J.M. Arbour’s Costco COST Stock Holding History

J.M. Arbour’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	$287K	Buy	307 +13	+4%	+$13K	0.25%	99
2026 Q1	$293K	Sell	294 -3	-1%	-$2.92K	0.28%	94
2025 Q4	$256K	Buy	+297	New	+$269K	0.26%	95

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

J.M. Arbour's COST Position: Q2 2026 in Review

J.M. Arbour increased its Costco (COST) stake by 4.4% in Q2 2026, buying an estimated $13K and bringing the position to 307 shares worth $287K. The position accounts for 0.25% of the portfolio, ranked #99.

J.M. Arbour first reported a position in COST in Q4 2025 and has held it in 3 quarters since. The position peaked at $293K in Q1 2026. 4,259 funds tracked by Wall St. Rank hold COST as of Q2 2026.

J.M. Arbour held 307 shares of Costco worth $287K as of Q2 2026.
J.M. Arbour bought 13 Costco shares in Q2 2026, an estimated $13K.
Costco made up 0.25% of J.M. Arbour's portfolio in Q2 2026, its #99 holding.
J.M. Arbour first reported a position in Costco in Q4 2025 and has held it in 3 quarters since.
J.M. Arbour's Costco position peaked at $293K in Q1 2026.
4,259 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on J.M. Arbour's 13F filing for Q2 2026, filed 14 Aug 2026.