Public filings / COST on Yahoo Finance (opens in a new tab)
COST: insider buying, 13F holders, analyst moves
Costco Wholesale Corp - US
A summary of public filings about Costco Wholesale Corp - US. For the latest insider history, price chart, analyst changes and activist filings, open the live lookup.
SEC Form 13F · Q2 2026
4 of our 100 managers hold COST
Combined reported value $61.4M.
Holders among our 100 managers: 3 in Q3 2023, 4 in Q2 2026.
| Manager | Value | % of portfolio | Change vs Q1 2026 |
|---|---|---|---|
| Markel Group | $36.6M | 0.28% | Unchanged |
| Tudor Investment | $18.4M | 0.08% | Added |
| Gardner Russo & Quinn | $3.2M | 0.04% | Trimmed |
| Semper Augustus Investments Group | $3.1M | 0.36% | Unchanged |
Important information
Facts from public SEC filings, shown for information only. Not a recommendation. Not individualized investment advice. Gulfstream Capital and its clients may hold positions in securities shown.