Who owns COSTCO WHOLESALE CORP /NEW, from the filings themselves: stakes over 5% (Schedule 13D/G), the institutional managers reporting the stock each quarter (13F), and the funds holding it (N-PORT).
Investors crossing 5% ownership must disclose it. Schedule 13G filers certify the stake is passive; Schedule 13D is the general form for everyone else — founders, strategic holders, and activists alike. Each entry is the holder's most recent disclosure. Coverage begins with SEC's structured filings from December 18, 2024; a holder appears once they file or amend after that date.
Vanguard Capital Management: 7.5% · 33,256,639 shares
The Vanguard Group: 0.0% · 0 shares
Every institutional manager whose latest 13F reports this stock, largest position first. "% of their portfolio" is the weight inside that manager's own book — how much conviction the position represents; "% of company" is how much of COSTCO WHOLESALE CORP /NEW they hold. Together these 4563 managers report 83.17% of shares outstanding.
| Investor | Position value | Shares | % of their portfolio | % of company | As of |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | $37.6B | 43,620,717 | 0.55% | 9.84% | December 31, 2025 |
| BlackRock, Inc. | $32B | 34,202,834 | 0.48% | 7.71% | June 30, 2026 |
4,561 more institutional holders behind a free account
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Sign up freeFunds disclosing this stock in their monthly N-PORT portfolio, with the position's share of the fund's net assets. Together the 500 largest funds we checked hold 27.46% of shares outstanding — counted inside the manager totals above, not on top of them, since a fund's shares also appear in its manager's 13F.
| Fund | Position value | % of net assets | % of company | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND | $13.2B | 0.57% | 3.18% | June 30, 2026 |
| VANGUARD 500 INDEX FUND | $10.8B | 0.64% | 2.59% | June 30, 2026 |
498 more funds behind a free account
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