COST Costco Wholesale Corporation
Costco Wholesale Corporation (COST) Institutional Ownership
What the institutions did with COST last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 34.2M | 10.6% |
| VANGUARD CAPITAL MANAGEMENT LLC | 29.0M | 9.0% |
| STATE STREET CORP | 18.4M | 5.7% |
| Invesco Ltd. | 14.0M | 4.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 10.6M | 3.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 10.4M | 3.2% |
| MORGAN STANLEY | 10.2M | 3.2% |
| BANK OF AMERICA CORP /DE/ | 7.2M | 2.2% |
| NORGES BANK | 6.5M | 2.0% |
| FMR LLC | 6.2M | 1.9% |
| NORTHERN TRUST CORP | 4.8M | 1.5% |
| ROYAL BANK OF CANADA | 4.3M | 1.3% |
| JPMORGAN CHASE & CO | 4.2M | 1.3% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.6M | 1.1% |
| GOLDMAN SACHS GROUP INC | 3.3M | 1.0% |
| Fisher Asset Management, LLC | 3.3M | 1.0% |
| Bank of New York Mellon Corp | 3.2M | 1.0% |
| Nuveen, LLC | 3.2M | 1.0% |
| WELLS FARGO & COMPANY/MN | 3.1M | 1.0% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 3.1M | 0.9% |
| Capital International Investors | 2.8M | 0.9% |
| UBS Group AG | 2.7M | 0.8% |
| ALLIANCEBERNSTEIN L.P. | 2.5M | 0.8% |
| Legal & General Group Plc | 2.5M | 0.8% |
| VANGUARD FIDUCIARY TRUST CO | 2.5M | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| DIAMANT ASSET MANAGEMENT, INC. | Reduced | 6.7M | 6.8K | -6.7M |
| SG Americas Securities, LLC | Increased | 817.4K | 1.8M | +955.9K |
| MARSHALL WACE, LLP | Increased | 263.7K | 1.2M | +910.7K |
| Assenagon Asset Management S.A. | Increased | 509.7K | 1.3M | +830.9K |
| BlackRock, Inc. | Reduced | 34.9M | 34.2M | -744.2K |
| FMR LLC | Reduced | 6.7M | 6.2M | -555.0K |
| ROYAL BANK OF CANADA | Increased | 3.8M | 4.3M | +533.3K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 2.6M | 2.1M | -512.5K |
| Amundi | Reduced | 2.8M | 2.4M | -414.6K |
| Invesco Ltd. | Increased | 13.6M | 14.0M | +359.9K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 1.8M | 1.4M | -358.2K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 815.3K | 1.1M | +325.8K |
| MORGAN STANLEY | Increased | 9.9M | 10.2M | +321.7K |
| Ninety One UK Ltd | Increased | 202 | 306.0K | +305.8K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 10.7M | 10.4M | -303.1K |
| FRANKLIN RESOURCES INC | Reduced | 1.4M | 1.2M | -275.8K |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | 688.0K | 413.6K | -274.4K |
| CITIGROUP INC | Increased | 605.1K | 873.1K | +268.0K |
| BANK OF AMERICA CORP /DE/ | Reduced | 7.5M | 7.2M | -265.3K |
| Rathbones Group PLC | Reduced | 471.9K | 218.5K | -253.4K |
| MILLENNIUM MANAGEMENT LLC | Increased | 136.5K | 380.7K | +244.2K |
| HRT FINANCIAL LP | Increased | 83.3K | 325.0K | +241.7K |
| STATE STREET CORP | Increased | 18.2M | 18.4M | +232.7K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 3.4M | 3.6M | +231.4K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 1.0M | 1.3M | +226.1K |
| ALLIANCEBERNSTEIN L.P. | Reduced | 2.8M | 2.5M | -217.2K |
| TD Asset Management Inc | Reduced | 937.2K | 720.4K | -216.8K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 148.1K | 361.3K | +213.2K |
| UBS Group AG | Increased | 2.5M | 2.7M | +195.6K |
| STEADFAST CAPITAL MANAGEMENT LP | Increased | 40.8K | 234.1K | +193.3K |
| JPMORGAN CHASE & CO | Increased | 4.0M | 4.2M | +184.3K |
| Bank of New York Mellon Corp | Reduced | 3.4M | 3.2M | -176.6K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Increased | 2.9M | 3.1M | +160.9K |
| Balyasny Asset Management L.P. | Increased | 145.1K | 304.0K | +158.9K |
| Point72 Asset Management, L.P. | Sold Out | 155.6K | 0 | -155.6K |
| HSBC HOLDINGS PLC | Increased | 1.1M | 1.2M | +152.3K |
| Capital Research Global Investors | Reduced | 607.2K | 456.2K | -151.0K |
| ProShare Advisors LLC | Reduced | 627.7K | 480.4K | -147.2K |
| JENNISON ASSOCIATES LLC | Reduced | 2.3M | 2.2M | -146.4K |
| Holocene Advisors, LP | New | 0 | 142.6K | +142.6K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 553.3K | 692.1K | +138.8K |
| Cambridge Investment Research Advisors, Inc. | Increased | 138.8K | 277.4K | +138.7K |
| TWO SIGMA INVESTMENTS, LP | Increased | 874.8K | 1.0M | +131.4K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 28.8M | 29.0M | +129.2K |
| Trexquant Investment LP | New | 0 | 124.7K | +124.7K |
| BARCLAYS PLC | Reduced | 1.1M | 943.1K | -123.9K |
| Nuveen, LLC | Increased | 3.1M | 3.2M | +115.8K |
| APG Asset Management N.V. | Reduced | 759.9K | 645.9K | -114.0K |
| Squarepoint Ops LLC | Reduced | 228.5K | 115.7K | -112.8K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | 285.1K | 172.8K | -112.3K |
| DEUTSCHE BANK AG\ | Increased | 1.4M | 1.5M | +109.8K |
| AMERIPRISE FINANCIAL INC | Reduced | 1.4M | 1.3M | -106.9K |
| Qube Research & Technologies Ltd | Increased | 180.9K | 286.4K | +105.6K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | 302.5K | 199.4K | -103.1K |
| PANAGORA ASSET MANAGEMENT INC | Reduced | 215.0K | 115.2K | -99.8K |
| TRILLIUM ASSET MANAGEMENT, LLC | Reduced | 143.8K | 46.5K | -97.3K |
| Allianz Asset Management GmbH | Increased | 215.6K | 310.8K | +95.2K |
| VANGUARD ASSET MANAGEMENT, Ltd | Increased | 772.4K | 866.8K | +94.5K |
| NORTHERN TRUST CORP | Reduced | 4.9M | 4.8M | -92.2K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | Reduced | 446.2K | 354.7K | -91.5K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.