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 Q2	$460K	Sell	10,000 -40,000	-80%	-$2.41M	0.1%	87
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 $6.73T AUM 46.02% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Sourcerock Group Denver, Colorado $1.92B AUM 45.54% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Hartree Partners's CENX Position: Q2 2026 in Review

Hartree Partners reduced its Century Aluminum (CENX) stake by 80% in Q2 2026, selling an estimated $2.41M and leaving 10,000 shares worth $460K. The position accounts for 0.1% of the portfolio, ranked #87.

Hartree Partners first reported a position in CENX in Q2 2024 and has held it in 7 quarters since. The position peaked at $8.49M in Q4 2025. 415 funds tracked by Wall St. Rank hold CENX as of Q2 2026.

Hartree Partners held 10,000 shares of Century Aluminum worth $460K as of Q2 2026.
Hartree Partners sold 40,000 Century Aluminum shares in Q2 2026, an estimated $2.41M.
Century Aluminum made up 0.1% of Hartree Partners's portfolio in Q2 2026, its #87 holding.
Hartree Partners first reported a position in Century Aluminum in Q2 2024 and has held it in 7 quarters since.
Hartree Partners's Century Aluminum position peaked at $8.49M in Q4 2025.
415 funds tracked by Wall St. Rank held Century Aluminum as of Q2 2026.

Based on Hartree Partners's 13F filing for Q2 2026, filed 12 Aug 2026.