Black Diamond Financial’s Costco COST Stock Holding History

Black Diamond Financial’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	$754K	Sell	806 -14	-2%	-$13.9K	0.07%	89
2026 Q1	$817K	Sell	820 -3	-0.4%	-$2.92K	0.09%	84
2025 Q4	$710K	Buy	823 +172	+26%	+$156K	0.07%	81
2025 Q3	$603K	Buy	651 +149	+30%	+$143K	0.07%	91
2025 Q2	$497K	Sell	502 -27	-5%	-$26.8K	0.08%	85
2025 Q1	$501K	Buy	529 +7	+1%	+$6.83K	0.08%	88
2024 Q4	$478K	Sell	522 -70	-12%	-$65K	0.07%	91
2024 Q3	$525K	Buy	592 +35	+6%	+$30.4K	0.09%	78
2024 Q2	$474K	Buy	557 +194	+53%	+$151K	0.09%	87
2024 Q1	$240K	Hold	363	–	–	0.06%	96
2023 Q4	$240K	Buy	363 +2	+0.6%	+$1.19K	0.06%	96
2023 Q3	$204K	Buy	+361	New	+$199K	0.06%	105
2022 Q2	–	Sell	-403	Closed	-$232K	–	119
2022 Q1	$232K	Buy	+403	New	+$211K	0.07%	112

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

Black Diamond Financial's COST Position: Q2 2026 in Review

Black Diamond Financial reduced its Costco (COST) stake by 1.7% in Q2 2026, selling an estimated $13.9K and leaving 806 shares worth $754K. The position accounts for 0.07% of the portfolio, ranked #89.

Black Diamond Financial first reported a position in COST in Q1 2022 and has held it in 13 quarters since. The position peaked at $817K in Q1 2026. 4,251 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Black Diamond Financial held 806 shares of Costco worth $754K as of Q2 2026.
Black Diamond Financial sold 14 Costco shares in Q2 2026, an estimated $13.9K.
Costco made up 0.07% of Black Diamond Financial's portfolio in Q2 2026, its #89 holding.
Black Diamond Financial first reported a position in Costco in Q1 2022 and has held it in 13 quarters since.
Black Diamond Financial's Costco position peaked at $817K in Q1 2026.
4,251 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Black Diamond Financial's 13F filing for Q2 2026, filed 4 Aug 2026.