Century Aluminum Co
CENX- Exchange
- Nasdaq
- Industry
- Primary Production of Aluminum
- SEC CIK
- 0000949157
No open-market purchases or sales by Century Aluminum Co insiders were filed in the last 90 days; 416 institutions reported holding it in 13F filings for Q2 2026, worth $5.04B in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +33 vs. previous quarter
- 416
- 13F valueReported value at the end of Q2 2026
- $5.04B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding CENX, Q2 2026
No superinvestor reported holding CENX at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Century Aluminum Co insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 27, 2026 (view filing) | Mar 25 | 2 days | Trpkovski Peter AEVP, CFO | SSale | −16.7K | $50.51 | −$845.5K | −20.7%64.1K after | |
| Mar 17, 2026 (view filing) | Mar 16 | 1 day | Gary Jesse EPresident and CEO | SSale | −150.0K | $55.47 | −$8.32M | −51.3%142.6K after | 10b5-1 |
| Mar 13, 2026 (view filing) | Mar 12 | 1 day | Calloway Kenneth LSVP, Human Resources | SSale | −18.0K | $58.00 | −$1.04M | −42.0%24.9K after | |
| Mar 13, 2026 (view filing) | Mar 11 | 2 days | Hoffman Robert FSVP, IT and CAO | SSale | −10.5K | $56.51 | −$595.0K | −15.7%56.6K after | |
| Mar 6, 2026 (view filing) | Mar 4 | 2 days | Hoffman Robert FSVP, IT and CAO | SSale | −10.0K | $56.33 | −$563.3K | −13.0%67.2K after | |
| Mar 4, 2026 (view filing)4:53 PM ET | Mar 4 | Same day | Glencore International AG and 2 others10% Owner | SSale | −6.32M | $51.75 | −$326.8M | −34.1%12.2M after | |
| Mar 4, 2026 (view filing) | Mar 2-3 | 2 days | Aboud MattSVP, Strategy & Business Dev't | SSale | −15.1K | $52.53 | −$793.1K | −18.9%64.8K after | 2 lots |
| Mar 3, 2026 (view filing) | Feb 27 | 4 days | Hafberg Agust FSVP & Chief Commercial Officer | SSale | −22.9K | $51.24 | −$1.17M | −33.7%45.1K after | |
| Feb 27, 2026 (view filing) | Feb 25 | 2 days | Gudlaugsson GunnarEVP - Global Operations | SSale | −43.0K | $54.10 | −$2.33M | −24.0%136.4K after | |
| Feb 25, 2026 (view filing) | Feb 23 | 2 days | DeZee JohnEVP, GC and Secretary | SSale | −66.0K | $50.72 | −$3.35M | −40.3%97.6K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in Century Aluminum Co at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Glencore plc | 29,690,702 | $1.37B | 28.07% | 00.0% | Unchanged |
| BlackRock, Inc. | 10,304,905 | $474.1M | 0.01% | +1,294,526+14.4% | Added |
| State Street Corp | 5,542,720 | $255.0M | 0.01% | +875,180+18.8% | Added |
| Vanguard Portfolio Management LLC | 4,773,720 | $219.6M | 0.01% | +532,163+12.5% | Added |
| Banque Cantonale Vaudoise | 3,612 | $166.0M | 0.02% | +3,612 | New |
| Assenagon Asset Management S.A. | 3,062,334 | $140.9M | 0.09% | +1,232,010+67.3% | Added |
| Vanguard Capital Management LLC | 2,972,532 | $136.8M | 0.00% | +386,425+14.9% | Added |
| Invesco Ltd. | 2,417,794 | $111.2M | 0.01% | +341,266+16.4% | Added |
| Sourcerock Group LLC | 2,266,085 | $104.3M | 5.42% | −421,164−15.7% | Reduced |
| Dimensional Fund Advisors LP | 2,211,502 | $101.8M | 0.02% | +20,580+0.9% | Added |