Century Aluminum Co: which funds bought and sold
Institutions that bought and sold Century Aluminum shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 254 institutions that filed 13F reports for both quarters added to or opened positions in Century Aluminum, and 169 cut or closed them. Together they added a net 4.7M shares, +4.7% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 214K shares (+1.3%); index fund managers were net buyers of 3.6M shares (+15.3%). 81 opened a new position and 59 sold out entirely.
Bought, Q2 2026 254 institutions, 81 of them new holders Sold, Q2 2026 169 institutions, 59 of them sold out
Net change, all compared +4.7M shares (+4.7%)
Net change, active managers +214K shares (+1.3%), 32 bought, 34 sold
Buyers versus sellers
254 bought 40 169 sold
Active managers and hedge funds 32 bought · 34 sold · +214K
Index fund managers 10 bought · 1 sold · +3.6M
Other institutions 212 bought · 134 sold · +863K
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Blackrock, Inc. Index funds | +1.3M +14.4% | 10.3M | $474M |
| Assenagon Asset Management S.A. | +1.2M +67.3% | 3.1M | $141M |
| State Street Corp Index funds | +875K +18.8% | 5.5M | $255M |
| Fisher Asset Management, LLC Active manager | +683K +80.2% | 1.5M | $70.6M |
| Goldman Sachs Group Inc | +670K +176.7% | 1.0M | $48.3M |
| Balyasny Asset Management L.P. Hedge fund | +665K +699.0% | 760K | $34.9M |
| Woodline Partners LP Hedge fund | +627K New position | 627K | $28.8M |
| First Eagle Investment Management, LLC Active manager | +562K +344.4% | 725K | $33.3M |
| Boston Partners Active manager | +544K +175.6% | 854K | $39.3M |
| Vanguard Portfolio Management LLC Index funds | +532K +12.5% | 4.8M | $220M |
| Driehaus Capital Management LLC Active manager | +456K New position | 456K | $21M |
| Massachusetts Financial Services Co Active manager | +444K +3550.8% | 456K | $22.3M |
| Capital World Investors Active manager | +391K New position | 391K | $18M |
| Vanguard Capital Management LLC Index funds | +386K +14.9% | 3.0M | $137M |
| Invesco Ltd. | +341K +16.4% | 2.4M | $111M |
| Canada Pension Plan Investment Board | +337K +1182.1% | 365K | $16.8M |
| Geode Capital Management, LLC Index funds | +307K +19.9% | 1.8M | $85M |
| UBS Group AG | +280K +47.7% | 867K | $39.9M |
| Squarepoint Ops LLC Hedge fund | +269K +65.6% | 679K | $31.3M |
| Allspring Global Investments Holdings, LLC | +265K +47.2% | 827K | $35.6M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Fisher Asset Management, LLC Active manager | +683K +80.2% | 1.5M | $70.6M |
| Balyasny Asset Management L.P. Hedge fund | +665K +699.0% | 760K | $34.9M |
| Woodline Partners LP Hedge fund | +627K New position | 627K | $28.8M |
| First Eagle Investment Management, LLC Active manager | +562K +344.4% | 725K | $33.3M |
| Boston Partners Active manager | +544K +175.6% | 854K | $39.3M |
| Driehaus Capital Management LLC Active manager | +456K New position | 456K | $21M |
| Massachusetts Financial Services Co Active manager | +444K +3550.8% | 456K | $22.3M |
| Capital World Investors Active manager | +391K New position | 391K | $18M |
| Squarepoint Ops LLC Hedge fund | +269K +65.6% | 679K | $31.3M |
| Qube Research & Technologies Ltd Hedge fund | +258K +43.7% | 847K | $39M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Jane Street Group, LLC | −1.2M −93.8% | 82K | $3.8M |
| Citadel Advisors LLC Hedge fund | −1.0M −78.0% | 290K | $13.3M |
