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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
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
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
DAM
Diamant Asset Management Ridgefield, Connecticut $147M AUM 25.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Pinnacle West Asset Management's COST Position: Q1 2026 in Review

Pinnacle West Asset Management held its Costco (COST) position steady in Q1 2026 at 2,005 shares worth $2M. The position accounts for 1.36% of the portfolio, ranked #24.

Pinnacle West Asset Management first reported a position in COST in Q1 2023 and has held it in 13 quarters since. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Pinnacle West Asset Management held 2,005 shares of Costco worth $2M as of Q1 2026.
  • Pinnacle West Asset Management left its Costco share count unchanged in Q1 2026.
  • Costco made up 1.36% of Pinnacle West Asset Management's portfolio in Q1 2026, its #24 holding.
  • Pinnacle West Asset Management first reported a position in Costco in Q1 2023 and has held it in 13 quarters since.
  • 4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Pinnacle West Asset Management's 13F filing for Q1 2026, filed 15 May 2026.