Century Aluminum Ownership | Who Owns Century Aluminum?
Century Aluminum Ownership Summary
Century Aluminum is owned by 51.80% institutional investors, 30.90% insiders, and 17.30% retail investors. Glencore is the largest institutional shareholder, holding 31.52% of CENX shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 3.29% of its assets in Century Aluminum shares.
CENX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Century Aluminum | 51.80% | 30.90% | 17.30% |
| Sector | Basic Materials Stocks | 41.27% | 13.22% | 45.51% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Glencore | 29.69M | 31.52% | $1.74B |
| Blackrock | 9.80M | 10.57% | $164.13M |
| Blackrock funding, inc. /de | 9.01M | 9.57% | $528.82M |
| Vanguard group | 6.94M | 7.44% | $271.90M |
| State street | 4.67M | 4.95% | $273.94M |
| Sourcerock group | 2.69M | 2.85% | $157.71M |
| Fmr | 2.66M | 2.82% | $156.12M |
| Dimensional fund advisors lp | 2.19M | 2.33% | $128.55M |
| Invesco | 2.08M | 2.20% | $121.87M |
| Millennium management | 1.99M | 2.11% | $116.65M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Glencore | 29.69M | 29.46% | $1.74B |
| Impala asset management | 975.00K | 26.66% | $57.22M |
| Mountaineer partners management | 584.00K | 17.02% | $34.27M |
| Westend capital management | 378.07K | 6.66% | $22.19M |
| Sourcerock group | 2.69M | 6.36% | $157.71M |
| Drummond knight asset management pty | 281.09K | 5.84% | $16.50M |
| Bornite capital management lp | 542.00K | 5.35% | $31.81M |
| Steamboat capital partners | 276.25K | 4.03% | $16.21M |
| Encompass capital advisors | 1.55M | 2.73% | $91.05M |
| Aldebaran capital | 57.57K | 2.58% | $3.38M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 2.66M | 0.01% | 2.65M |
| Invesco | 2.08M | 0.02% | 1.45M |
| Jane street group | 1.32M | 0.01% | 1.28M |
| Vanguard group | 6.94M | 0.00% | 1.09M |
| Encompass capital advisors | 1.55M | 2.73% | 1.05M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Glencore | 29.69M | 29.46% | -6.32M |
| Castle hook partners lp | - | - | -1.51M |
| Mirae asset global investments | - | - | -1.18M |
| Sourcerock group | 2.69M | 6.36% | -934.74K |
| American century companies | 232.03K | 0.01% | -742.21K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Kinetic partners management, lp | 531.70K | 1.75% | 531.70K | $31.21M |
| Merewether investment management, lp | 514.80K | 0.58% | 514.80K | $30.21M |
| Rokos capital management llp | 436.69K | 0.19% | 436.69K | $25.64M |
| Vanguard fiduciary trust | 378.30K | 0.01% | 378.30K | $22.20M |
| Picton mahoney asset management | 295.33K | 0.13% | 295.33K | $17.33M |
Sold Out
| Holder | Change |
|---|---|
| Mendota financial group | -7.00 |
| Flagship harbor advisors | -7.00 |
| Stephens consulting | -20.00 |
| Innealta capital | -26.00 |
| Clearstead trust | -30.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 183 | -47.86% | 48,792,247 | -51.14% | 51 | 0.45% | 100 | -53.27% | 56 | -37.78% |
| Dec 31, 2025 | 229 | -17.63% | 83,087,609 | -13.92% | 89 | 0.83% | 139 | -12.03% | 58 | -24.68% |
| Sep 30, 2025 | 268 | 14.53% | 96,331,369 | 4.53% | 103 | 1.06% | 148 | 11.28% | 76 | 11.76% |
| Jun 30, 2025 | 241 | 4.33% | 95,551,797 | 3.33% | 102 | 1.04% | 134 | 9.84% | 71 | -5.33% |
| Mar 31, 2025 | 230 | -6.12% | 92,448,227 | 0.02% | 99 | 1.00% | 120 | -5.51% | 76 | 11.76% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.26M | 3.29% | 714.00 |
| Stt Strt®SPDR®S&P®Mtls &MngETF | 2.74M | 2.77% | -33.88K |
| Vanguard Total Stock Mkt Idx Inv | 1.89M | 1.91% | 5.21K |
| SPDR® S&P Metals and Mining ETF | 1.65M | 1.77% | -5.92K |
| Vanguard US Total Market Shares ETF | 1.59M | 1.72% | - |
| Vanguard Small Cap Index | 1.37M | 1.38% | -2.48K |
| iShares Russell 2000 ETF | 1.34M | 1.36% | 11.33K |
| Invesco OFI Small Cap Growth | 1.16M | 1.17% | 1.16M |
| Invesco Discovery A | 1.16M | 1.17% | 189.55K |
| Vanguard Small Cap Growth Index Inv | 769.13K | 0.78% | -58.00 |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Mar 25, 2026 | Trpkovski Peter A | EVP, CFO | Sell | $845.49K |
| Mar 16, 2026 | Gary Jesse E | President and CEO | Sell | $8.32M |
| Mar 12, 2026 | Calloway Kenneth L | SVP, Human Resources | Sell | $1.04M |
| Mar 11, 2026 | Hoffman Robert F | SVP, IT and CAO | Sell | $594.99K |
| Mar 04, 2026 | Hoffman Robert F | SVP, IT and CAO | Sell | $563.30K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | 12 |
| 2025 Q4 | - | 1 |
| 2025 Q3 | - | 3 |
| 2025 Q2 | - | - |
| 2025 Q1 | - | 2 |
CENX Ownership FAQ
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