Supply breakdown
Shares as of Sep 29, 2026| Category | Shares | % | Value | Status |
|---|---|---|---|---|
| Circulating | 443.13M | 100.0% | $414.53B | Estimated |
| Free float | - | - | - | Unavailable |
| Insider-held, unrestricted | - | - | - | Unavailable |
| Locked team funds | 0 | 0.0% | $0 | Unavailable |
| Other restricted | 0 | 0.0% | $0 | Unavailable |
| Total outstanding | 443.13M | 100.0% | $414.53B | Verified |
| Ownership views (overlap the categories above, never added) | ||||
| Institutional holdings (13F) | 322.61M | 72.8% | $301.79B | Estimated |
| Insider-held, all (Forms 3, 4, 5) | - | - | - | Unavailable |
Institutional and insider holdings can include both tradable and locked shares, so they are shown for reference and never added to the total. Check: circulating + locked team + other restricted = total outstanding reconciles.
Valuation
- Traditional$414.53B
- Fully diluted$414.98B
- Circulating$414.53B
- Free float-
- Locked team value$0
- Other restricted value$0
Locked and restricted shares
Not reviewed yet.
Institutional holders
| Holder | Shares | % of total |
|---|---|---|
| BlackRock, Inc. | 34.20M | 7.72% |
| VANGUARD CAPITAL MANAGEMENT LLC | 28.98M | 6.54% |
| STATE STREET CORP | 18.38M | 4.15% |
| Invesco Ltd. | 13.99M | 3.16% |
| GEODE CAPITAL MANAGEMENT, LLC | 10.63M | 2.40% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 10.40M | 2.35% |
| MORGAN STANLEY | 10.22M | 2.31% |
| BANK OF AMERICA CORP /DE/ | 7.25M | 1.64% |
| NORGES BANK | 6.47M | 1.46% |
| FMR LLC | 6.16M | 1.39% |
Insiders
Forms 3, 4 and 5Form 4 aggregation pending
Share classes
| Class | Listing | Shares outstanding | As of |
|---|---|---|---|
| Common stock | COST on Nasdaq | 443,129,349 | Sep 29, 2026 |
Notes and sources
- COSTCO WHOLESALE CORP /NEW 10-K for period ended 2026-08-30, Cover page (0000909832-26-000093)
- SEC public float (non-affiliates): $451.60B as of Feb 15, 2026, from the 10-K cover. It is a dollar value at a past date, not circulating supply.