Century Aluminum
CENX
415 hedge funds and large institutions have $4.79B invested in Century Aluminum in 2026 Q2 according to their latest regulatory filings, with 91 funds opening new positions, 173 increasing their positions, 111 reducing their positions, and 59 closing their positions.
218% more call options, than puts
Call options by funds: $149M | Put options by funds: $46.6M
56% more repeat investments, than reductions
Existing positions increased: 173 | Existing positions reduced: 111
54% more first-time investments, than exits
New positions opened: 91 | Existing positions closed: 59
7% more funds holding
Funds holding: 387 → 415 (+28)
3.15% more ownership
Funds ownership: 102.02% → 105.16% (+3.1%)
19% less capital invested
Capital invested by funds: $5.92B → $4.79B (-$1.13B)
46% less funds holding in top 10
Funds holding in top 10: 13 → 7 (-6)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$77.9M |
| 2 |
State Street
Boston,
Massachusetts
|
+$52.7M |
| 3 |
Fisher Asset Management
Camas,
Washington
|
+$41.1M |
| 4 |
Goldman Sachs
New York
|
+$40.3M |
| 5 |
Balyasny Asset Management
Chicago,
Illinois
|
+$40M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
-$74.6M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$62M |
| 3 |
Millennium Management
New York
|
-$52.4M |
| 4 |
Fidelity Investments
Boston,
Massachusetts
|
-$42.1M |
| 5 |
ECA
Encompass Capital Advisors
New York
|
-$39.2M |
CENX Hedge Fund Activity: Q2 2026 in Review
415 of the 8,349 institutional investors tracked by Wall St. Rank reported a position in Century Aluminum (CENX) for Q2 2026, worth a combined $4.79B — down 19% from $5.92B a quarter earlier.
Buyers outnumbered sellers: 91 funds opened new CENX positions and 59 closed out — a net gain of 32 holders — while 173 added to existing stakes and 111 trimmed.
The largest buyer was BlackRock, adding an estimated $77.9M. The largest seller was Jane Street, cutting an estimated $74.6M.
- 415 institutional investors held Century Aluminum (CENX) as of Q2 2026, up from 387 in Q1 2026.
- Funds reported $4.79B of Century Aluminum stock for Q2 2026, down 19% quarter-over-quarter.
- 91 funds opened new Century Aluminum positions in Q2 2026 and 59 closed out, a net change of +32 holders.
- The largest Century Aluminum buyer in Q2 2026 was BlackRock, an estimated $77.9M added.
- The largest Century Aluminum seller in Q2 2026 was Jane Street, an estimated $74.6M sold.
Based on aggregated 13F filings for Q2 2026.