CenterBook Partners’s Costco COST Stock Holding History

CenterBook Partners’s Portfolio COST Stock Details COST Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-20,939	Closed	-$19.4M	–	575
2025 Q3	$19.4M	Buy	20,939 +19,301	+1,178%	+$18.5M	0.96%	16
2025 Q2	$1.62M	Buy	1,638 +1,241	+313%	+$1.23M	0.09%	255
2025 Q1	$375K	Buy	+397	New	+$387K	0.02%	430
2024 Q4	–	Sell	-31,431	Closed	-$27.9M	–	490
2024 Q3	$27.9M	Buy	+31,431	New	+$27.3M	1.71%	4
2022 Q3	–	Sell	-1,255	Closed	-$601K	–	399
2022 Q2	$601K	Buy	1,255 +470	+60%	+$238K	0.13%	259
2022 Q1	$452K	Buy	+785	New	+$412K	0.16%	221

Other funds holding COST

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 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

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

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

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

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

Norges Bank Oslo, Norway $1T AUM

Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

CenterBook Partners's COST Position: Q4 2025 in Review

CenterBook Partners sold out of Costco (COST) in Q4 2025, closing a stake of 20,939 shares — an estimated $19.4M sold.

CenterBook Partners first reported a position in COST in Q1 2022 and held it in 6 quarters. The position peaked at $27.9M in Q3 2024. 4,124 funds tracked by Wall St. Rank hold COST as of Q4 2025.

CenterBook Partners reported no remaining Costco position as of Q4 2025 after selling out during the quarter.
CenterBook Partners sold 20,939 Costco shares in Q4 2025, an estimated $19.4M.
CenterBook Partners first reported a position in Costco in Q1 2022 and held it in 6 quarters.
CenterBook Partners's Costco position peaked at $27.9M in Q3 2024.
4,124 funds tracked by Wall St. Rank held Costco as of Q4 2025.

Based on CenterBook Partners's 13F filing for Q4 2025, filed 11 Feb 2026.