COST fund manager activity
Costco Wholesale Corporation · Nasdaq. Reported by 19 tracked fund managers in their 13F filings, Q2 2013 to Q3 2026.
Q3 2025
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Ron Baron - Baron Capital | No change | 6,349 | $5,876,825 | 0.02% | Nov 14, 2025 |
| Ken Fisher - Fisher Asset Management | Added | 3,145,241 | $2,911,331,067 | 1.05% | Nov 12, 2025 |
| Jeremy Grantham - GMO | Trimmed | 2,044 | $1,891,988 | 0.01% | Nov 13, 2025 |
| Thomas Russo - Gardner Russo & Quinn | Trimmed | 4,624 | $4,279,820 | 0.05% | Nov 12, 2025 |
| Francois Rochon - Giverny Capital | No change | 240 | $221,837 | 0.01% | Nov 17, 2025 |
| Joel Greenblatt - Gotham Asset Management | Trimmed | 16,049 | $14,855,436 | 0.06% | Nov 14, 2025 |
| Mairs & Power Funds | Added | 3,221 | $2,981,454 | 0.03% | Nov 14, 2025 |
| Thomas Gayner - Markel Group | No change | 39,150 | $36,238,414 | 0.29% | Oct 31, 2025 |
| David Katz - Matrix Asset Advisors | Trimmed | 564 | $522,382 | 0.05% | Oct 14, 2025 |
| Bill Nygren - Oakmark Funds | No change | 581 | $537,791 | 0.00% | Nov 14, 2025 |
| Christopher Bloomstran - Semper Augustus | Trimmed | 3,435 | $3,179,539 | 0.40% | Nov 14, 2025 |
| Torray Funds | Trimmed | 628 | $581,296 | 0.08% | Oct 22, 2025 |
Q2 2025
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Ron Baron - Baron Capital | No change | 6,349 | $6,285,129 | 0.02% | Aug 14, 2025 |
| Ken Fisher - Fisher Asset Management | Trimmed | 3,110,415 | $3,079,125,518 | 1.22% | Aug 13, 2025 |
| Jeremy Grantham - GMO | Added | 2,201 | $2,178,858 | 0.01% | Aug 13, 2025 |
| Thomas Russo - Gardner Russo & Quinn | Trimmed | 4,633 | $4,585,964 | 0.05% | Aug 13, 2025 |
| Francois Rochon - Giverny Capital | No change | 240 | $237,586 | 0.01% | Aug 13, 2025 |
| Joel Greenblatt - Gotham Asset Management | Added | 16,359 | $16,194,428 | 0.10% | Aug 14, 2025 |
| Mairs & Power Funds | Added | 3,188 | $3,155,929 | 0.03% | Aug 14, 2025 |
| Thomas Gayner - Markel Group | No change | 39,150 | $38,756,151 | 0.33% | Aug 1, 2025 |
| David Katz - Matrix Asset Advisors | No change | 573 | $567,483 | 0.06% | Aug 13, 2025 |
| Lee Ainslie - Maverick Capital | Sold out | — | — | 0.00% | Aug 14, 2025 |
| Bill Nygren - Oakmark Funds | New | 581 | $575,155 | 0.00% | Aug 14, 2025 |
| Christopher Bloomstran - Semper Augustus | Trimmed | 3,768 | $3,730,094 | 0.52% | Aug 15, 2025 |
| Torray Funds | Trimmed | 636 | $629,602 | 0.09% | Aug 5, 2025 |