Costco
COST
4,273 hedge funds and large institutions have $312B invested in Costco in 2026 Q1 according to their latest regulatory filings, with 324 funds opening new positions, 1,797 increasing their positions, 1,637 reducing their positions, and 127 closing their positions.
155% more first-time investments, than exits
New positions opened: 324 | Existing positions closed: 127
50% more funds holding in top 10
Funds holding in top 10: 187 → 281 (+94)
15% more capital invested
Capital invested by funds: $272B → $312B (+$39.7B)
3% more funds holding
Funds holding: 4,136 → 4,273 (+137)
10% more repeat investments, than reductions
Existing positions increased: 1,797 | Existing positions reduced: 1,637
0.39% less ownership
Funds ownership: 71.09% → 70.7% (-0.39%)
8% less call options, than puts
Call options by funds: $7.06B | Put options by funds: $7.69B
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Capital International Investors
Los Angeles,
California
|
+$2.06B |
| 2 |
JP Morgan Chase
New York
|
+$1.03B |
| 3 |
Nuveen
Charlotte,
North Carolina
|
+$878M |
| 4 |
Bank of America
Charlotte,
North Carolina
|
+$754M |
| 5 |
AQR Capital Management
Greenwich,
Connecticut
|
+$680M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Capital World Investors
Los Angeles,
California
|
-$1.85B |
| 2 |
Renaissance Technologies
New York
|
-$656M |
| 3 |
Invesco
Atlanta,
Georgia
|
-$639M |
| 4 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
-$612M |
| 5 |
BNP Paribas Financial Markets
Paris,
France
|
-$535M |
COST Hedge Fund Activity: Q1 2026 in Review
4,273 of the 8,207 institutional investors tracked by Wall St. Rank reported a position in Costco (COST) for Q1 2026, worth a combined $312B — up 15% from $272B a quarter earlier.
Buyers outnumbered sellers: 324 funds opened new COST positions and 127 closed out — a net gain of 197 holders — while 1,797 added to existing stakes and 1,637 trimmed.
The largest buyer was Capital International Investors, adding an estimated $2.06B. The largest seller was Capital World Investors, cutting an estimated $1.85B.
- 4,273 institutional investors held Costco (COST) as of Q1 2026, up from 4,136 in Q4 2025.
- Funds reported $312B of Costco stock for Q1 2026, up 15% quarter-over-quarter.
- 324 funds opened new Costco positions in Q1 2026 and 127 closed out, a net change of +197 holders.
- The largest Costco buyer in Q1 2026 was Capital International Investors, an estimated $2.06B added.
- The largest Costco seller in Q1 2026 was Capital World Investors, an estimated $1.85B sold.
Based on aggregated 13F filings for Q1 2026.