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Marathon Trading Investment Management’s Costco COST Stock Holding History

Marathon Trading Investment 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
2025
Q2 		– Sell
-300
Closed -$284K – 300
2025
Q1 		$284K Buy
+300
New +$292K 0.04% 191
2024
Q1 		– Sell
-200
Closed -$132K – 380
2023
Q4 		$132K Sell
200
-100
-33% -$59.3K 0.01% 291
2023
Q3 		$169K Buy
+300
New +$166K 0.01% 232
2021
Q4 		– Sell
-1,300
Closed -$584K – 322
2021
Q3 		$584K Buy
+1,300
New +$571K 0.04% 201
2018
Q1 		– Sell
-64,000
Closed -$11.9M – 179
2017
Q4 		$11.9M Buy
+64,000
New +$11M 0.33% 26
2015
Q3 		– Sell
-4,000
Closed -$540K – 337
2015
Q2 		$540K Hold
4,000
– – 0.02% 303
2015
Q1 		$606K Buy
+4,000
New +$587K 0.03% 319

Other funds holding COST

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 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
Norges Bank
Norges Bank Oslo, Norway $935B AUM
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

Marathon Trading Investment Management's COST Position: Q2 2025 in Review

Marathon Trading Investment Management sold out of Costco (COST) in Q2 2025, closing a stake of 1,594 shares — an estimated $1.51M sold.

Marathon Trading Investment Management first reported a position in COST in Q4 2017 and held it in 4 quarters. The position peaked at $2.31M in Q4 2017. 4,004 funds tracked by Wall St. Rank hold COST as of Q2 2025.

  • Marathon Trading Investment Management reported no remaining Costco position as of Q2 2025 after selling out during the quarter.
  • Marathon Trading Investment Management sold 1,594 Costco shares in Q2 2025, an estimated $1.51M.
  • Marathon Trading Investment Management first reported a position in Costco in Q4 2017 and held it in 4 quarters.
  • Marathon Trading Investment Management's Costco position peaked at $2.31M in Q4 2017.
  • 4,004 funds tracked by Wall St. Rank held Costco as of Q2 2025.

Based on Marathon Trading Investment Management's 13F filing for Q2 2025, filed 7 Aug 2025.