Pinnacle West Asset Management’s Costco COST Stock Holding History

Pinnacle West Asset 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 Q2	–	Sell	-2,005	Closed	-$2M	–	108
2026 Q1	$2M	Hold	2,005	–	–	1.36%	24
2025 Q4	$1.73M	Hold	2,005	–	–	1.12%	30
2025 Q3	$1.86M	Buy	2,005 +5	+0.3%	+$4.79K	1.2%	26
2025 Q2	$1.98M	Hold	2,000	–	–	1.37%	23
2025 Q1	$1.89M	Hold	2,000	–	–	1.37%	24
2024 Q4	$1.83M	Hold	2,000	–	–	1.31%	24
2024 Q3	$1.77M	Hold	2,000	–	–	1.27%	26
2024 Q2	$1.7M	Hold	2,000	–	–	1.32%	24
2024 Q1	$1.47M	Hold	2,000	–	–	1.16%	29
2023 Q4	$1.32M	Hold	2,000	–	–	1.13%	32
2023 Q3	$1.13M	Hold	2,000	–	–	1.11%	34
2023 Q2	$1.08M	Hold	2,000	–	–	1.05%	33
2023 Q1	$994K	Buy	+2,000	New	+$981K	1.04%	34

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 $3.38T AUM 44.17% 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

Pinnacle West Asset Management's COST Position: Q2 2026 in Review

Pinnacle West Asset Management sold out of Costco (COST) in Q2 2026, closing a stake of 2,005 shares — an estimated $2M sold.

Pinnacle West Asset Management first reported a position in COST in Q1 2023 and held it in 13 quarters. The position peaked at $2M in Q1 2026. 4,260 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Pinnacle West Asset Management reported no remaining Costco position as of Q2 2026 after selling out during the quarter.
Pinnacle West Asset Management sold 2,005 Costco shares in Q2 2026, an estimated $2M.
Pinnacle West Asset Management first reported a position in Costco in Q1 2023 and held it in 13 quarters.
Pinnacle West Asset Management's Costco position peaked at $2M in Q1 2026.
4,260 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Pinnacle West Asset Management's 13F filing for Q2 2026, filed 12 Aug 2026.