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Corton Capital’s Costco COST Stock Holding History

Corton Capital’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
2025
Q3 		$368K Buy
+398
New +$381K 0.91% 12
2024
Q1 		– Sell
-1,096
Closed -$723K – 531
2023
Q4 		$723K Sell
1,096
-128
-10% -$75.9K 0.23% 94
2023
Q3 		$692K Buy
1,224
+380
+45% +$210K 0.35% 55
2023
Q2 		$454K Buy
844
+1
+0.1% +$506 0.21% 118
2023
Q1 		$419K Buy
+843
New +$413K 0.29% 93

Other funds holding COST

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
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
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Royal Bank of Canada
Royal Bank of Canada Toronto, Ontario, Canada $570B AUM 27.57% 1-Year Est. Return

Corton Capital's COST Position: Q3 2025 in Review

Corton Capital opened a new position in Costco (COST) in Q3 2025: 398 shares worth $368K. The stake represents 0.91% of the portfolio and ranks #12 among its holdings. This is a return to the name: Corton Capital previously reported a position in COST as recently as Q4 2023.

Corton Capital first reported a position in COST in Q1 2023 and has held it in 5 quarters since. The position peaked at $723K in Q4 2023. 3,932 funds tracked by Wall St. Rank hold COST as of Q3 2025.

  • Corton Capital held 398 shares of Costco worth $368K as of Q3 2025.
  • Costco was a new Corton Capital position in Q3 2025.
  • Costco made up 0.91% of Corton Capital's portfolio in Q3 2025, its #12 holding.
  • Corton Capital first reported a position in Costco in Q1 2023 and has held it in 5 quarters since.
  • Corton Capital's Costco position peaked at $723K in Q4 2023.
  • 3,932 funds tracked by Wall St. Rank held Costco as of Q3 2025.

Based on Corton Capital's 13F filing for Q3 2025, filed 14 Nov 2025.