Advisor OS’s Costco COST Stock Holding History

Advisor OS’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 Q1	$140	Hold	300	–	–	﹤0.01%	574
2025 Q4	$2.42K	Hold	300	–	–	﹤0.01%	493
2025 Q3	$125	Hold	300	–	–	﹤0.01%	475
2025 Q2	$1.51K	Buy	+300	New	+$298K	﹤0.01%	455

Other funds holding COST

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

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

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

DAM

Diamant Asset Management Ridgefield, Connecticut $137B AUM 18.02% 1-Year Est. Return

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

Advisor OS's COST Position: Q1 2026 in Review

Advisor OS increased its Costco (COST) stake by 4.1% in Q1 2026, buying an estimated $127K and bringing the position to 3,326 shares worth $3.31M. The position accounts for 0.24% of the portfolio, ranked #70.

Advisor OS first reported a position in COST in Q2 2020 and has held it in 15 quarters since. 4,237 funds tracked by Wall St. Rank hold COST as of Q1 2026.

Advisor OS held 3,326 shares of Costco worth $3.31M as of Q1 2026.
Advisor OS bought 130 Costco shares in Q1 2026, an estimated $127K.
Costco made up 0.24% of Advisor OS's portfolio in Q1 2026, its #70 holding.
Advisor OS first reported a position in Costco in Q2 2020 and has held it in 15 quarters since.
4,237 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Advisor OS's 13F filing for Q1 2026, filed 8 May 2026.