Costco
COST
3,939 hedge funds and large institutions have $274B invested in Costco in 2025 Q3 according to their latest regulatory filings, with 169 funds opening new positions, 1,662 increasing their positions, 1,585 reducing their positions, and 170 closing their positions.
5% more repeat investments, than reductions
Existing positions increased: 1,662 | Existing positions reduced: 1,585
1% less first-time investments, than exits
New positions opened: 169 | Existing positions closed: 170
9% less call options, than puts
Call options by funds: $9.17B | Put options by funds: $10.1B
2% less funds holding
Funds holding: 4,009 → 3,939 (-70)
1.98% less ownership
Funds ownership: 68.93% → 66.95% (-2%)
9% less capital invested
Capital invested by funds: $302B → $274B (-$27.8B)
27% less funds holding in top 10
Funds holding in top 10: 320 → 235 (-85)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Amundi
Paris,
France
|
+$945M |
| 2 |
Goldman Sachs
New York
|
+$592M |
| 3 |
Canada Pension Plan Investment Board
Toronto Ontario,
Ontario, Canada
|
+$419M |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$405M |
| 5 |
Bank of Montreal
Toronto,
Ontario, Canada
|
+$380M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
-$1.4B |
| 2 |
Nuveen
Charlotte,
North Carolina
|
-$914M |
| 3 |
BlackRock
New York
|
-$769M |
| 4 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
-$727M |
| 5 |
Axa
Paris,
France
|
-$376M |
COST Hedge Fund Activity: Q3 2025 in Review
3,939 of the 7,639 institutional investors tracked by Wall St. Rank reported a position in Costco (COST) for Q3 2025, worth a combined $274B — down 9.2% from $302B a quarter earlier.
Sellers outnumbered buyers: 170 funds closed out of COST and 169 opened new positions — a net loss of 1 holder — while 1,585 trimmed existing stakes and 1,662 added.
The largest buyer was Amundi, adding an estimated $945M. The largest seller was Fidelity Investments, cutting an estimated $1.4B.
- 3,939 institutional investors held Costco (COST) as of Q3 2025, down from 4,009 in Q2 2025.
- Funds reported $274B of Costco stock for Q3 2025, down 9.2% quarter-over-quarter.
- 169 funds opened new Costco positions in Q3 2025 and 170 closed out, a net change of -1 holder.
- The largest Costco buyer in Q3 2025 was Amundi, an estimated $945M added.
- The largest Costco seller in Q3 2025 was Fidelity Investments, an estimated $1.4B sold.
Based on aggregated 13F filings for Q3 2025.