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COST · Costco Wholesale Corp /New

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$934.66 -21.46 (-2.24%) At close · Aug 27
Market Cap
$417.31B
Shares
443.48M

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.

Holders: 4,189
Total Value: $315,766,185,068
Total Shares: 337,788,609
Showing 1–100 of 4,293 holdings by value · page 1 of 43

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 4,189 13F filers · Δ vs Mar 31, 2026
Top Holder
10.1%
Sep 2023 → Jun 2026 · range 10.1% – 13.8%
−0.9 pts
Top 5
31.5%
Sep 2023 → Jun 2026 · range 31.5% – 37.0%
−1.2 pts
Top 10
43.6%
Sep 2023 → Jun 2026 · range 43.3% – 46.9%
+0.3 pts
HHI
292
Sep 2023 → Jun 2026 · range 292 – 412
Broadly held−19

Quarterly Activity

vs Mar 31, 2026
New
192
Increased
1,719
Decreased
1,699
Sold Out
268
Unchanged
579
Holder count: -76
Institutional value: +0.3%
Shares held: +6.8%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 4,293
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 909832 CUSIP 22160K105 13F (30d) 2566 filings 2500 filers Visit website Investor relations