Position in CSTM
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$19,664,000
-$5,783,500 QoQ
Shares Held
800,000
-40.7% QoQ
Ownership
0.588%
of shares outstanding
% of Portfolio
14.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2021
21 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in CSTM Over Time
Shares Held
Position Value (USD)
Position in Aluminum
Basic Materials · as of Mar 31, 2026Soapstone Management L.P. holds $19,664,000 across 1 Aluminum name. CSTM ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | CSTM |
Constellium SE
This page
|
800,000 | $19,664,000 |
All Filings in CSTM
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21 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $19,664,000 | 800,000 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $25,447,500 | 1,350,000 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $24,836,193 | 1,669,099 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $23,628,234 | 1,776,559 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $15,913,937 | 1,577,199 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $15,815,358 | 1,539,957 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $14,552,700 | 895,000 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $13,500,803 | 716,223 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $20,451,750 | 925,000 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $15,968,000 | 800,000 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $14,560,000 | 800,000 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $14,620,000 | 850,000 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $12,224,000 | 800,000 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $9,464,000 | 800,000 | Shares | Sole | 2023-01-25 | |
| 2022-09-30 | $8,112,000 | 800,000 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $10,568,000 | 800,000 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $13,500,000 | 750,000 | Shares | Sole | 2022-05-06 | |
| 2021-12-31 | $13,432,500 | 750,000 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $11,329,635 | 603,282 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $11,370,000 | 600,000 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $2,174,482 | 147,924 | Shares | Sole | 2021-05-17 | |
| No filing history on record for this holder in this stock. | ||||||