CENTURY ALUMINUM CO (CENX) — Institutional Holders, Q2 2026

423 institutional investment managers reported a CENX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $4.9B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← CENX stock profile

CENX in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

172

Trimmed

110

Sold out

Biggest buyers

BlackRockAdded · +1,294,526 sh+$59.6M
STATE STREETAdded · +875,180 sh+$40.3M
Fisher Asset ManagementAdded · +683,104 sh+$31.4M
GOLDMAN SACHS GROUPAdded · +670,128 sh+$30.8M
BALYASNY ASSET MANAGEMENT L.P.Added · +664,535 sh+$30.6M

Biggest sellers

JANE STREET GROUPTrimmed · -1,239,378 sh-$57.0M
CITADEL ADVISORSTrimmed · -1,030,836 sh-$47.4M
MILLENNIUM MANAGEMENTTrimmed · -871,408 sh-$40.1M
FMRTrimmed · -699,701 sh-$32.2M
Encompass Capital AdvisorsTrimmed · -651,362 sh-$30.0M

CENX 13F holders ranked 1–100 of 423

Institutional investors reporting a position in CENTURY ALUMINUM CO on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	Glencore plc#1 · 29,690,702 sh	29,690,702	$1.4B	—	0.0%
2	BlackRock#2 · 10,304,905 sh	10,304,905	$474.1M	<0.01%	+14.4%
3	STATE STREET#3 · 5,542,720 sh	5,542,720	$255.0M	<0.01%	+18.8%
4	VANGUARD PORTFOLIO MANAGEMENT#4 · 4,773,720 sh	4,773,720	$219.6M	<0.01%	+12.5%
5	VANGUARD CAPITAL MANAGEMENT#5 · 2,972,532 sh	2,972,532	$136.8M	<0.01%	+14.9%
6	Invesco Ltd.#6 · 2,417,794 sh	2,417,794	$111.2M	<0.01%	+16.4%
7	Sourcerock Group#7 · 2,266,085 sh	2,266,085	$104.3M	5.42%	-15.7%
8	DIMENSIONAL FUND ADVISORS#8 · 2,211,502 sh	2,211,502	$101.8M	0.02%	+0.9%
9	FMR#9 · 3,210,353 sh	3,210,353	$93.3M	<0.01%	-17.9%
10	GEODE CAPITAL MANAGEMENT#10 · 1,846,800 sh	1,846,800	$85.0M	<0.01%	+19.9%
11	Fisher Asset Management#11 · 1,534,405 sh	1,534,405	$70.6M	0.02%	+80.2%
12	Assenagon Asset Management S.A.#12 · 1,531,167 sh	1,531,167	$70.4M	—	-16.3%
13	D. E. Shaw#13 · 14,307,738 sh	14,307,738	$70.0M	0.03%	-4.3%
14	MORGAN STANLEY#14 · 1,510,756 sh	1,510,756	$69.5M	<0.01%	-4.7%
15	MILLENNIUM MANAGEMENT#15 · 1,116,217 sh	1,116,217	$51.4M	0.02%	-43.8%
16	GOLDMAN SACHS GROUP#16 · 1,049,276 sh	1,049,276	$48.3M	<0.01%	+176.7%
17	Impala Asset Management#17 · 1,035,000 sh	1,035,000	$47.6M	27.00%	+6.2%
18	Encompass Capital Advisors#18 · 900,000 sh	900,000	$41.4M	1.47%	-42.0%
19	MIRAE ASSET GLOBAL ETFS Ltd.#19 · 870,850 sh	870,850	$40.1M	0.05%	+8.8%
20	UBS Group AG#20 · 866,821 sh	866,821	$39.9M	<0.01%	+47.7%
21	Boston Partners#21 · 854,095 sh	854,095	$39.3M	0.03%	+175.6%
22	Qube Research & Technologies Ltd#22 · 847,459 sh	847,459	$39.0M	0.04%	+43.7%
23	Kinetic Partners Management#23 · 776,700 sh	776,700	$35.7M	0.85%	+46.1%
24	Allspring Global Investments#24 · 827,031 sh	827,031	$35.6M	0.05%	+47.2%