| Millennium Management LLC Hedge fund | −871K −43.8% | 1.1M | $51.4M |
| FMR LLC Active manager | −700K −26.3% | 2.0M | $90.2M |
| Encompass Capital Advisors LLC | −651K −42.0% | 900K | $41.4M |
| D. E. Shaw & Co., Inc. Hedge fund | −638K −44.5% | 796K | $36.6M |
| Bornite Capital Management LP | −542K Sold out | 0 | — |
| Sourcerock Group LLC | −421K −15.7% | 2.3M | $104M |
| Westend Capital Management, LLC | −378K −100.0% | 2 | $92 |
| Deutsche Bank Ag\ | −334K −55.9% | 264K | $12.1M |
| Voloridge Investment Management, LLC Hedge fund | −328K −45.5% | 393K | $18.1M |
| Tudor Investment Corp Et Al Hedge fund | −279K Sold out | 0 | — |
| Point72 Asset Management, L.P. Hedge fund | −275K −48.3% | 295K | $13.6M |
| Wealth High Governance Asset Management Ltda. | −259K Sold out | 0 | — |
| Bridgewater Associates, LP Hedge fund | −259K −35.3% | 474K | $21.8M |
| Engineers Gate Manager LP Hedge fund | −252K −84.6% | 46K | $2.1M |
| American Century Companies Inc Active manager | −232K Sold out | 0 | — |
| HRT Financial LP | −196K Sold out | 0 | — |
| Jpmorgan Chase & Co | −169K −32.8% | 347K | $16.3M |
| Picton Mahoney Asset Management | −169K −57.4% | 126K | $5.8M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Citadel Advisors LLC Hedge fund | −1.0M −78.0% | 290K | $13.3M |
| Millennium Management LLC Hedge fund | −871K −43.8% | 1.1M | $51.4M |
| FMR LLC Active manager | −700K −26.3% | 2.0M | $90.2M |
| D. E. Shaw & Co., Inc. Hedge fund | −638K −44.5% | 796K | $36.6M |
| Voloridge Investment Management, LLC Hedge fund | −328K −45.5% | 393K | $18.1M |
| Tudor Investment Corp Et Al Hedge fund | −279K Sold out | 0 | — |
| Point72 Asset Management, L.P. Hedge fund | −275K −48.3% | 295K | $13.6M |
| Bridgewater Associates, LP Hedge fund | −259K −35.3% | 474K | $21.8M |
| Engineers Gate Manager LP Hedge fund | −252K −84.6% | 46K | $2.1M |
| American Century Companies Inc Active manager | −232K Sold out | 0 | — |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Woodline Partners LPHedge fund | 627K | $28.8M |
| Driehaus Capital Management LLCActive manager | 456K | $21M |
| Capital World InvestorsActive manager | 391K | $18M |
| Van Eck Associates Corp | 89K | $4.1M |
| Man Group PLCHedge fund | 61K | $2.8M |
| Regal Partners Ltd | 57K | $2.6M |
| Universal- Beteiligungs- Und Servicegesellschaft Mbh | 55K | $2.5M |
| Walleye Trading LLC | 47K | $2.2M |
| Blue Jean Financial LLC | 43K | $2M |
| Convergence Investment Partners, LLC | 40K | $1.9M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Bornite Capital Management LP | 542K | $31.8M |
| Tudor Investment Corp Et AlHedge fund | 279K | $16.4M |
| Wealth High Governance Asset Management Ltda. | 259K | $15.2M |
| American Century Companies IncActive manager | 232K | $13.6M |
| HRT Financial LP | 196K | $11.5M |
| Burkehill Global Management, LPHedge fund | 150K | $8.8M |
| Wealth High Governance Capital Ltda | 141K | $8.2M |
| Portolan Capital Management, LLC | 95K | $5.6M |
| Informed Momentum Co LLC | 86K | $5M |
| Moore Capital Management, LPHedge fund | 83K | $4.9M |
Who holds the shares
- Institutions reporting
- 410
- Ten largest holders
- 61.5% of 13F-reported shares
- Index fund managers
- 25.8% of 13F-reported shares
- Active managers and hedge funds
- 15.6% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 32 | 34 | 7 | 12 | +214K | +1.3% |
| Index fund managers | 10 | 1 | 0 | 0 | +3.6M | +15.3% |
| Other institutions | 212 | 134 | 74 | 47 | +863K | +1.4% |