COST fund manager activity
Costco Wholesale Corporation · Nasdaq. Reported by 19 tracked fund managers in their 13F filings, Q2 2013 to Q3 2026.
Q1 2026
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Ron Baron - Baron Capital | No change | 6,349 | $6,326,334 | 0.02% | May 15, 2026 |
| Ken Fisher - Fisher Asset Management | Added | 3,219,856 | $3,208,361,404 | 1.09% | May 5, 2026 |
| Jeremy Grantham - GMO | Trimmed | 208 | $207,257 | 0.00% | May 14, 2026 |
| Thomas Russo - Gardner Russo & Quinn | No change | 4,624 | $4,607,417 | 0.05% | May 13, 2026 |
| Francois Rochon - Giverny Capital | Sold out | — | — | 0.00% | May 15, 2026 |
| Joel Greenblatt - Gotham Asset Management | Trimmed | 17,357 | $17,295,036 | 0.05% | May 15, 2026 |
| Mairs & Power Funds | Added | 2,963 | $2,952,422 | 0.03% | May 14, 2026 |
| Thomas Gayner - Markel Group | No change | 39,150 | $39,010,235 | 0.33% | May 1, 2026 |
| David Katz - Matrix Asset Advisors | Trimmed | 559 | $556,568 | 0.05% | Apr 22, 2026 |
| Lee Ainslie - Maverick Capital | Sold out | — | — | 0.00% | May 15, 2026 |
| Bill Nygren - Oakmark Funds | Trimmed | 362 | $360,708 | 0.00% | May 15, 2026 |
| Christopher Bloomstran - Semper Augustus | Trimmed | 3,367 | $3,354,980 | 0.40% | May 15, 2026 |
| Torray Funds | No change | 628 | $625,758 | 0.09% | May 1, 2026 |
Q4 2025
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Ron Baron - Baron Capital | No change | 6,349 | $5,474,997 | 0.01% | Feb 17, 2026 |
| Ken Fisher - Fisher Asset Management | Added | 3,176,286 | $2,739,039,479 | 0.93% | Feb 9, 2026 |
| Jeremy Grantham - GMO | Trimmed | 1,508 | $1,300,409 | 0.00% | Feb 17, 2026 |
| Thomas Russo - Gardner Russo & Quinn | No change | 4,624 | $3,987,295 | 0.04% | Feb 12, 2026 |
| Francois Rochon - Giverny Capital | No change | 240 | $206,962 | 0.01% | Feb 13, 2026 |
| Joel Greenblatt - Gotham Asset Management | Added | 20,047 | $17,287,330 | 0.06% | Feb 17, 2026 |
| Mairs & Power Funds | Trimmed | 2,933 | $2,529,243 | 0.02% | Feb 17, 2026 |
| Thomas Gayner - Markel Group | No change | 39,150 | $33,760,611 | 0.27% | Feb 6, 2026 |
| David Katz - Matrix Asset Advisors | No change | 563 | $485,896 | 0.04% | Jan 16, 2026 |
| Lee Ainslie - Maverick Capital | New | 2,894 | $2,495,612 | 0.03% | Feb 13, 2026 |
| Bill Nygren - Oakmark Funds | Added | 656 | $565,695 | 0.00% | Feb 17, 2026 |
| Christopher Bloomstran - Semper Augustus | Added | 3,447 | $2,972,486 | 0.34% | Feb 17, 2026 |
| Torray Funds | No change | 628 | $541,550 | 0.08% | Jan 28, 2026 |