Constellium SE
US ˙ NYSE ˙ FR0013467479

SecurityCSTM / Constellium SE
InstitutionTrexquant Investment LP
Latest Disclosed Ownership483,077 shares
Latest Disclosed Value $ 11,874,033
Trexquant Investment LP reports 24.92% increase in ownership of CSTM / Constellium SE

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 483,077 shares of Constellium SE (US:CSTM) valued at $11,874,033 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 386,700 shares of Constellium SE. This represents a change in shares of 24.92% during the quarter. The current value of the position is $16,371,480 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 483,077 96,377 24.92 11,874 62.90 0.0853
2026-02-17 2025-12-31 13F CONSTELLIUM SE CL A SHS F21107101 386,700 -99,632 -20.49 7,289 0.73 0.0650
2025-11-14 2025-09-30 13F CONSTELLIUM SE CL A SHS F21107101 486,332 -234,815 -32.56 7,237 -24.55 0.0745
2025-08-12 2025-06-30 13F CONSTELLIUM SE CL A SHS F21107101 721,147 721,147 9,591 0.1082
2025-02-12 2024-12-31 13F CONSTELLIUM SE CL A SHS F21107101 0 -151,313 -100.00 0 -100.00
2024-11-12 2024-09-30 13F CONSTELLIUM SE CL A SHS F21107101 151,313 58,518 63.06 2,460 40.65 0.0311
2024-08-13 2024-06-30 13F CONSTELLIUM SE CL A SHS F21107101 92,795 92,795 1,749 0.0267
2024-05-14 2024-03-31 13F CONSTELLIUM SE CL A SHS F21107101 0 -15,576 -100.00 0 -100.00
2024-02-09 2023-12-31 13F CONSTELLIUM SE CL A SHS F21107101 15,576 -120,606 -88.56 311 -87.49 0.0070
2023-11-13 2023-09-30 13F CONSTELLIUM SE CL A SHS F21107101 136,182 20,641 17.86 2,479 24.71 0.0622
2023-08-11 2023-06-30 13F CONSTELLIUM SE CL A SHS F21107101 115,541 39,348 51.64 1,987 70.70 0.0521
2023-05-15 2023-03-31 13F CONSTELLIUM SE CL A SHS F21107101 76,193 -24,209 -24.11 1,164 -1.94 0.0320
2023-02-13 2022-12-31 13F CONSTELLIUM SE CL A SHS F21107101 100,402 51,052 103.45 1,188 137.40 0.0337
2022-11-14 2022-09-30 13F CONSTELLIUM SE CL A SHS F21107101 49,350 20,097 68.70 500 29.53 0.0176
2022-08-11 2022-06-30 13F CONSTELLIUM SE CL A SHS F21107101 29,253 -153,269 -83.97 386 -88.25 0.0173
2022-05-13 2022-03-31 13F CONSTELLIUM SE CL A SHS F21107101 182,522 182,522 3,285 0.1543
2021-08-12 2021-06-30 13F CONSTELLIUM SE CL A SHS F21107101 0 -31,334 -100.00 0 -100.00
2021-05-13 2021-03-31 13F CONSTELLIUM SE CL A SHS F21107101 31,334 7,526 31.61 461 38.44 0.0423
2021-02-11 2020-12-31 13F CONSTELLIUM SE CL A SHS F21107101 23,808 -54,442 -69.57 333 -45.77 0.0353
2020-11-06 2020-09-30 13F CONSTELLIUM SE CL A SHS F21107101 78,250 23,114 41.92 614 45.15 0.0395
2020-08-07 2020-06-30 13F CONSTELLIUM SE CL A SHS F21107101 55,136 55,136 423 0.0294
2020-02-12 2019-12-31 13F CONSTELLIUM SE CL A N22035104 0 -25,314 -100.00 0 -100.00
2020-02-18 2019-09-30 13F/A-1 CONSTELLIUM SE CL A N22035104 25,314 25,314 322 0.0278
2019-11-08 2019-09-30 13F CONSTELLIUM SE CL A N22035104 25,314 25,314 322 27,810.3095
2019-08-09 2019-06-30 13F CONSTELLIUM CL A N22035104 0 -33,662 -100.00 0 -100.00
2019-05-13 2019-03-31 13F CONSTELLIUM CL A N22035104 33,662 33,662 269 0.0191
2018-08-07 2018-06-30 13F CONSTELLIUM CL A N22035104 0 -45,795 -100.00 0 -100.00
2018-05-03 2018-03-31 13F CONSTELLIUM CL A N22035104 45,795 3,083 7.22 497 4.41 0.0346
2018-02-08 2017-12-31 13F CONSTELLIUM CL A N22035104 42,712 42,712 476 0.0523
2017-11-09 2017-09-30 13F CONSTELLIUM CL A N22035104 0 -12,723 -100.00 0 -100.00
2017-08-01 2017-06-30 13F CONSTELLIUM CL A N22035104 12,723 12,723 88 0.0241
2017-05-08 2017-03-31 13F CONSTELLIUM CL A N22035104 0 -103,374 -100.00 0 -100.00
2017-02-10 2016-12-31 13F CONSTELLIUM CL A N22035104 103,374 88,339 587.56 610 464.81 0.0965
2016-11-10 2016-09-30 13F CONSTELLIUM CL A N22035104 15,035 15,035 108 0.0241
2016-08-10 2016-06-30 13F CONSTELLIUM CL A N22035104 0 -155,156 -100.00 0 -100.00
2016-05-11 2016-03-31 13F CONSTELLIUM CL A N22035104 155,156 -33,978 -17.97 805 -44.71 0.0943
2016-02-10 2015-12-31 13F CONSTELLIUM CL A N22035104 189,134 113,367 149.63 1,456 217.21 0.1282
2015-11-02 2015-09-30 13F CONSTELLIUM CL A N22035104 75,767 75,767 459 0.0395
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.