COST Institutional Ownership
Who owns Costco Wholesale Corp and what the big funds did with it last quarter, from every SEC 13F filing. 4,253 funds reported holding COST at Jun 30, 2026, together owning 73.0% of the company.
- ●1,840 buying vs 1,857 selling
- ▲Held by funds +0.7 pts
- ●Funds holding -23
- ▼Superinvestors: 1 added, 4 cut
- ▲Put/call 1.58 to 1.11
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 4,253 | 4,276 | −0.5% |
| In funds' top 10 | 182 | 279 | −34.8% |
| 13F shares | 324M | 321M | +0.9% |
| Held by funds | 73.0% | 72.4% | +0.7 pts |
| New positions | 144 | 253 | −43.1% |
| Increased | 1,696 | 1,745 | −2.8% |
| Reduced | 1,694 | 1,613 | +5.0% |
| Sold out | 163 | 127 | +28.3% |
| Calls (shares) | 1.2M | 1.1M | +10.3% |
| Puts (shares) | 1.6M | 1.7M | −10.3% |
| Put/call ratio | 1.11 | 1.58 | −29.6% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in COST
All superinvestors →
Who owns COST
share of fund held shares- Index and passive funds41.8%
- Active managers and hedge funds32.6%
- Banks and brokers20.4%
- Pensions, insurers and other5.2%
The top 10 holders own 45.3% of all COST shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
1,810 funds changed their position- Assenagon Asset Management S.A.Trimmed−839K sh
- Alphinity Investment Management Pty LtdSold out−221K sh
- Robeco Institutional Asset Management B.V.Trimmed−155K sh
- Cambridge Investment Research Advisors, Inc.Trimmed−140K sh
- Provident Trust CoTrimmed−138K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.72% | 34.2M | $32B | −744K |
| 2 | Vanguard Capital Management LLC | 6.54% | 29M | $27.1B | +129K |
| 3 | State Street Corp | 4.15% | 18.4M | $17.2B | +233K |
| 4 | Invesco Ltd. | 3.16% | 14M | $13.1B | +360K |
| 5 | Geode Capital Management, LLC | 2.40% | 10.6M | $9.9B | −32K |
| 6 | Vanguard Portfolio Management LLC | 2.35% | 10.4M | $9.7B | −303K |
| 7 | Morgan Stanley | 2.31% | 10.2M | $9.6B | +322K |
| 8 | Bank of America Corp /de/ | 1.64% | 7.2M | $6.8B | −265K |
| 9 | Norges Bank | 1.46% | 6.5M | $6.1B | +6.5M |
| 10 | Fmr LLC | 1.39% | 6.2M | $5.8B | −555K |
- Norges Bank+6.5M sh+$6.1B
- SG Americas Securities, LLC+956K sh+$894M
- Marshall Wace, LLP+911K sh+$852M
- Assenagon Asset Management S.A.+831K sh+$777M
- Royal Bank of Canada+533K sh+$499M
- Invesco Ltd.+360K sh+$337M
- Acadian Asset Management LLC+326K sh+$305M
- Morgan Stanley+322K sh+$301M
- Diamant Asset Management, Inc.−6.7M sh−$6.3B
- BlackRock, Inc.−744K sh−$696M
- Fmr LLC−555K sh−$519M
- Price T Rowe Associates Inc /md/−513K sh−$479M
- Amundi−415K sh−$388M
- American Century Companies Inc−358K sh−$335M
- Vanguard Portfolio Management LLC−303K sh−$284M
- Franklin Resources Inc−276K sh−$258M
COST institutional ownership FAQ
Who owns the most COST stock?
In Q2 2026 13F filings the largest holder of COST was BlackRock, Inc., followed by Vanguard Capital Management LLC and State Street Corp. Index fund managers are usually the biggest holders of large companies.
What percentage of COST is owned by institutions?
Funds that file 13F reports held 73.0% of COST's shares at Jun 30, 2026, compared with 72.4% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying COST?
In Q2 2026, 1,840 funds bought COST (144 of them new positions) and 1,857 sold (163 sold out completely). Among well known investors, 1 added and 4 cut. Our fund sentiment for COST is neutral.
What is COST's institutional put/call ratio?
Funds reported $1.4B of COST puts against $1.3B of calls, a put/call ratio of 1.11 (1.58 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this COST ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.