Century Aluminum
CENX
387 hedge funds and large institutions have $5.92B invested in Century Aluminum in 2026 Q1 according to their latest regulatory filings, with 108 funds opening new positions, 129 increasing their positions, 122 reducing their positions, and 41 closing their positions.
215% more call options, than puts
Call options by funds: $162M | Put options by funds: $51.5M
163% more first-time investments, than exits
New positions opened: 108 | Existing positions closed: 41
51% more capital invested
Capital invested by funds: $3.91B → $5.92B (+$2.01B)
19% more funds holding
Funds holding: 325 → 387 (+62)
6% more repeat investments, than reductions
Existing positions increased: 129 | Existing positions reduced: 122
0% more funds holding in top 10
Funds holding in top 10: 13 → 13 (0)
5% less ownership
Funds ownership: 107.02% → 102.02% (-5%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$133M |
| 2 |
Invesco
Atlanta,
Georgia
|
+$72.6M |
| 3 |
Jane Street
New York
|
+$64.1M |
| 4 |
ECA
Encompass Capital Advisors
New York
|
+$52.7M |
| 5 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
+$48M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
G
Glencore
Baar,
Switzerland
|
-$317M |
| 2 |
SG
Sourcerock Group
Denver,
Colorado
|
-$46.9M |
| 3 |
American Century Companies
Kansas City,
Missouri
|
-$37.2M |
| 4 |
Mirae Asset Global ETFs Holdings
Causeway Bay,
Hong Kong
|
-$34.8M |
| 5 |
UBS AM
Chicago,
Illinois
|
-$32.6M |
CENX Hedge Fund Activity: Q1 2026 in Review
387 of the 8,187 institutional investors tracked by Wall St. Rank reported a position in Century Aluminum (CENX) for Q1 2026, worth a combined $5.92B — up 51% from $3.91B a quarter earlier.
Buyers outnumbered sellers: 108 funds opened new CENX positions and 41 closed out — a net gain of 67 holders — while 129 added to existing stakes and 122 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $133M. The largest seller was Glencore, cutting an estimated $317M.
- 387 institutional investors held Century Aluminum (CENX) as of Q1 2026, up from 325 in Q4 2025.
- Funds reported $5.92B of Century Aluminum stock for Q1 2026, up 51% quarter-over-quarter.
- 108 funds opened new Century Aluminum positions in Q1 2026 and 41 closed out, a net change of +67 holders.
- The largest Century Aluminum buyer in Q1 2026 was Fidelity Investments, an estimated $133M added.
- The largest Century Aluminum seller in Q1 2026 was Glencore, an estimated $317M sold.
Based on aggregated 13F filings for Q1 2026.