25	BALYASNY ASSET MANAGEMENT L.P.#25 · 759,603 sh	759,603	$34.9M	0.04%	+699.0%
26	Merewether Investment Management#26 · 693,537 sh	693,537	$31.9M	0.60%	+34.7%
27	NORTHERN#27 · 682,075 sh	682,075	$31.4M	<0.01%	+24.3%
28	Squarepoint Ops#28 · 679,205 sh	679,205	$31.3M	0.03%	+65.6%
29	READYSTATE ASSET MANAGEMENT#29 · 12,070,000 sh	12,070,000	$29.8M	0.02%	0.0%
30	Woodline Partners#30 · 626,772 sh	626,772	$28.8M	0.09%	New
31	BANK OF AMERICA#31 · 602,232 sh	602,232	$27.7M	<0.01%	-1.1%
32	CHARLES SCHWAB INVESTMENT MANAGEMENT#32 · 594,927 sh	594,927	$27.4M	<0.01%	+9.3%
33	WELLINGTON MANAGEMENT GROUP LLP#33 · 548,898 sh	548,898	$25.3M	<0.01%	+45.0%
34	BW Gestao de Investimentos Ltda.#34 · 523,162 sh	523,162	$24.1M	0.48%	+69.4%
35	Mountaineer Partners Management#35 · 503,309 sh	503,309	$23.2M	17.54%	-13.8%
36	LEUCADIA NATIONAL#36 · 486,175 sh	486,175	$22.4M	0.15%	+0.4%
37	MASSACHUSETTS FINANCIAL SERVICES#37 · 456,244 sh	456,244	$22.3M	<0.01%	+3550.8%
38	Bridgewater Associates#38 · 473,928 sh	473,928	$21.8M	0.09%	-35.3%
39	BANK OF MONTREAL#39 · 3,978,556 sh	3,978,556	$21.7M	<0.01%	0.0%
40	DRIEHAUS CAPITAL MANAGEMENT#40 · 455,982 sh	455,982	$21.0M	0.12%	New
41	WELLS FARGO & COMPANY#41 · 3,619,149 sh	3,619,149	$19.9M	<0.01%	-17.6%
42	VANGUARD FIDUCIARY#42 · 427,306 sh	427,306	$19.7M	<0.01%	+13.0%
43	Bank of New York Mellon#43 · 403,628 sh	403,628	$18.6M	<0.01%	+20.2%
44	VOLORIDGE INVESTMENT MANAGEMENT#44 · 392,989 sh	392,989	$18.1M	0.08%	-45.5%
45	Capital World Investors#45 · 391,417 sh	391,417	$18.0M	<0.01%	New
46	ABSOLUTE INVESTMENT ADVISERS#46 · 6,938,000 sh	6,938,000	$17.1M	—	+22.8%
47	ROYCE & ASSOCIATES#47 · 372,044 sh	372,044	$17.1M	0.14%	+40.7%
48	CANADA PENSION PLAN INVESTMENT BOARD#48 · 365,400 sh	365,400	$16.8M	<0.01%	+1182.1%
49	First Eagle Investment Management#49 · 362,360 sh	362,360	$16.7M	0.03%	+122.2%
50	Rokos Capital Management LLP#50 · 355,002 sh	355,002	$16.3M	0.06%	-18.7%
51	JPMORGAN CHASE#51 · 347,166 sh	347,166	$16.3M	<0.01%	-32.8%
52	Nuveen#52 · 341,970 sh	341,970	$15.7M	<0.01%	+10.7%
53	HEALTHCARE OF ONTARIO PENSION PLAN FUND#53 · 326,500 sh	326,500	$15.0M	0.02%	+77.4%
54	Steamboat Capital Partners#54 · 296,666 sh	296,666	$13.6M	2.92%	+7.4%
55	Point72 Asset Management, L.P.#55 · 294,555 sh	294,555	$13.6M	0.01%	-48.3%
56	CITADEL ADVISORS#56 · 290,031 sh	290,031	$13.3M	<0.01%	-78.0%
57	PRINCIPAL FINANCIAL GROUP#57 · 276,827 sh	276,827	$12.7M	<0.01%	+6.3%
58	Weiss Asset Management#58 · 269,881 sh	269,881	$12.4M	0.13%	New
59	BNP PARIBAS FINANCIAL MARKETS#59 · 269,169 sh	269,169	$12.4M	<0.01%	+137.7%
60	SILVERBACK ASSET MANAGEMENT#60 · 5,000,000 sh	5,000,000	$12.3M	1.33%	New
61	DEUTSCHE BANK AG\#61 · 263,726 sh	263,726	$12.1M	<0.01%	-55.9%
62	CONGRESS ASSET MANAGEMENT#62 · 255,636 sh	255,636	$11.8M	—	+0.9%
