State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s Century Aluminum CENX Stock Holding History

State of Wisconsin Investment Board’s Portfolio CENX Stock Details CENX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$5.88M Sell
100,242
-73,697
-42% -$3.69M 0.01% 918
2025
Q4 		$6.81M Buy
173,939
+46,239
+36% +$1.44M 0.02% 869
2025
Q3 		$3.75M Sell
127,700
-75,888
-37% -$1.72M 0.01% 1066
2025
Q2 		$3.67M Buy
203,588
+51,817
+34% +$880K 0.01% 1045
2025
Q1 		$2.82M Buy
151,771
+11,711
+8% +$225K 0.01% 1121
2024
Q4 		$2.55M Buy
140,060
+63,465
+83% +$1.25M 0.01% 1194
2024
Q3 		$1.24M Buy
76,595
+13,300
+21% +$201K ﹤0.01% 1489
2024
Q2 		$1.06M Buy
63,295
+14,989
+31% +$255K ﹤0.01% 1542
2024
Q1 		$743K Buy
+48,306
New +$542K ﹤0.01% 1537
2023
Q4 		– Sell
-82,354
Closed -$592K – 2404
2023
Q3 		$592K Buy
82,354
+774
+0.9% +$6.24K ﹤0.01% 1660
2023
Q2 		$711K Buy
81,580
+14,453
+22% +$126K ﹤0.01% 1620
2023
Q1 		$671K Buy
+67,127
New +$695K ﹤0.01% 1708
2022
Q3 		– Sell
-12,104
Closed -$89K – 2700
2022
Q2 		$89K Buy
+12,104
New +$188K ﹤0.01% 2638
2021
Q2 		– Sell
-21,300
Closed -$376K – 2084
2021
Q1 		$376K Sell
21,300
-9,700
-31% -$138K ﹤0.01% 1679
2020
Q4 		$342K Sell
31,000
-14,100
-31% -$128K ﹤0.01% 1663
2020
Q3 		$321K Buy
45,100
+32,200
+250% +$280K ﹤0.01% 1779
2020
Q2 		$92K Sell
12,900
-8,700
-40% -$46K ﹤0.01% 1651
2020
Q1 		$78K Buy
+21,600
New +$121K ﹤0.01% 1664

Other funds holding CENX

G
Glencore Baar, Switzerland $4.87B AUM 67.38% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
SG
Sourcerock Group Denver, Colorado $2.48B AUM 72.25% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

State of Wisconsin Investment Board's CENX Position: Q1 2026 in Review

State of Wisconsin Investment Board reduced its Century Aluminum (CENX) stake by 42% in Q1 2026, selling an estimated $3.69M and leaving 100,242 shares worth $5.88M. The position accounts for 0.01% of the portfolio, ranked #918.

State of Wisconsin Investment Board first reported a position in CENX in Q1 2020 and has held it in 18 quarters since. The position peaked at $6.81M in Q4 2025. 386 funds tracked by Wall St. Rank hold CENX as of Q1 2026.

  • State of Wisconsin Investment Board held 100,242 shares of Century Aluminum worth $5.88M as of Q1 2026.
  • State of Wisconsin Investment Board sold 73,697 Century Aluminum shares in Q1 2026, an estimated $3.69M.
  • Century Aluminum made up 0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #918 holding.
  • State of Wisconsin Investment Board first reported a position in Century Aluminum in Q1 2020 and has held it in 18 quarters since.
  • State of Wisconsin Investment Board's Century Aluminum position peaked at $6.81M in Q4 2025.
  • 386 funds tracked by Wall St. Rank held Century Aluminum as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.