Altar Rock’s Costco COST Stock Holding History

Altar Rock’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
2026 Q2	–	Sell	-349	Closed	-$348K	–	91
2026 Q1	$348K	Buy	349 +62	+22%	+$60.4K	0.41%	40
2025 Q4	$247K	Buy	+287	New	+$260K	0.3%	78

Other funds holding COST

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.38T AUM 44.17% 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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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

Norges Bank Oslo, Norway $1T AUM

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

Altar Rock's COST Position: Q2 2026 in Review

Altar Rock sold out of Costco (COST) in Q2 2026, closing a stake of 349 shares — an estimated $348K sold.

Altar Rock first reported a position in COST in Q4 2025 and held it in 2 quarters. The position peaked at $348K in Q1 2026. 4,260 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Altar Rock reported no remaining Costco position as of Q2 2026 after selling out during the quarter.
Altar Rock sold 349 Costco shares in Q2 2026, an estimated $348K.
Altar Rock first reported a position in Costco in Q4 2025 and held it in 2 quarters.
Altar Rock's Costco position peaked at $348K in Q1 2026.
4,260 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Altar Rock's 13F filing for Q2 2026, filed 21 Sep 2026.