BlackDiamond Wealth Management’s Costco COST Stock Holding History

BlackDiamond Wealth Management’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	$2.94M	Buy	2,955 +7	+0.2%	+$6.82K	1.41%	14
2025 Q4	$2.94M	Sell	2,948 -524	-15%	-$475K	1.43%	18
2025 Q3	$3.21M	Sell	3,472 -49	-1%	-$47K	1.75%	15
2025 Q2	$3.47M	Buy	3,521 +106	+3%	+$105K	2%	14
2025 Q1	$3.44M	Sell	3,415 -52	-1%	-$50.7K	2.33%	10
2024 Q4	$3.18M	Sell	3,467 -11	-0.3%	-$10.2K	1.84%	11
2024 Q3	$3.24M	Buy	3,478 +94	+3%	+$81.6K	1.96%	12
2024 Q2	$2.84M	Buy	3,384 +2,884	+577%	+$2.25M	1.87%	13
2024 Q1	$367K	Buy	500 +21	+4%	+$15K	0.26%	88
2023 Q4	$341K	Buy	479 +27	+6%	+$16K	0.25%	88
2023 Q3	$251K	Buy	452 +24	+6%	+$13.2K	0.23%	99
2023 Q2	$242K	Buy	+428	New	+$217K	0.2%	109

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

BlackDiamond Wealth Management's COST Position: Q1 2026 in Review

BlackDiamond Wealth Management increased its Costco (COST) stake by 0.24% in Q1 2026, buying an estimated $6.82K and bringing the position to 2,955 shares worth $2.94M. The position accounts for 1.41% of the portfolio, ranked #14.

BlackDiamond Wealth Management first reported a position in COST in Q2 2023 and has held it in 12 quarters since. The position peaked at $3.47M in Q2 2025. 4,237 funds tracked by Wall St. Rank hold COST as of Q1 2026.

BlackDiamond Wealth Management held 2,955 shares of Costco worth $2.94M as of Q1 2026.
BlackDiamond Wealth Management bought 7 Costco shares in Q1 2026, an estimated $6.82K.
Costco made up 1.41% of BlackDiamond Wealth Management's portfolio in Q1 2026, its #14 holding.
BlackDiamond Wealth Management first reported a position in Costco in Q2 2023 and has held it in 12 quarters since.
BlackDiamond Wealth Management's Costco position peaked at $3.47M in Q2 2025.
4,237 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on BlackDiamond Wealth Management's 13F filing for Q1 2026, filed 12 May 2026.