CenterBook Partners’s Century Aluminum CENX Stock Holding History

CenterBook 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	$1.3M	Buy	+28,356	New	+$1.71M	0.06%	310
2026 Q1	–	Sell	-9,582	Closed	-$375K	–	666
2025 Q4	$375K	Sell	9,582 -14,421	-60%	-$451K	0.02%	513
2025 Q3	$705K	Buy	+24,003	New	+$544K	0.03%	433

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

CenterBook Partners's CENX Position: Q2 2026 in Review

CenterBook Partners opened a new position in Century Aluminum (CENX) in Q2 2026: 28,356 shares worth $1.3M. The stake represents 0.06% of the portfolio and ranks #310 among its holdings. This is a return to the name: CenterBook Partners previously reported a position in CENX as recently as Q4 2025.

CenterBook Partners first reported a position in CENX in Q3 2025 and has held it in 3 quarters since. 415 funds tracked by Wall St. Rank hold CENX as of Q2 2026.

CenterBook Partners held 28,356 shares of Century Aluminum worth $1.3M as of Q2 2026.
Century Aluminum was a new CenterBook Partners position in Q2 2026.
Century Aluminum made up 0.06% of CenterBook Partners's portfolio in Q2 2026, its #310 holding.
CenterBook Partners first reported a position in Century Aluminum in Q3 2025 and has held it in 3 quarters since.
415 funds tracked by Wall St. Rank held Century Aluminum as of Q2 2026.

Based on CenterBook Partners's 13F filing for Q2 2026, filed 11 Aug 2026.