Security Snapshot

CENTURY ALUMINUM CO - Common Stock (CENX) Institutional Ownership

CUSIP: 156431108

13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

323

Shares (Excl. Options)

99,819,467

Price

$39.18

Save this security page for your next review

Keep this CUSIP in your watchlists so you can revisit quarter changes from one place.

Create free account to save this page Review latest holder period
Type / Class
Equity / Common Stock
Symbol
CENX on Nasdaq
Shares outstanding
99,002,007
Price per share
$58.69
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
99,819,467
Total reported value
$3,911,982,695
% of total 13F portfolios
0.01%
Share change
+2,958,400
Value change
+$124,163,883
Number of holders
323
Price from insider filings
$58.69
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Sponsored

Quick Takeaways

  • CENX - CENTURY ALUMINUM CO - Common Stock is tracked under CUSIP 156431108.
  • 323 institutions reported positions in Q4 2025.
  • 2 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 323 to 28 between Q4 2025 and Q1 2026.
  • Reported value moved from $3,911,982,695 to $50,941,810.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 323 institutions filings for Q4 2025.

Open SEC Evidence

Investment Quick Answers

What is CUSIP 156431108?
CUSIP 156431108 identifies CENX - CENTURY ALUMINUM CO - Common Stock in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of CENTURY ALUMINUM CO - Common Stock (CENX) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
GLENCORE INTERNATIONAL AG 30% -18% $1,499,677,358 -$318,983,025 29,690,702 -18% Glencore International AG 04 Mar 2026
BlackRock, Inc. 9.2% $146,947,627 8,518,703 BlackRock, Inc. 31 Mar 2025

As of 31 Dec 2025, 323 institutional investors reported holding 99,819,467 shares of CENTURY ALUMINUM CO - Common Stock (CENX). This represents 101% of the company’s total 99,002,007 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of CENTURY ALUMINUM CO - Common Stock (CENX) together control 82% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Glencore plc 36% 36,005,947 -10% 33% $1,410,713,003
BlackRock, Inc. 9.6% 9,484,567 -6.4% 0.01% $371,605,334
VANGUARD GROUP INC 7% 6,939,794 +19% 0% $271,901,129
STATE STREET CORP 4.3% 4,295,711 +1.8% 0.01% $168,305,957
Sourcerock Group LLC 3.7% 3,621,984 +37% 8.1% $141,909,333
DIMENSIONAL FUND ADVISORS LP 2.8% 2,765,132 -9.7% 0.02% $108,340,758
MORGAN STANLEY 1.6% 1,609,093 +12% 0% $63,044,358
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 1.5% 1,493,823 +2.5% 0.09% $58,529,407
MILLENNIUM MANAGEMENT LLC 1.4% 1,418,032 +220% 0.04% $55,558,494
GEODE CAPITAL MANAGEMENT, LLC 1.3% 1,318,503 -0.04% 0% $51,666,602
D. E. Shaw & Co., Inc. 1.2% 1,190,937 +491% 0.04% $46,660,911
UBS Group AG 1.1% 1,111,273 +134% 0.01% $43,539,676
AMERICAN CENTURY COMPANIES INC 0.98% 974,241 +27% 0.02% $38,170,763
VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.95% 940,325 +18% 0.13% $36,841,934
Assenagon Asset Management S.A. 0.88% 872,753 +114% 0.05% $34,194,463
Fisher Asset Management, LLC 0.88% 866,944 -10% 0.01% $33,966,865
Impala Asset Management LLC 0.87% 857,805 +24% 21% $33,608,800
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.75% 747,087 -13% 0.01% $29,270,868
Qube Research & Technologies Ltd 0.73% 726,192 -12% 0.04% $28,452,203
CITADEL ADVISORS LLC 0.7% 697,217 -54% 0.02% $27,316,962
GOLDMAN SACHS GROUP INC 0.67% 665,702 +21% 0% $26,082,204
Invesco Ltd. 0.64% 629,412 -26% 0% $24,660,362
Mountaineer Partners Management, LLC 0.61% 608,475 -8% 13% $23,840,050
Boston Partners 0.61% 600,237 -47% 0.02% $23,523,006
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.54% 535,924 -1.2% 0% $20,997,502

