.00
2021-02-08 2020-12-31 13F CONSTELLIUM SE CL A SHS F21107101 295,264 0 0.00 4,131 78.21 0.0019
2020-11-12 2020-09-30 13F CONSTELLIUM SE CL A SHS F21107101 295,264 0 0.00 2,318 2.20 0.0012
2020-08-13 2020-06-30 13F CONSTELLIUM SE CL A SHS F21107101 295,264 -600 -0.20 2,268 47.18 0.0013
2020-05-14 2020-03-31 13F CONSTELLIUM SE CL A SHS F21107101 295,864 -235,933 -44.37 1,541 -78.37 0.0011
2020-02-18 2019-12-31 13F CONSTELLIUM SE CL A SHS F21107101 531,797 -54,850 -9.35 7,126 -4.43 0.0040
2019-11-14 2019-09-30 13F CONSTELLIUM SE CL A N22035104 586,647 0 0.00 7,456 26.59 0.0046
2019-08-14 2019-06-30 13F CONSTELLIUM CL A N22035104 586,647 -667 -0.11 5,890 25.67 0.0037
2019-05-14 2019-03-31 13F CONSTELLIUM CL A N22035104 587,314 -190,445 -24.49 4,687 -13.79 0.0031
2019-02-13 2018-12-31 13F CONSTELLIUM CL A N22035104 777,759 -190 -0.02 5,437 -43.41 0.0040
2018-11-08 2018-09-30 13F CONSTELLIUM CL A N22035104 777,949 1,416 0.18 9,608 20.13 0.0063
2018-08-13 2018-06-30 13F CONSTELLIUM CL A N22035104 776,533 -3,600 -0.46 7,998 -5.51 0.0056
2018-05-14 2018-03-31 13F CONSTELLIUM CL A N22035104 780,133 748,300 2,350.71 8,464 2,284.23 0.0061
2018-02-13 2017-12-31 13F CONSTELLIUM CL A N22035104 31,833 -45,675 -58.93 355 -55.29 0.0003
2017-11-13 2017-09-30 13F CONSTELLIUM CL A N22035104 77,508 0 0.00 794 48.41 0.0006
2017-08-10 2017-06-30 13F CONSTELLIUM CL A N22035104 77,508 5,000 6.90 535 13.59 0.0004
2017-05-11 2017-03-31 13F CONSTELLIUM CL A N22035104 72,508 0 0.00 471 10.05 0.0004
2017-02-13 2016-12-31 13F CONSTELLIUM CL A N22035104 72,508 24,884 52.25 428 24.78 0.0004
2016-11-10 2016-09-30 13F CONSTELLIUM CL A N22035104 47,624 47,624 343 0.0003
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.