MPM
COST icon

MBB Public Markets’s Costco COST Stock Holding History

MBB Public Markets’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 		– Sell
-289
Closed -$286K – 133
2025
Q2 		$286K Sell
289
-63
-18% -$62.6K 0.03% 154
2025
Q1 		$333K Buy
+352
New +$343K 0.04% 88
2024
Q4 		– Sell
-360
Closed -$319K – 190
2024
Q3 		$319K Sell
360
-31,206
-99% -$27.1M 0.02% 367
2024
Q2 		$26.8M Buy
31,566
+30,354
+2,504% +$23.7M 0.54% 34
2024
Q1 		$888K Buy
+1,212
New +$865K 0.05% 106
2022
Q1 		– Sell
-3,477
Closed -$1.97M – 167
2021
Q4 		$1.97M Buy
+3,477
New +$1.78M 0.04% 67

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 $1.88T AUM 44.46% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Royal Bank of Canada
Royal Bank of Canada Toronto, Ontario, Canada $672B AUM 33.48% 1-Year Est. Return

MBB Public Markets's COST Position: Q3 2025 in Review

MBB Public Markets sold out of Costco (COST) in Q3 2025, closing a stake of 289 shares — an estimated $286K sold.

MBB Public Markets first reported a position in COST in Q4 2021 and held it in 6 quarters. The position peaked at $26.8M in Q2 2024. 3,939 funds tracked by Wall St. Rank hold COST as of Q3 2025.

  • MBB Public Markets reported no remaining Costco position as of Q3 2025 after selling out during the quarter.
  • MBB Public Markets sold 289 Costco shares in Q3 2025, an estimated $286K.
  • MBB Public Markets first reported a position in Costco in Q4 2021 and held it in 6 quarters.
  • MBB Public Markets's Costco position peaked at $26.8M in Q2 2024.
  • 3,939 funds tracked by Wall St. Rank held Costco as of Q3 2025.

Based on MBB Public Markets's 13F filing for Q3 2025, filed 14 Nov 2025.