Position in CSTM
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$28,119,092
+$5,552,440 QoQ
Shares Held
882,306
-3.9% QoQ
Ownership
0.648%
of shares outstanding
% of Portfolio
0.08%
of 13F equity value
Holder Rank
#32
of 386 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority
Sole 75%
Shared 0%
None 25%
Common Shares in CSTM Over Time
Shares Held
Position Value (USD)
Position in Aluminum
Basic Materials · as of Jun 30, 2026WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $28,119,092 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
|
882,306 | $28,119,092 |
All Filings in CSTM
Export CSV
2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $28,119,092 | 882,306 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $22,566,652 | 918,090 | Shares | Sole | 2026-05-08 | |
| No filing history on record for this holder in this stock. | ||||||