Custom Index Systems’s Costco COST Stock Holding History

Custom Index Systems’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	$1.4M	Buy	1,493 +9	+0.6%	+$8.97K	0.5%	44
2026 Q1	$1.48M	Sell	1,484 -31	-2%	-$30.2K	0.64%	34
2025 Q4	$1.31M	Sell	1,515 -513	-25%	-$465K	0.58%	43
2025 Q3	$1.88M	Buy	2,028 +443	+28%	+$425K	0.56%	44
2025 Q2	$1.57M	Buy	1,585 +182	+13%	+$181K	0.75%	28
2025 Q1	$1.33M	Buy	1,403 +59	+4%	+$57.5K	0.67%	28
2024 Q4	$1.23M	Buy	1,344 +34	+3%	+$31.5K	0.66%	37
2024 Q3	$1.16M	Sell	1,310 -377	-22%	-$327K	0.63%	38
2024 Q2	$1.43M	Buy	1,687 +320	+23%	+$250K	0.82%	34
2024 Q1	$1M	Buy	1,367 +571	+72%	+$408K	0.57%	40
2023 Q4	$525K	Buy	+796	New	+$472K	0.32%	67

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

Custom Index Systems's COST Position: Q2 2026 in Review

Custom Index Systems increased its Costco (COST) stake by 0.61% in Q2 2026, buying an estimated $8.97K and bringing the position to 1,493 shares worth $1.4M. The position accounts for 0.5% of the portfolio, ranked #44.

Custom Index Systems first reported a position in COST in Q4 2023 and has held it in 11 quarters since. The position peaked at $1.88M in Q3 2025. 4,238 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Custom Index Systems held 1,493 shares of Costco worth $1.4M as of Q2 2026.
Custom Index Systems bought 9 Costco shares in Q2 2026, an estimated $8.97K.
Costco made up 0.5% of Custom Index Systems's portfolio in Q2 2026, its #44 holding.
Custom Index Systems first reported a position in Costco in Q4 2023 and has held it in 11 quarters since.
Custom Index Systems's Costco position peaked at $1.88M in Q3 2025.
4,238 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Custom Index Systems's 13F filing for Q2 2026, filed 14 Aug 2026.