Who owns Costco Wholesale Corp (COST)?
653 US mutual funds and ETFs from 260 fund families reported a position in COST for the quarter ending 2026-06-30. Against their own report a quarter earlier, 175 raised shares, 52 opened a new position, 331 cut and 22 sold out.
Largest fund families
| Fund family | Funds | Share of fund-held shares |
|---|---|---|
| Vanguard Index Funds | 4 | 41.9% |
| Ishares Trust | 17 | 13.6% |
| Invesco Qqq Trust, Series 1 | 1 | 12.8% |
| Vanguard Institutional Index Funds | 2 | 3.6% |
| College Retirement Equities Fund | 5 | 2.7% |
| Spdr Series Trust | 15 | 2.5% |
Tracked managers holding COST
| Investor | Book weight |
|---|---|
| Hosking | 1.8% |
| Two Sigma | 0.7% |
Source: SEC Form N-PORT, which funds file about 60 days after quarter end, and the latest 13F filings. Share counts, not trades: a change can reflect fund inflows or outflows rather than a decision about COST. A record of holdings, not a forecast and not investment advice. See all owner pages or the forecast board for the names our model ranks.
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