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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 $4.79B in total; no superinvestor holds it.

13F holders, Q2 2026

Institutional positions in Century Aluminum Co as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
416
+33 vs. Q1 2026
Shares held
104.1M
+3.15M (+3.1%) vs. Q1 2026
Total value
$4.79B
−$1.13B (−19.1%) vs. Q1 2026
New holders
92
173 more added
Sold out
59
111 more reduced

4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CENX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2026: 416 institutions
Q1 2021: 139 institutionsQ2 2021: 146 institutionsQ3 2021: 148 institutionsQ4 2021: 164 institutionsQ1 2022: 190 institutionsQ2 2022: 172 institutionsQ3 2022: 176 institutionsQ4 2022: 169 institutionsQ1 2023: 168 institutionsQ2 2023: 160 institutionsQ3 2023: 162 institutionsQ4 2023: 171 institutionsQ1 2024: 180 institutionsQ2 2024: 191 institutionsQ3 2024: 197 institutionsQ4 2024: 222 institutionsQ1 2025: 218 institutionsQ2 2025: 222 institutionsQ3 2025: 255 institutionsQ4 2025: 326 institutionsQ1 2026: 387 institutionsQ2 2026: 416 institutions
Value heldQ2 2026: $4.79B
Q1 2021: $823.3MQ2 2021: $673.3MQ3 2021: $674.8MQ4 2021: $844.8MQ1 2022: $1.39BQ2 2022: $415.9MQ3 2022: $269.4MQ4 2022: $423.5MQ1 2023: $518.2MQ2 2023: $438.5MQ3 2023: $378.2MQ4 2023: $693.3MQ1 2024: $829.8MQ2 2024: $923.2MQ3 2024: $892.4MQ4 2024: $1.68BQ1 2025: $1.72BQ2 2025: $1.72BQ3 2025: $2.83BQ4 2025: $3.92BQ1 2026: $5.92BQ2 2026: $4.79B
Institutions holding CENX and their total value by quarter
QuarterHoldersValue
Q2 2026416$4.79B
Q1 2026387$5.92B
Q4 2025326$3.92B
Q3 2025255$2.83B
Q2 2025222$1.72B
Q1 2025218$1.72B
Q4 2024222$1.68B
Q3 2024197$892.4M
Q2 2024191$923.2M
Q1 2024180$829.8M
Q4 2023171$693.3M
Q3 2023162$378.2M
Q2 2023160$438.5M
Q1 2023168$518.2M
Q4 2022169$423.5M
Q3 2022176$269.4M
Q2 2022172$415.9M
Q1 2022190$1.39B
Q4 2021164$844.8M
Q3 2021148$674.8M
Q2 2021146$673.3M
Q1 2021139$823.3M

Institutions, Q2 2026

Shares, value and share of portfolio for each institution holding Century Aluminum Co; share changes are against Q1 2026.

