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COST icon

Corundum Group’s Costco COST Stock Holding History

Corundum Group’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 		$1.47M Sell
1,479
-117
-7% -$114K 0.49% 43
2025
Q4 		$1.38M Buy
1,596
+251
+19% +$227K 0.46% 41
2025
Q3 		$1.24M Sell
1,345
-26
-2% -$24.9K 0.51% 45
2025
Q2 		$1.36M Buy
1,371
+6
+0.4% +$5.96K 0.6% 37
2025
Q1 		$1.29M Sell
1,365
-629
-32% -$613K 0.62% 34
2024
Q4 		$1.83M Buy
1,994
+627
+46% +$582K 0.68% 39
2024
Q3 		$1.21M Sell
1,367
-689
-34% -$598K 0.55% 42
2024
Q2 		$1.75M Buy
2,056
+607
+42% +$474K 0.68% 40
2024
Q1 		$1.06M Sell
1,449
-48
-3% -$34.3K 0.51% 47
2023
Q4 		$988K Buy
1,497
+35
+2% +$20.7K 0.5% 47
2023
Q3 		$826K Buy
1,462
+276
+23% +$152K 0.47% 50
2023
Q2 		$639K Sell
1,186
-1,013
-46% -$513K 0.32% 67
2023
Q1 		$1.09M Buy
2,199
+630
+40% +$309K 0.52% 58
2022
Q4 		$716K Buy
1,569
+933
+147% +$456K 0.4% 67
2022
Q3 		$300K Buy
636
+10
+2% +$5.2K 0.19% 86
2022
Q2 		$300K Sell
626
-1,084
-63% -$550K 0.2% 81
2022
Q1 		$985K Buy
1,710
+1,181
+223% +$620K 0.92% 35
2021
Q4 		$300K Buy
+529
New +$271K 0.2% 85

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 $137B AUM 18.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Corundum Group's COST Position: Q1 2026 in Review

Corundum Group reduced its Costco (COST) stake by 7.3% in Q1 2026, selling an estimated $114K and leaving 1,479 shares worth $1.47M. The position accounts for 0.49% of the portfolio, ranked #43.

Corundum Group first reported a position in COST in Q4 2021 and has held it in 18 quarters since. The position peaked at $1.83M in Q4 2024. 4,237 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Corundum Group held 1,479 shares of Costco worth $1.47M as of Q1 2026.
  • Corundum Group sold 117 Costco shares in Q1 2026, an estimated $114K.
  • Costco made up 0.49% of Corundum Group's portfolio in Q1 2026, its #43 holding.
  • Corundum Group first reported a position in Costco in Q4 2021 and has held it in 18 quarters since.
  • Corundum Group's Costco position peaked at $1.83M in Q4 2024.
  • 4,237 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Corundum Group's 13F filing for Q1 2026, filed 20 Apr 2026.