Aigen Investment Management’s Century Aluminum CENX Stock Holding History

Aigen Investment 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	–	Sell	-5,014	Closed	-$294K	–	577
2026 Q1	$294K	Buy	+5,014	New	+$251K	0.08%	333
2025 Q3	–	Sell	-11,792	Closed	-$212K	–	825
2025 Q2	$212K	Buy	+11,792	New	+$200K	0.03%	643
2025 Q1	–	Sell	-17,143	Closed	-$312K	–	788
2024 Q4	$312K	Buy	+17,143	New	+$337K	0.06%	467
2024 Q3	–	Sell	-16,574	Closed	-$278K	–	765
2024 Q2	$278K	Buy	+16,574	New	+$282K	0.05%	505
2022 Q3	–	Sell	-14,175	Closed	-$104K	–	599
2022 Q2	$104K	Buy	14,175 +6,483	+84%	+$101K	0.02%	483
2022 Q1	$202K	Buy	+7,692	New	+$162K	0.03%	466
2020 Q4	–	Sell	-11,834	Closed	-$84K	–	802
2020 Q3	$84K	Buy	+11,834	New	+$103K	0.01%	736
2020 Q1	–	Sell	-37,032	Closed	-$278K	–	1293
2019 Q4	$278K	Buy	+37,032	New	+$257K	0.05%	462

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

Aigen Investment Management's CENX Position: Q2 2026 in Review

Aigen Investment Management sold out of Century Aluminum (CENX) in Q2 2026, closing a stake of 5,014 shares — an estimated $294K sold.

Aigen Investment Management first reported a position in CENX in Q4 2019 and held it in 8 quarters. The position peaked at $312K in Q4 2024. 413 funds tracked by Wall St. Rank hold CENX as of Q2 2026.

Aigen Investment Management reported no remaining Century Aluminum position as of Q2 2026 after selling out during the quarter.
Aigen Investment Management sold 5,014 Century Aluminum shares in Q2 2026, an estimated $294K.
Aigen Investment Management first reported a position in Century Aluminum in Q4 2019 and held it in 8 quarters.
Aigen Investment Management's Century Aluminum position peaked at $312K in Q4 2024.
413 funds tracked by Wall St. Rank held Century Aluminum as of Q2 2026.

Based on Aigen Investment Management's 13F filing for Q2 2026, filed 14 Aug 2026.