Century Aluminum Ownership | Who Owns Century Aluminum?
Century Aluminum Ownership Summary
Century Aluminum is owned by 105.59% institutional investors, 30.89% insiders. Glencore is the largest institutional shareholder, holding 29.99% of CENX shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 3.47% of its assets in Century Aluminum shares.
CENX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Century Aluminum | 105.59% | 30.89% | -36.48% |
| Sector | Basic Materials Stocks | 58.79% | 12.49% | 28.73% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Glencore | 29.69M | 29.99% | $1.37B |
| Blackrock | 9.80M | 10.57% | $164.13M |
| Blackrock funding, inc. /de | 10.30M | 10.41% | $474.13M |
| Vanguard group | 6.94M | 7.44% | $271.90M |
| State street | 5.54M | 5.60% | $255.02M |
| Vanguard capital management | 2.97M | 3.00% | $136.77M |
| Invesco | 2.42M | 2.44% | $111.24M |
| Sourcerock group | 2.27M | 2.29% | $104.26M |
| Dimensional fund advisors lp | 2.21M | 2.23% | $101.76M |
| Fmr | 1.96M | 1.98% | $90.20M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Glencore | 29.69M | 28.07% | $1.37B |
| Impala asset management | 975.00K | 26.66% | $57.22M |
| Mountaineer partners management | 503.31K | 17.54% | $23.16M |
| Sourcerock group | 2.27M | 5.42% | $104.26M |
| Steamboat capital partners | 296.67K | 2.92% | $13.65M |
| Aldebaran capital | 51.99K | 1.80% | $2.39M |
| Orion resource partners lp | 83.77K | 1.76% | $3.85M |
| New century financial group | 33.62K | 1.75% | $987.17K |
| Encompass capital advisors | 900.00K | 1.47% | $41.41M |
| Drummond knight asset management pty | 162.27K | 1.37% | $7.47M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock funding, inc. /de | 10.30M | 0.01% | 1.29M |
| Vanguard group | 6.94M | 0.00% | 1.09M |
| State street | 5.54M | 0.01% | 875.18K |
| Fisher asset management | 1.53M | 0.02% | 683.10K |
| Goldman sachs group | 1.05M | 0.00% | 670.13K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Castle hook partners lp | - | - | -1.51M |
| Jane street group | 81.56K | 0.00% | -1.24M |
| Mirae asset global investments | - | - | -1.18M |
| Citadel advisors | 290.03K | 0.00% | -1.03M |
| Millennium management | 1.12M | 0.02% | -871.41K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Sixth street partners management company | 594.93K | 0.00% | 594.93K | $27.37M |
| Driehaus capital management | 455.98K | 0.12% | 455.98K | $20.98M |
| Capital world investors | 391.42K | 0.00% | 391.42K | $18.01M |
| Weiss asset management lp | 269.88K | 0.13% | 269.88K | $12.42M |
| Invenomic capital management lp | 155.27K | 0.22% | 155.27K | $4.56M |
Sold Out
| Holder | Change |
|---|---|
| Curio wealth | -1.00 |
| Flagship harbor advisors | -7.00 |
| Vermillion wealth management | -7.00 |
| Mendota financial group | -7.00 |
| Stephens consulting | -20.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2026 | 436 | 7.13% | 104,535,198 | 3.55% | 105 | 0.92% | 260 | 9.70% | 113 | -10.32% |
| 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% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.43M | 3.47% | -3.69K |
| Stt Strt®SPDR®S&P®Mtls &MngETF | 2.90M | 2.93% | -11.44K |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.21M | 2.23% | 7.31K |
| Vanguard Total Stock Mkt Idx Inv | 2.20M | 2.22% | 303.74K |
| Vanguard Morn Total Stk Mkt Idx Investor | 2.20M | 2.22% | 303.74K |
| iShares Russell 2000 ETF | 1.77M | 1.79% | -31.49K |
| 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 | 1.59M | 1.61% | 3.27K |
| Invesco OFI Small Cap Growth | 1.39M | 1.40% | 234.42K |
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 Q2 | - | - |
| 2026 Q1 | - | 12 |
| 2025 Q4 | - | 1 |
| 2025 Q3 | - | 3 |
| 2025 Q2 | - | - |
CENX Ownership FAQ
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