Rubicon Advisors’s Costco COST Stock Holding History

Rubicon Advisors’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	$934K	Sell	999 -1	-0.1%	-$996	0.68%	35
2026 Q1	$996K	Sell	1,000 -14	-1%	-$13.6K	0.87%	27
2025 Q4	$874K	Buy	+1,014	New	+$919K	0.81%	24

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 $3.37T 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

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

Rubicon Advisors's COST Position: Q2 2026 in Review

Rubicon Advisors reduced its Costco (COST) stake by 0.1% in Q2 2026, selling an estimated $996 and leaving 999 shares worth $934K. The position accounts for 0.68% of the portfolio, ranked #35.

Rubicon Advisors first reported a position in COST in Q4 2025 and has held it in 3 quarters since. The position peaked at $996K in Q1 2026. 4,210 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Rubicon Advisors held 999 shares of Costco worth $934K as of Q2 2026.
Rubicon Advisors sold 1 Costco share in Q2 2026, an estimated $996.
Costco made up 0.68% of Rubicon Advisors's portfolio in Q2 2026, its #35 holding.
Rubicon Advisors first reported a position in Costco in Q4 2025 and has held it in 3 quarters since.
Rubicon Advisors's Costco position peaked at $996K in Q1 2026.
4,210 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Rubicon Advisors's 13F filing for Q2 2026, filed 29 Jul 2026.