Promethium Advisors’s Costco COST Stock Holding History

Promethium 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	$304K	Hold	325	–	–	0.15%	101
2026 Q1	$324K	Hold	325	–	–	0.17%	89
2025 Q4	$280K	Hold	325	–	–	0.15%	95
2025 Q3	$301K	Hold	325	–	–	0.17%	98
2025 Q2	$322K	Hold	325	–	–	0.2%	95
2025 Q1	$307K	Sell	325 -16	-5%	-$15.6K	0.2%	96
2024 Q4	$312K	Sell	341 -10	-3%	-$9.28K	0.21%	101
2024 Q3	$311K	Buy	+351	New	+$305K	0.22%	102

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

Promethium Advisors's COST Position: Q2 2026 in Review

Promethium Advisors held its Costco (COST) position steady in Q2 2026 at 325 shares worth $304K. The position accounts for 0.15% of the portfolio, ranked #101.

Promethium Advisors first reported a position in COST in Q3 2024 and has held it in 8 quarters since. The position peaked at $324K in Q1 2026. 4,247 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Promethium Advisors held 325 shares of Costco worth $304K as of Q2 2026.
Promethium Advisors left its Costco share count unchanged in Q2 2026.
Costco made up 0.15% of Promethium Advisors's portfolio in Q2 2026, its #101 holding.
Promethium Advisors first reported a position in Costco in Q3 2024 and has held it in 8 quarters since.
Promethium Advisors's Costco position peaked at $324K in Q1 2026.
4,247 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Promethium Advisors's 13F filing for Q2 2026, filed 5 Aug 2026.