PEAK6
COST icon

PEAK6’s Costco COST Stock Holding History

PEAK6’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 		$8.05M Sell
8,600
-4,800
-36% -$4.78M 0.02% 660
2026
Q1 		$13.4M Sell
13,400
-6,600
-33% -$6.43M 0.03% 475
2025
Q4 		$17.2M Buy
20,000
+1,200
+6% +$1.09M 0.03% 425
2025
Q3 		$17.4M Sell
18,800
-39,700
-68% -$38.1M 0.03% 467
2025
Q2 		$57.9M Buy
58,500
+9,800
+20% +$9.74M 0.11% 161
2025
Q1 		$46.1M Sell
48,700
-6,900
-12% -$6.73M 0.1% 159
2024
Q4 		$50.9M Buy
+55,600
New +$51.6M 0.11% 157

Other funds holding COST

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

PEAK6's COST Position: Q2 2026 in Review

PEAK6 reduced its Costco (COST) stake by 15% in Q2 2026, selling an estimated $1.58M and leaving 9,073 shares worth $8.49M. The position accounts for 0.02% of the portfolio, ranked #645.

PEAK6 first reported a position in COST in Q4 2024 and has held it in 6 quarters since. The position peaked at $11.5M in Q4 2024. 4,238 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • PEAK6 held 9,073 shares of Costco worth $8.49M as of Q2 2026.
  • PEAK6 sold 1,588 Costco shares in Q2 2026, an estimated $1.58M.
  • Costco made up 0.02% of PEAK6's portfolio in Q2 2026, its #645 holding.
  • PEAK6 first reported a position in Costco in Q4 2024 and has held it in 6 quarters since.
  • PEAK6's Costco position peaked at $11.5M in Q4 2024.
  • 4,238 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on PEAK6's 13F filing for Q2 2026, filed 13 Aug 2026.