Security key
156431108
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 31,547,798
- Total 13F value
- $1,135,088,171
- Share change
- -609,003
- SEC-reported price per share
- $35.98
- Number of holders
- 35
- Value change
- -$24,844,280
- Number of buys
- 14
- Number of sells
- 19
- Shares outstanding
- 99,009,267
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2026
Institutions
35
Top holders
10
CENX full security history
Ownership snapshot
Full 13F holder table
CENTURY ALUMINUM CO SEC filings
CENTURY ALUMINUM CO company facts
Broader feeds
Reporting periods
Holder history for CUSIP 156431108
Recent filing periods:
Ownership snapshot
Top reported holders of CENX - CENTURY ALUMINUM CO - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
GLENCORE INTERNATIONAL AG
Disclosed value leader
GLENCORE INTERNATIONAL AG
Comparable rows
3/15
Latest evidence
30 Sep 2026
13D/G
3/4/5
13F
Lead comparable stake: 30%
12 rows are not safely comparable across share classes.
13D/G row: GLENCORE INTERNATIONAL AG
Showing 1-6 of 15 holder rows.
Quick read
GLENCORE INTERNATIONAL AG leads the comparable SEC ownership view at 30%.
3 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens GLENCORE INTERNATIONAL AG's linked filing trail.
Comparable ownership
Top 3
GLENCORE INTERNATIONAL AG
30%
BlackRock, Inc.
10%
STATE STREET CORP
5.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| GLENCORE INTERNATIONAL AG |
13D/G
3/4/5
10%+ Owner
|
30%
Reported 13D/G
· 04 Mar 2026
|
$1,499,677,358
29,690,702 shares
|
-$318,983,025 | 04 Mar 2026 |
| BlackRock, Inc. |
13D/G
13F
Company
|
10%
Reported 13D/G
· 30 Sep 2026
|
$486,323,617
10,395,973 shares
|
+$45,769,178 | 30 Sep 2026 |
| STATE STREET CORP |
13F
13D/G
Company · STATE STREET CORPORATION
|
5.6%
Reported 13D/G
· 30 Jun 2026
|
$255,020,547
5,542,720 shares
|
— | 30 Jun 2026 |
| Glencore AG |
3/4/5
10%+ Owner
|
—
mixed-class rows
|
$142,054,037
11,759,367 shares
mixed-class rows
|
— | 30 Sep 2022 |
| Glencore plc |
13F
Company
|
—
denominator unverified
|
$1,366,069,199
29,690,702 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$219,638,857
4,773,720 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
35
Shares
31,547,798
Rows available
35
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2026 vs Q2 2026 Across Filers
Q2 2026 holders
412
Q3 2026 holders
35
Holder diff
-377
| Investor | Q2 2026 Shares | Q3 2026 Shares | Share Diff | Share Chg % | Q2 2026 value | Q3 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend