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
2026 Q1	$2.93M	Sell	50,000 -166,688	-77%	-$8.36M	0.63%	39
2025 Q4	$8.49M	Sell	216,688 -1,077	-0.5%	-$33.7K	3.07%	7
2025 Q3	$6.39M	Buy	217,765 +22,538	+12%	+$511K	2.2%	10
2025 Q2	$3.52M	Buy	+195,227	New	+$3.31M	0.99%	26
2025 Q1	–	Sell	-45,274	Closed	-$870K	–	54
2024 Q4	$825K	Buy	+45,274	New	+$890K	0.31%	44
2024 Q3	–	Sell	-33,500	Closed	-$561K	–	73
2024 Q2	$561K	Buy	+33,500	New	+$570K	0.14%	46

Other funds holding CENX

Glencore Baar, Switzerland $4.87B AUM 67.38% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Sourcerock Group Denver, Colorado $2.48B AUM 72.25% 1-Year Est. Return

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 Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

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.