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Hartree Partners’s Century Aluminum CENX Stock Holding History

Hartree Partners’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
2025
Q4 		– Sell
-3,000
Closed -$1.3M – 66
2025
Q3 		$1.3M Buy
+3,000
New +$68K 0.45% 35
2025
Q2 		– Sell
-200,000
Closed -$245K – 72
2025
Q1 		$245K Buy
+200,000
New +$3.84M 0.09% 44

Other funds holding CENX

G
Glencore Baar, Switzerland $4.87B AUM 67.38% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 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

Hartree Partners's CENX Position: Q1 2026 in Review

Hartree Partners reduced its Century Aluminum (CENX) stake by 77% in Q1 2026, selling an estimated $8.36M and leaving 50,000 shares worth $2.93M. The position accounts for 0.63% of the portfolio, ranked #39.

Hartree Partners first reported a position in CENX in Q2 2024 and has held it in 6 quarters since. The position peaked at $8.49M in Q4 2025. 386 funds tracked by Wall St. Rank hold CENX as of Q1 2026.

  • Hartree Partners held 50,000 shares of Century Aluminum worth $2.93M as of Q1 2026.
  • Hartree Partners sold 166,688 Century Aluminum shares in Q1 2026, an estimated $8.36M.
  • Century Aluminum made up 0.63% of Hartree Partners's portfolio in Q1 2026, its #39 holding.
  • Hartree Partners first reported a position in Century Aluminum in Q2 2024 and has held it in 6 quarters since.
  • Hartree Partners's Century Aluminum position peaked at $8.49M in Q4 2025.
  • 386 funds tracked by Wall St. Rank held Century Aluminum as of Q1 2026.

Based on Hartree Partners's 13F filing for Q1 2026, filed 12 May 2026.