Institutional Holders of CENTURY ALUMINUM CO - Common Stock (CENX) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 867,861 $50,941,810 +$3,077,141 $58.69 28
2025 Q4 99,819,467 $3,911,982,695 +$124,163,883 $39.18 323
2025 Q3 96,520,734 $2,832,919,432 +$54,258,975 $29.36 255
2025 Q2 95,594,768 $1,722,575,922 +$58,549,617 $18.02 221
2025 Q1 92,511,819 $1,716,528,646 -$3,114,737 $18.56 217
2024 Q4 92,433,106 $1,684,095,771 -$45,584,471 $18.22 222
2024 Q3 54,982,920 $892,385,432 -$17,861,815 $16.23 197
2024 Q2 55,165,067 $924,028,152 +$5,083,622 $16.75 189
2024 Q1 53,186,853 $818,595,289 -$54,547,870 $15.39 178
2023 Q4 57,092,682 $693,185,877 +$56,762,207 $12.14 165
2023 Q3 52,595,437 $378,191,182 +$17,142,405 $7.19 159
2023 Q2 50,261,595 $438,460,841 -$16,970,556 $8.72 157
2023 Q1 51,654,253 $516,526,137 +$5,811,062 $10.00 163
2022 Q4 51,744,904 $423,304,619 +$16,034,550 $8.18 160
2022 Q3 50,143,413 $264,759,854 -$33,619,343 $5.28 156
2022 Q2 56,463,368 $415,838,293 -$64,301,856 $7.37 162
2022 Q1 52,648,683 $1,385,786,059 +$18,694,939 $26.31 186
2021 Q4 50,838,654 $840,301,415 +$20,000,920 $16.56 156
2021 Q3 50,174,754 $674,836,148 -$25,939,252 $13.45 142
2021 Q2 52,238,880 $673,252,200 +$61,029,565 $12.89 141
2021 Q1 46,669,039 $823,272,221 +$16,544,644 $17.66 136
2020 Q4 46,583,401 $513,831,108 -$5,554,984 $11.03 127
2020 Q3 48,246,723 $343,504,916 +$18,698,921 $7.12 123
2020 Q2 45,432,752 $323,934,353 +$1,534,348 $7.13 111
2020 Q1 46,359,225 $167,793,339 -$17,604,120 $3.62 122
2019 Q4 49,723,997 $373,606,891 +$20,107,244 $7.51 132
2019 Q3 47,024,855 $311,971,810 -$7,402,964 $6.64 133
2019 Q2 48,135,626 $332,614,941 +$5,598,502 $6.91 137
2019 Q1 47,471,867 $421,525,789 -$15,020,761 $8.88 141
2018 Q4 49,277,003 $360,240,558 -$17,835,973 $7.31 144
2018 Q3 50,459,999 $603,866,284 -$8,002,547 $11.97 150
2018 Q2 49,355,573 $777,276,169 -$32,208,706 $15.75 150
2018 Q1 51,523,832 $852,286,389 -$101,838,614 $16.54 158
2017 Q4 57,075,678 $1,121,161,668 -$33,600,756 $19.64 145
2017 Q3 59,370,206 $984,649,332 +$13,129,672 $16.58 158
2017 Q2 58,696,246 $914,603,288 +$18,621,099 $15.58 150
2017 Q1 58,056,533 $736,803,172 +$107,898,600 $12.69 143
2016 Q4 55,989,364 $480,453,721 +$46,404,879 $8.56 145
2016 Q3 51,001,816 $354,255,220 +$16,458,457 $6.95 134
2016 Q2 48,855,195 $309,286,894 -$1,927,294 $6.33 145
2016 Q1 48,978,483 $345,311,292 -$2,292,504 $7.05 146
2015 Q4 52,801,237 $233,407,962 -$35,637,931 $4.42 142
2015 Q3 58,971,650 $271,162,133 -$44,054,832 $4.60 150
2015 Q2 62,453,868 $651,408,454 +$44,932,394 $10.43 186
2015 Q1 56,626,297 $781,437,031 +$40,873,055 $13.80 180
2014 Q4 52,181,916 $1,273,043,279 +$31,303,929 $24.40 191
2014 Q3 50,804,708 $1,319,280,118 +$48,354,084 $25.97 186
2014 Q2 49,542,974 $776,804,823 +$25,470,586 $15.68 138
2014 Q1 47,311,000 $624,889,932 +$22,609,882 $13.21 119

Sponsored