Costco Wholesale Ownership | Who Owns Costco Wholesale?
Costco Wholesale Ownership Summary
Costco Wholesale is owned by 57.56% institutional investors, 0.16% insiders, and 42.28% retail investors. Vanguard group is the largest institutional shareholder, holding 9.83% of COST shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.18% of its assets in Costco Wholesale shares.
COST Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Costco Wholesale | 57.56% | 0.16% | 42.28% |
| Sector | Consumer Defensive Stocks | 33.19% | 16.40% | 50.41% |
| Industry | Discount Stores Stocks | 49.65% | 5.67% | 44.68% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 43.62M | 9.83% | $37.62B |
| Blackrock funding, inc. /de | 35.10M | 7.91% | $30.27B |
| Blackrock | 33.19M | 7.48% | $28.21B |
| State street | 18.16M | 4.09% | $16.81B |
| Geode capital management | 10.39M | 2.34% | $8.92B |
| Morgan stanley | 9.52M | 2.15% | $8.21B |
| Fmr | 7.95M | 1.79% | $7.36B |
| Diamant asset management | 6.73M | 1.52% | $6.73B |
| Norges bank | 6.02M | 1.36% | $5.20B |
| Northern trust | 5.06M | 1.14% | $4.68B |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Emerald advisors | 622.53K | 76.81% | $620.31M |
| Worldly partners management | 83.64K | 46.23% | $77.42M |
| I.g.y. | 95.75K | 37.13% | $88.63M |
| Baypointe partners | 13.16K | 23.85% | $11.35M |
| Steginsky capital | 132.19K | 19.21% | $114.00M |
| Norman fields, gottscho capital management | 57.19K | 18.84% | $56.98M |
| Greenbrier partners capital management | 224.35K | 14.06% | $207.67M |
| Garrison bradford & associates | 10.83K | 10.14% | $9.34M |
| Provident trust | 470.36K | 9.80% | $468.68M |
| Ocean capital management | 55.83K | 9.59% | $48.14M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Diamant asset management | 6.73M | 4.90% | 6.72M |
| Norges bank | 6.02M | 0.56% | 6.02M |
| Amundi | 3.18M | 0.93% | 986.18K |
| Vestor capital | 970.84K | 0.08% | 966.23K |
| Blackrock | 33.19M | 0.64% | 835.17K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Actiam | 187.24K | 1.82% | -1.60M |
| Fmr | 7.95M | 0.38% | -1.46M |
| Goldman sachs group | 2.59M | 0.28% | -1.10M |
| Assenagon asset management | 509.69K | 0.77% | -627.75K |
| Jennison associates | 2.23M | 1.15% | -596.48K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 6.02M | 0.56% | 6.02M | $5.20B |
| Axa investment managers | 390.39K | 0.98% | 390.39K | $361.36M |
| Cibc world markets | 192.33K | 0.80% | 192.33K | $165.85M |
| Soros fund management | 100.00K | 1.53% | 100.00K | $85.00M |
| Steadfast capital management lp | 98.33K | 1.59% | 98.33K | $91.02M |
Sold Out
| Holder | Change |
|---|---|
| Peak6 | -1.00 |
| Bridge generations wealth management | -1.00 |
| Usa financial portformulas | -2.00 |
| Horizon financial services | -2.00 |
| William b. walkup & associates | -3.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 3,609 | -10.42% | 255,546,837 | -13.82% | 57 | 1.29% | 1,640 | -8.99% | 1,479 | -6.98% |
| Sep 30, 2025 | 3,882 | -4.69% | 294,540,771 | -3.79% | 66 | 1.40% | 1,740 | -9.70% | 1,528 | 1.06% |
| Jun 30, 2025 | 3,974 | -0.85% | 305,715,619 | 2.51% | 68 | 1.53% | 1,883 | 5.31% | 1,476 | -11.56% |
| Mar 31, 2025 | 41 | -98.97% | 1,611,038 | -99.47% | - | 0.01% | 15 | -99.24% | 19 | -98.68% |
| Dec 31, 2024 | 3,757 | 2.90% | 303,476,255 | 0.23% | 68 | 1.47% | 1,833 | 10.55% | 1,392 | -2.18% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 14.10M | 3.18% | 81.75K |
| Vanguard US Total Market Shares ETF | 14.05M | 3.17% | -1.51K |
| Vanguard 500 Index Investor | 11.30M | 2.55% | -95.59K |
| Invesco QQQ Trust | 9.35M | 2.11% | -2.90K |
| iShares Core S&P 500 ETF | 5.71M | 1.29% | -3.11K |
| Fidelity 500 Index | 5.64M | 1.27% | 9.30K |
| SPDR® S&P 500 ETF | 5.52M | 1.24% | -72.34K |
| SPDR® S&P 500® ETF Trust | 5.38M | 1.21% | -28.19K |
| SPDR® S&P 500® ETF | 5.36M | 1.21% | 66.03K |
| State Street® SPDR® S&P 500® ETF | 5.17M | 1.17% | 11.61K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Apr 01, 2026 | Frates Caton | Executive Vice President | Sell | $695.10K |
| Mar 09, 2026 | Adamo Claudine | Executive Vice President | Sell | $732.21K |
| Jan 21, 2026 | Jones Teresa A. | Executive Vice President | Sell | $838.32K |
| Jan 16, 2026 | DECKER SUSAN L | - | Sell | $437.39K |
| Jan 14, 2026 | Klauer James C | Executive Vice President | Sell | $1.41M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 1 |
| 2026 Q1 | - | 5 |
| 2025 Q4 | - | 5 |
| 2025 Q3 | - | 4 |
| 2025 Q2 | - | 5 |
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