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Of the 22 tracked institutions holding COST, 15 have a 3-year clone track record — 10 of them beat the S&P. Average holder's clone alpha: +1.3pt. It's a gauge of who owns the name, not just how many.
Among the 22 tracked institutional investors we monitor, COST (COSTCO WHSL CORP NEW) is held with a combined value of $106.76B across 113,011,407 shares. The largest holder is VANGUARD GROUP INC with a position worth $37.62B (0.55% of their portfolio). 11 funds increased their holdings. 10 funds reduced their position.
Total Institutional Value
$106.76B
Total Shares Held
113,011,407
Institutional Holders
22
% of Shares Outstanding
25.5%
of 443.48M shares · SEC 2026-05-27
Days to Cover
2.8-4.5%
6.96M shares short · FINRA 2026-07-15
Tracked 13F institutions hold 25.5% of COST's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-05-27), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
0
$0
8
$7.07M
Total Transactions
8
Last 12 months
| Date | Insider | Code | Type | Shares | Value |
|---|---|---|---|---|---|
| Jun 23, 2026 | KENNETH D DENMAN | S | Sale | 885 | $847.35K |
| Apr 1, 2026 | Caton Frates | S | Sale | 700 | $695.10K |
| Mar 9, 2026 | Claudine Adamo | S | Sale | 730 | $732.21K |
| Mar 9, 2026 | Claudine Adamo | S | Sale | 730 | $732.21K |
| Jan 21, 2026 | Teresa A. Jones | S | Sale | 850 | $838.32K |
| Jan 16, 2026 | SUSAN L DECKER | S | Sale | 458 | $437.39K |
| Jan 14, 2026 | James C Klauer | S | Sale | 1,500 | $1.41M |
| Jan 9, 2026 | Russell D Miller | S | Sale | 1,500 | $1.37M |
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $37.62B | 0.55% | +0.4% |
| 2 | BlackRock, Inc. | $34.82B | 0.61% | -0.4% |
| 3 | STATE STREET CORP | $18.09B | 0.62% | +0.0% |
| 4 | FMR LLC | $6.69B | 0.35% | +0.4% |
| 5 | Fisher Asset Management, LLC | $3.21B | 1.09% | +1.4% |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $2.57B | 0.30% | +31.8% |
| 7 | AQR CAPITAL MANAGEMENT LLC | $1.02B | 0.47% | +211.9% |
| 8 | MILLENNIUM MANAGEMENT LLC | $679.90M | 0.28% | +8.8% |
| 9 | Capital Research Global Investors | $605.05M | 0.09% | +5.5% |
| 10 | CITADEL ADVISORS LLC | $542.85M | 0.38% | -11.4% |
| Member | Type | Date |
|---|---|---|
| Dan Newhouse | Buy | Jul 10, 2026 |
| Alan Armstrong | Buy | Mar 27, 2026 |
| Gilbert Cisneros | Buy | Jan 30, 2026 |
| Markwayne Mullin | Buy |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of COST with a position worth $37.62B, representing 0.55% of their portfolio. In total, 22 institutional investors hold COST with a combined value of $106.76B.
Institutional investors hold $106.76B worth of COST stock across 22 positions. The largest institutional holder is VANGUARD GROUP INC with $37.62B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For COST, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their COST positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| Dec 29, 2025 |
| Gilbert Cisneros | Sell | Dec 24, 2025 |
| Richard Dean McCormick | Buy | Nov 5, 2025 |
| Shelley M Capito | Sell | Oct 17, 2025 |
| Gilbert Cisneros | Buy | Oct 17, 2025 |
Showing 8 of 66. STOCK Act disclosures lag up to 45 days.
Last Close
$935.03
2026-07-24
YTD
+9.4%
35% of 52-week range
