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COST · Costco Wholesale Corp /New · Holdings

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$955.33 +8.41 (+0.89%)
Market Cap
$419.61B
Shares
443.13M
Volume · Oct 12 433.3K Avg daily vol (3M) 2.07M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 4,268
Total Value: $316,755,218,167
Total Shares: 339,026,962
Showing 1–100 of 4,372 holdings by value · page 1 of 44

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 4,273 13F filers
Top Holder
10.1%
Sep 2023 → Jun 2026 · range 10.1% – 13.8%
of institutional value
Top 5
31.3%
Sep 2023 → Jun 2026 · range 31.3% – 37.0%
of institutional value
Top 10
43.5%
Sep 2023 → Jun 2026 · range 43.5% – 46.9%
of institutional value
HHI
290
Sep 2023 → Jun 2026 · range 290 – 412
Broadly held
Showing 100 of 4,372
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 4,372 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 909832 CUSIP 22160K105 13F (30d) 301 filings 254 filers Visit website Investor relations