Quartz Partners’s Costco COST Stock Holding History

Quartz 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 Q3	–	Sell	-227	Closed	-$225K	–	185
2025 Q2	$225K	Sell	227 -90	-28%	-$89.5K	0.1%	158
2025 Q1	$300K	Buy	317 +25	+9%	+$24.4K	0.18%	113
2024 Q4	$267K	Sell	292 -2	-0.7%	-$1.86K	0.16%	127
2024 Q3	$260K	Buy	+294	New	+$255K	0.16%	128

Other funds holding COST

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 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

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

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

Royal Bank of Canada Toronto, Ontario, Canada $570B AUM 27.57% 1-Year Est. Return

Quartz Partners's COST Position: Q3 2025 in Review

Quartz Partners sold out of Costco (COST) in Q3 2025, closing a stake of 227 shares — an estimated $225K sold.

Quartz Partners first reported a position in COST in Q3 2024 and held it in 4 quarters. The position peaked at $300K in Q1 2025. 3,932 funds tracked by Wall St. Rank hold COST as of Q3 2025.

Quartz Partners reported no remaining Costco position as of Q3 2025 after selling out during the quarter.
Quartz Partners sold 227 Costco shares in Q3 2025, an estimated $225K.
Quartz Partners first reported a position in Costco in Q3 2024 and held it in 4 quarters.
Quartz Partners's Costco position peaked at $300K in Q1 2025.
3,932 funds tracked by Wall St. Rank held Costco as of Q3 2025.

Based on Quartz Partners's 13F filing for Q3 2025, filed 13 Nov 2025.