63	SYSTEMATIC FINANCIAL MANAGEMENT#63 · 252,249 sh	252,249	$11.6M	0.23%	+59.9%
64	GREAT WEST LIFE ASSURANCE#64 · 244,346 sh	244,346	$11.2M	0.02%	-11.3%
65	Yaupon Capital Management#65 · 223,861 sh	223,861	$10.3M	0.20%	+6.0%
66	PUBLIC SECTOR PENSION INVESTMENT BOARD#66 · 222,998 sh	222,998	$10.3M	0.03%	-8.6%
67	BARCLAYS PLC#67 · 209,641 sh	209,641	$9.6M	<0.01%	+46.3%
68	FIRST ADVISORS#68 · 201,727 sh	201,727	$9.3M	<0.01%	+207.2%
69	Nicholas Investment Partners#69 · 197,999 sh	197,999	$9.1M	0.51%	-32.3%
70	LORD, ABBETT#70 · 3,634,000 sh	3,634,000	$9.0M	0.03%	+29.7%
71	AQR CAPITAL MANAGEMENT#71 · 188,232 sh	188,232	$8.7M	<0.01%	+13.2%
72	CDC Financial#72 · 181,430 sh	181,430	$8.3M	3.50%	-26.5%
73	SUSQUEHANNA INTERNATIONAL GROUP, LLP#73 · 179,384 sh	179,384	$8.3M	<0.01%	+128.6%
74	ALLIANCEBERNSTEIN L.P.#74 · 140,313 sh	140,313	$8.2M	<0.01%	-12.0%
75	VICTORY CAPITAL MANAGEMENT#75 · 177,069 sh	177,069	$8.1M	<0.01%	+177.4%
76	Counterpoint Mutual Funds#76 · 166,967 sh	166,967	$7.7M	—	+1341.1%
77	Drummond Knight Asset Management Pty Ltd#77 · 162,274 sh	162,274	$7.5M	—	-42.3%
78	Russell Investments Group, Ltd.#78 · 157,703 sh	157,703	$7.3M	<0.01%	+127.1%
79	RHUMBLINE ADVISERS#79 · 153,617 sh	153,617	$7.1M	<0.01%	-2.9%
80	AMERIPRISE FINANCIAL#80 · 149,372 sh	149,372	$6.9M	<0.01%	+48.4%
81	CSM Advisors#81 · 146,212 sh	146,212	$6.7M	0.14%	-6.1%
82	FRANKLIN RESOURCES#82 · 144,112 sh	144,112	$6.6M	<0.01%	+15.5%
83	ICON ADVISERS#83 · 140,500 sh	140,500	$6.5M	1.22%	-18.9%
84	Insight Wealth Strategies#84 · 143,472 sh	143,472	$6.2M	—	-1.7%
85	Swiss National Bank#85 · 134,050 sh	134,050	$6.2M	<0.01%	+21.4%
86	Neuberger Berman Group#86 · 133,927 sh	133,927	$6.2M	<0.01%	+83.1%
87	BOOTHBAY FUND MANAGEMENT#87 · 133,461 sh	133,461	$6.1M	0.08%	+60.9%
88	CIBC WORLD MARKET#88 · 132,202 sh	132,202	$6.1M	<0.01%	-17.7%
89	COHEN & STEERS#89 · 126,118 sh	126,118	$5.8M	<0.01%	+6.7%
90	PICTON MAHONEY ASSET MANAGEMENT#90 · 125,902 sh	125,902	$5.8M	0.04%	-57.4%
91	Legal & General Group Plc#91 · 123,069 sh	123,069	$5.7M	<0.01%	+9.3%
92	RENAISSANCE GROUP#92 · 118,147 sh	118,147	$5.4M	0.22%	+1493.4%
93	ENVESTNET ASSET MANAGEMENT#93 · 115,267 sh	115,267	$5.3M	<0.01%	+39.2%
94	STATE OF WISCONSIN INVESTMENT BOARD#94 · 109,502 sh	109,502	$5.0M	0.01%	+9.2%
95	Cinctive Capital Management#95 · 107,201 sh	107,201	$4.9M	0.18%	+122.6%
96	BESSEMER GROUP#96 · 102,496 sh	102,496	$4.7M	<0.01%	0.0%
97	RAYMOND JAMES FINANCIAL#97 · 101,421 sh	101,421	$4.7M	<0.01%	-7.5%
98	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#98 · 100,220 sh	100,220	$4.6M	<0.01%	+4.1%
99	Hudson Bay Capital Management#99 · 100,000 sh	100,000	$4.6M	0.01%	+1238.5%
100	Y-Intercept (Hong Kong) Ltd#100 · 96,141 sh	96,141	$4.4M	—	+6.4%

