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Equibles

JANE STREET GROUP, LLC

Position in CSTM — Constellium SE

CIK 1595888 NEW YORK, NY
Back to CSTM Full portfolio

Position in CSTM

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$20,462,627
+$14,548,780 QoQ
Shares Held
832,491
+165.4% QoQ
Ownership
0.611%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in CSTM Over Time

Shares Held

Position Value (USD)

Derivatives in CSTM

reported options exposure · as of Mar 31, 2026
CallValue
$2,290,856
CallShares
93,200
PutValue
$1,573,120
PutShares
64,000

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Aluminum

Basic Materials · as of Mar 31, 2026

JANE STREET GROUP, LLC holds $105,348,443 across 4 Aluminum names. CSTM ranks #2 (19.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 CENX
Century Aluminum Co
 1,320,942 $77,526,085
2 CSTM
Constellium SE
This page 		832,491 $20,462,627
3 KALU
Kaiser Aluminum Corp
 50,671 $6,106,361
4 AA
Alcoa Corp
 18,896 $1,253,370

All Filings in CSTM

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,573,120 64,000
2026-03-31 $2,290,856 93,200
2026-03-31 $20,462,627 832,491
2025-12-31 $5,913,847 313,732
2025-12-31 $337,415 17,900
2025-09-30 $305,040 20,500
2025-09-30 $3,746,158 251,758
2025-09-30 $1,916,544 128,800
2025-06-30 $167,580 12,600
2025-06-30 $3,256,172 244,825
2025-06-30 $1,928,500 145,000
2025-03-31 $203,818 20,200
2025-03-31 $1,201,719 119,100
2025-03-31 $3,467,791 343,686
2024-12-31 $1,801,305 175,395
2024-12-31 $1,063,972 103,600
2024-09-30 $2,728,622 167,812
2024-09-30 $689,424 42,400
2024-06-30 $5,200,186 275,872
2024-03-31 $2,660,208 120,317
2023-12-31 $3,002,182 150,410
2023-09-30 $797,141 43,799
2023-06-30 $1,265,128 73,554
2023-03-31 $351,791 23,023
2022-12-31 $136,636 11,550
2022-06-30 $140,105 10,606
2022-03-31 $1,153,728 64,096
2022-03-31 $2,649,600 147,200
2022-03-31 $1,204,200 66,900
2021-12-31 $3,967,065 221,500
2021-12-31 $1,108,629 61,900
2021-12-31 $273,467 15,269
2021-09-30 $2,640,468 140,600
2021-09-30 $1,817,904 96,800
2021-09-30 $539,811 28,744
2021-06-30 $5,031,225 265,500
2021-06-30 $1,684,579 88,896
2021-06-30 $3,604,290 190,200
2021-03-31 $1,609,708 109,504
2021-03-31 $764,400 52,000
2021-03-31 $7,673,400 522,000
2020-12-31 $1,023,633 73,169
2020-12-31 $979,300 70,000
2020-12-31 $5,768,077 412,300
2020-09-30 $239,754 30,542
2020-09-30 $397,995 50,700
2020-09-30 $467,860 59,600
2020-06-30 $996,096 129,700
2020-06-30 $1,039,104 135,300
2020-03-31 $106,330 20,409

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