CENTURY ALUM CO (CENX): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in CENX · Materials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
28
13F filers
Aggregate Value
$425.9M
Across holders
Last Price
$43.66
2026-08-24
Sector
Materials
GICS
Quarterly fund activity15 increased13 reduced5 exited
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| Fisher Asset Management, LLC CIK 0000850529 | Institutional Manager | 1.53M | $70.6M | 16.6% | 0.0% | Added | +$31.4M | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 1.12M | $51.4M | 12.1% | 0.0% | Reduced | $-40.1M | Q2 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 847K | $39.0M | 9.2% | 0.0% | Added | +$11.8M | Q2 2026 |
| SHAW D E & CO INC CIK 0001009207 | Hedge Fund | 796K | $36.6M | 8.6% | 0.0% | Reduced | +$33.3M | Q2 2026 |
| BALYASNY ASSET MANAGEMENT LLC CIK 0001218710 | Hedge Fund | 760K | $34.9M | 8.2% | 0.0% | Added | +$30.6M | Q2 2026 |
| Squarepoint Ops LLC CIK 0001642575 | Hedge Fund | 679K | $31.3M | 7.3% | 0.0% | Added | +$12.4M | Q2 2026 |
| Woodline Partners LP CIK 0001784547 | Hedge Fund | 627K | $28.8M | 6.8% | 0.1% | Added | — | Q2 2026 |
| Bridgewater Associates, LP CIK 0001350694 | Hedge Fund | 474K | $21.8M | 5.1% | 0.1% | Reduced | $-11.9M | Q2 2026 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC CIK 0001556921 | Hedge Fund | 393K | $18.1M | 4.2% | 0.1% | Reduced | $-15.1M | Q2 2026 |
| First Eagle Investment Management, LLC CIK 0001325447 | Institutional Manager | 362K | $16.7M | 3.9% | 0.0% | Added | +$1.7M | Q2 2026 |
Added
Institutional Manager
$70.6M· 16.6% of total· 0.0% port· 1.53M sh· +$31.4M QoQ· Q2 2026
Reduced
Hedge Fund
$51.4M· 12.1% of total· 0.0% port· 1.12M sh· $-40.1M QoQ· Q2 2026
Added
Hedge Fund
$39.0M· 9.2% of total· 0.0% port· 847K sh· +$11.8M QoQ· Q2 2026
Reduced
Hedge Fund
$36.6M· 8.6% of total· 0.0% port· 796K sh· +$33.3M QoQ· Q2 2026
Added
Hedge Fund
$34.9M· 8.2% of total· 0.0% port· 760K sh· +$30.6M QoQ· Q2 2026
Added
Hedge Fund
$31.3M· 7.3% of total· 0.0% port· 679K sh· +$12.4M QoQ· Q2 2026
Added
Hedge Fund
$28.8M· 6.8% of total· 0.1% port· 627K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$21.8M· 5.1% of total· 0.1% port· 474K sh· $-11.9M QoQ· Q2 2026
Reduced
Hedge Fund
$18.1M· 4.2% of total· 0.1% port· 393K sh· $-15.1M QoQ· Q2 2026
Added
Institutional Manager
$16.7M· 3.9% of total· 0.0% port· 362K sh· +$1.7M QoQ· Q2 2026
Reduced
Hedge Fund
$16.3M· 3.8% of total· 0.1% port· 355K sh· $-3.8M QoQ· Q2 2026
Reduced
Hedge Fund
$13.6M· 3.2% of total· 0.0% port· 295K sh· +$12.7M QoQ· Q2 2026
Reduced
Hedge Fund
$13.3M· 3.1% of total· 0.0% port· 290K sh· $-88.5M QoQ· Q2 2026
Added
Hedge Fund
$8.7M· 2.0% of total· 0.0% port· 188K sh· +$8.5M QoQ· Q2 2026
Added
Hedge Fund
$4.6M· 1.1% of total· 0.0% port· 100K sh· +$4.3M QoQ· Q2 2026
Reduced
Hedge Fund
$4.3M· 1.0% of total· 0.0% port· 94K sh· $-2.1M QoQ· Q2 2026
Added
Hedge Fund
$3.7M· 0.9% of total· 0.1% port· 79K sh· +$2.6M QoQ· Q2 2026
Added
Hedge Fund
$2.8M· 0.7% of total· 0.0% port· 61K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$2.3M· 0.5% of total· 0.1% port· 49K sh· $-16K QoQ· Q2 2026
Added
Hedge Fund
$2.1M· 0.5% of total· 0.0% port· 46K sh· +$2.0M QoQ· Q2 2026
Reduced
Hedge Fund
$1.4M· 0.3% of total· 0.0% port· 30K sh· $-8K QoQ· Q2 2026
Added
Hedge Fund
$1.3M· 0.3% of total· 0.0% port· 28K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$816K· 0.2% of total· 0.0% port· 18K sh· $-3.3M QoQ· Q2 2026
Reduced
Hedge Fund
$699K· 0.2% of total· 0.0% port· 15K sh· $-221K QoQ· Q2 2026
Added
Hedge Fund
$461K· 0.1% of total· 0.0% port· 10K sh· $-8.8M QoQ· Q2 2026
Reduced
Hedge Fund
$287K· 0.1% of total· 0.0% port· 6K sh· $-1.0M QoQ· Q2 2026
Added
Hedge Fund
$100K· 0.0% of total· 0.0% port· 2K sh· +$98K QoQ· Q2 2026
Added
Hedge Fund
$19K· 0.0% of total· 0.0% port· 1K sh· — QoQ· Q1 2025
1–10 of 28
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