Funds that sold out of CENX in Q2 2026 (58)

Held CENX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held CENX in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
Bornite Capital Management542,000 sh	542,000	$31.8M
TUDOR INVESTMENT ET AL279,161 sh	279,161	$16.4M
AMERICAN CENTURY COMPANIES232,034 sh	232,034	$13.6M
HRT FINANCIAL195,992 sh	195,992	$11.5M
Burkehill Global Management150,000 sh	150,000	$8.8M
Wealth High Governance Capital Ltda140,525 sh	140,525	$8.2M
Wealth High Governance Asset Management Ltda.118,950 sh	118,950	$7.0M
Portolan Capital Management95,039 sh	95,039	$5.6M
Informed Momentum85,714 sh	85,714	$5.0M
MOORE CAPITAL MANAGEMENT82,752 sh	82,752	$4.9M
Riggs Asset Managment63,292 sh	63,292	$3.7M
AXIOM INVESTORS58,610 sh	58,610	$3.4M
Quadrature Capital Ltd54,645 sh	54,645	$3.2M
Trexquant Investment44,268 sh	44,268	$2.6M
OCCUDO QUANTITATIVE STRATEGIES31,518 sh	31,518	$1.9M
Harvest Investment Services25,720 sh	25,720	$1.5M
Sigma Planning22,158 sh	22,158	$1.3M
Scientech Research20,487 sh	20,487	$1.2M
Fieldview Capital Management19,000 sh	19,000	$1.1M
Virtu Financial14,998 sh	14,998	$880.0K
ExodusPoint Capital Management14,604 sh	14,604	$857.1K
Entropy Technologies14,589 sh	14,589	$856.2K
Quantbot Technologies14,383 sh	14,383	$844.1K
Oceanic Investment Management LTD12,553 sh	12,553	$736.7K
MARSHALL WACE, LLP11,754 sh	11,754	$689.8K
GSA CAPITAL PARTNERS LLP10,650 sh	10,650	$625.0K
AXQ CAPITAL10,627 sh	10,627	$623.7K
Summit Global Investments7,866 sh	7,866	$462.0K
HighTower Advisors7,593 sh	7,593	$445.6K
Magnetar Financial7,437 sh	7,437	$436.5K
Numerai GP7,100 sh	7,100	$416.7K
ANB BANK6,106 sh	6,106	$358.4K
Baird Financial Group5,473 sh	5,473	$321.2K
CHOREO5,386 sh	5,386	$316.1K
AIGEN INVESTMENT MANAGEMENT5,014 sh	5,014	$294.3K
TWINBEECH CAPITAL4,908 sh	4,908	$288.1K
Marex Group plc4,600 sh	4,600	$270.0K
Vise Technologies6,616 sh	6,616	$259.2K
Moran Wealth Management4,248 sh	4,248	$249.3K
Olympiad Research3,915 sh	3,915	$229.8K
Corient Private Wealth3,775 sh	3,775	$221.6K
LEAVELL INVESTMENT MANAGEMENT3,765 sh	3,765	$221.0K
Madrona Financial Services3,680 sh	3,680	$216.0K
WILEY BROS.-AINTREE CAPITAL3,608 sh	3,608	$211.8K
Orion Porfolio Solutions3,593 sh	3,593	$210.9K
PRAXIS INVESTMENT MANAGEMENT3,551 sh	3,551	$208.0K
O'SHAUGHNESSY ASSET MANAGEMENT3,477 sh	3,477	$204.1K
QUADRANT CAPITAL GROUP2,380 sh	2,380	$118.8K
SUMMIT SECURITIES GROUP717 sh	717	$42.1K
MAI Capital Management477 sh	477	$28.0K
Delos Wealth Advisors425 sh	425	$24.9K
TWIN PEAKS WEALTH ADVISORS164 sh	164	$9.6K
Sound Income Strategies146 sh	146	$9.3K
Annis Gardner Whiting Capital Advisors147 sh	147	$8.6K
Root Financial Partners114 sh	114	$6.7K
Vermillion Wealth Management7 sh	7	$411.00
Aster Capital Management (DIFC) Ltd16 sh	16	$297.00
CURIO WEALTH1 sh	1	$59.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.