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Mountaineer Partners Management’s Century Aluminum CENX Stock Holding History

Mountaineer Partners Management’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
Q2 		$23.2M Sell
503,309
-80,688
-14% -$4.85M 16.84% 1
2026
Q1 		$34.3M Sell
583,997
-24,478
-4% -$1.23M 17.02% 1
2025
Q4 		$23.8M Sell
608,475
-52,568
-8% -$1.64M 13.34% 1
2025
Q3 		$19.4M Sell
661,043
-44,107
-6% -$1,000K 11.29% 1
2025
Q2 		$12.7M Buy
705,150
+65,777
+10% +$1.12M 8.4% 2
2025
Q1 		$11.9M Sell
639,373
-8,472
-1% -$163K 11.36% 1
2024
Q4 		$11.8M Sell
647,845
-759,986
-54% -$14.9M 8.64% 1
2024
Q3 		$22.8M Buy
1,407,831
+69,373
+5% +$1.05M 14.25% 1
2024
Q2 		$22.4M Sell
1,338,458
-803,645
-38% -$13.7M 11.67% 2
2024
Q1 		$33M Sell
2,142,103
-128,702
-6% -$1.45M 15.22% 2
2023
Q4 		$27.6M Buy
2,270,805
+234,937
+12% +$1.84M 14.01% 2
2023
Q3 		$14.6M Buy
2,035,868
+38,525
+2% +$310K 9.38% 2
2023
Q2 		$17.4M Buy
1,997,343
+894,142
+81% +$7.77M 9.61% 2
2023
Q1 		$11M Buy
1,103,201
+139,883
+15% +$1.45M 8.02% 2
2022
Q4 		$7.88M Buy
+963,318
New +$7.28M 7.48% 6
2022
Q2 		– Sell
-546,641
Closed -$14.4M – 12
2022
Q1 		$14.4M Sell
546,641
-153,614
-22% -$3.23M 7.91% 4
2021
Q4 		$11.6M Buy
+700,255
New +$10.2M 6.31% 9

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
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
SG
Sourcerock Group Denver, Colorado $1.92B AUM 45.54% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Mountaineer Partners Management's CENX Position: Q2 2026 in Review

Mountaineer Partners Management reduced its Century Aluminum (CENX) stake by 14% in Q2 2026, selling an estimated $4.85M and leaving 503,309 shares worth $23.2M. The position accounts for 16.84% of the portfolio, ranked #1.

Mountaineer Partners Management first reported a position in CENX in Q4 2021 and has held it in 17 quarters since. The position peaked at $34.3M in Q1 2026. 413 funds tracked by Wall St. Rank hold CENX as of Q2 2026.

  • Mountaineer Partners Management held 503,309 shares of Century Aluminum worth $23.2M as of Q2 2026.
  • Mountaineer Partners Management sold 80,688 Century Aluminum shares in Q2 2026, an estimated $4.85M.
  • Century Aluminum made up 16.84% of Mountaineer Partners Management's portfolio in Q2 2026, its #1 holding.
  • Mountaineer Partners Management first reported a position in Century Aluminum in Q4 2021 and has held it in 17 quarters since.
  • Mountaineer Partners Management's Century Aluminum position peaked at $34.3M in Q1 2026.
  • 413 funds tracked by Wall St. Rank held Century Aluminum as of Q2 2026.

Based on Mountaineer Partners Management's 13F filing for Q2 2026, filed 13 Aug 2026.