Position in CSTM
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$9,880,889
+$2,303,397 QoQ
Shares Held
401,989
0.0% QoQ
Ownership
0.295%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2020
22 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in CSTM Over Time
Shares Held
Position Value (USD)
Derivatives in CSTM
reported options exposure · as of Dec 31, 2024CallValue
$3,081,000
CallShares
300,000
PutValue
$0
PutShares
0
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, 2026Hudson Bay Capital Management LP holds $13,695,888 across 3 Aluminum names. CSTM ranks #1 (72.1% of the industry book) .
All Filings in CSTM
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23 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $9,880,889 | 401,989 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $7,577,492 | 401,989 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $4,575,406 | 307,487 | Shares | Sole | 2025-12-15 | |
| 2025-06-30 | $6,773,636 | 509,296 | Shares | Sole | 2025-08-18 | |
| 2025-03-31 | $2,457,076 | 243,516 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $7,430,509 | 723,516 | Shares | Sole | 2025-02-14 | |
| 2024-12-31 | $3,081,000 | 300,000 | Call | Sole | 2025-02-14 | |
| 2024-09-30 | $6,180,117 | 380,081 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $5,102,129 | 270,670 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $4,830,150 | 218,460 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $2,663,861 | 133,460 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $679,988 | 37,362 | Shares | Sole | 2023-12-07 | |
| 2023-06-30 | $5,606,426 | 325,955 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $7,952,796 | 520,471 | Shares | Sole | 2023-05-16 | |
| 2022-09-30 | $573,427 | 56,551 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $5,255,228 | 397,822 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $6,562,440 | 364,580 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $7,606,735 | 424,720 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $9,643,191 | 513,482 | Shares | Sole | 2021-12-29 | |
| 2021-06-30 | $6,021,570 | 317,761 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $7,205,748 | 490,187 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $7,737,938 | 553,105 | Shares | Sole | 2021-03-04 | |
| 2020-09-30 | $1,066,124 | 135,812 | Shares | Sole | 2020-11-12 | |
| No filing history on record for this holder in this stock. | ||||||