Institutions holding CENX in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
CoreCap Advisors, LLC1,855$85.3K0.00%+468+33.7%Added
Nykredit A/S1,836$84.5K0.00%+1,836New
Erste Asset Management GmbH1,637$75.3K0.00%00.0%Unchanged
Signaturefd, LLC1,545$71.1K0.00%+3+0.2%Added
Hantz Financial Services, Inc.1,527$70.0K0.00%+72+4.9%Added
Covestor Ltd1,398$64.0K0.04%+92+7.0%Added
Meeder Asset Management Inc1,366$62.9K0.00%−847−38.3%Reduced
USA Financial Formulas1,360$62.6K0.01%+1,360New
Farther Finance Advisors, LLC1,307$60.6K0.00%+17+1.3%Added
Pinnacle Wealth Planning Services, Inc.1,223$56.3K0.01%−11−0.9%Reduced
Ronald Blue Trust, Inc.1,199$55.2K0.00%+1,199New
SRS Capital Advisors, Inc.971$44.7K0.00%+606+166.0%Added
Huntington National Bank907$41.7K0.00%+107+13.4%Added
Signature Equity Partners, LLC903$41.5K0.02%−360−28.5%Reduced
Harbour Investments, Inc.817$37.6K0.00%00.0%Unchanged
Larson Financial Group LLC804$37.0K0.00%−65−7.5%Reduced
Northwestern Mutual Wealth Management Co800$36.8K0.00%−165−17.1%Reduced
BI Asset Management Fondsmaeglerselskab A/S741$34.0K0.00%+741New
Assetmark, Inc735$33.8K0.00%−103−12.3%Reduced
Custom Index Systems, LLC692$31.8K0.01%+692New
Index Technologies Group LLC590$27.1K0.02%+590New
Optiver Holding B.V.579$26.6K0.00%+579New
Synergy Investment Management, LLC596$25.4K0.01%+596New
Versant Capital Management, Inc508$23.4K0.00%−4−0.8%Reduced
Kemnay Advisory Services Inc.484$22.3K0.00%+14+3.0%Added
Eurizon Capital SGR S.p.A.474$22.1K0.00%+474New
Grove Bank & Trust457$21.0K0.00%00.0%Unchanged
Private Trust Co NA431$19.8K0.00%−39−8.3%Reduced
US Bancorp425$19.6K0.00%−36−7.8%Reduced
Carolina Wealth Advisors, LLC424$19.5K0.01%+181+74.5%Added
Salomon & Ludwin, LLC453$19.5K0.00%−207−31.4%Reduced
Hollencrest Capital Management400$18.4K0.00%−100−20.0%Reduced
Umb Bank N A353$16.2K0.00%+16+4.7%Added
NBC Securities, Inc.330$15.2K0.00%−19−5.4%Reduced
Allworth Financial LP323$14.9K0.00%−8−2.4%Reduced
Whittier Trust Co of Nevada Inc310$14.0K0.00%00.0%Unchanged
Costello Asset Management, INC300$13.8K0.00%+300New
Bayforest Capital Ltd297$13.7K0.01%+297New
Smartleaf Asset Management LLC278$12.9K0.00%00.0%Unchanged
Financial Consulate, Inc250$11.5K0.00%00.0%Unchanged
Sterling Capital Management LLC246$11.3K0.00%−123−33.3%Reduced
First Horizon Corp232$10.7K0.00%00.0%Unchanged
Macquarie Group Ltd231$10.6K0.00%+231New
WPG Advisers, LLC230$10.6K0.01%00.0%Unchanged
Fortitude Family Office, LLC208$9.57K0.00%+5+2.5%Added
SBI Securities Co., Ltd.202$9.29K0.00%+33+19.5%Added
Parallel Advisors, LLC174$8.01K0.00%00.0%Unchanged
Continuum Advisory, LLC170$7.82K0.00%+170New
Federation des caisses Desjardins du Quebec168$7.73K0.00%+168New
Harbor Capital Advisors, Inc.148$7.00K0.00%−11−6.9%Reduced
UMA Financial Services, Inc.151$6.95K0.00%00.0%Unchanged
Rothschild Investment LLC149$6.86K0.00%+6+4.2%Added
Public Employees Retirement System of Ohio146$6.72K0.00%+71+94.7%Added
EverSource Wealth Advisors, LLC133$6.12K0.00%−1,286−90.6%Reduced
Group One Trading, L.P.133$6.12K0.00%+133New
Quarry LP131$6.03K0.00%+120+1,090.9%Added
Kilter Group LLC123$5.66K0.00%−7−5.4%Reduced
Financially Speaking Inc93$5.46K0.03%00.0%Unchanged
Sachetta, LLC117$5.38K0.00%+117New
Capital Advisors, Ltd. LLC107$5.00K0.00%00.0%Unchanged
Parkside Financial Bank & Trust107$4.92K0.00%+2+1.9%Added
Keating Financial Advisory Services, Inc.107$4.92K0.00%+3+2.9%Added
Action Point Financial Planning, LLC107$4.88K0.00%+107New
Silver Grove Financial Group, Inc.105$4.83K0.00%+105New
Steward Partners Investment Advisory, LLC100$4.60K0.00%00.0%Unchanged
Cassaday & Co Wealth Management LLC93$4.28K0.00%−93−50.0%Reduced
Bare Financial Services, Inc83$3.82K0.00%+6+7.8%Added
Hurley Capital, LLC76$3.50K0.00%+76New
Colonial Trust Co69$3.22K0.00%+3+4.5%Added
CX Institutional62$3.00K0.00%00.0%Unchanged
Massmutual Trust Co FSB65$2.99K0.00%−12−15.6%Reduced
Spectrum Wealth Advisory Group, LLC55$2.53K0.00%+55New
Golden State Wealth Management, LLC50$2.30K0.00%00.0%Unchanged
Aventura Private Wealth, LLC50$2.30K0.00%+50New
Cullen/Frost Bankers, Inc.48$2.21K0.00%00.0%Unchanged
Farmers & Merchants Investments Inc33$1.52K0.00%00.0%Unchanged
JPL Wealth Management, LLC32$1.47K0.00%00.0%Unchanged
JFS Wealth Advisors, LLC31$1.43K0.00%+8+34.8%Added
CVA Family Office, LLC31$1.43K0.00%+13+72.2%Added
Essential Partners LLC29$1.33K0.00%+7+31.8%Added
Rakuten Securities, Inc.27$1.24K0.00%+27New
IFP Advisors, Inc26$1.20K0.00%−826−96.9%Reduced
Valued Wealth Advisors LLC22$1.01K0.00%−26−54.2%Reduced
C M Bidwell & Associates Ltd21$9660.00%00.0%Unchanged
Decker Retirement Planning Inc.16$7360.00%00.0%Unchanged
Rialto Wealth Management, LLC14$6450.00%+12+600.0%Added
Clearstead Advisors, LLC13$5990.00%+13New
Wealth Enhancement Trust Services, Inc.13$5980.00%+13New
True Wealth Design, LLC12$5530.00%+5+71.4%Added
Cedar Mountain Advisors, LLC10$4600.00%00.0%Unchanged
Basecamp Wealth Advisors LLC10$4600.00%00.0%Unchanged
Tradewinds Capital Management, LLC9$4150.00%+7+350.0%Added
Plante Moran Financial Advisors, LLC9$4140.00%+9New
Creative Capital Management Investments LLC9$4140.00%+9New
Gilpin Wealth Management, LLC8$3690.00%−1−11.1%Reduced
SJS Investment Consulting Inc.8$3690.00%+1+14.3%Added
Godfrey Financial Associates, Inc.8$3680.00%00.0%Unchanged
Breakwater Investment Management7$3230.00%+7New
Stone House Investment Management, LLC7$3220.00%−16−69.6%Reduced
HFM Investment Advisors, LLC6$2770.00%+2+50.0%Added