Costco Wholesale Corp
COST- Exchange
- Nasdaq
- Industry
- Retail-Variety Stores
- SEC CIK
- 0000909832
No open-market purchases or sales by Costco Wholesale Corp insiders were filed in the last 90 days; 4,261 institutions reported holding it in 13F filings for Q2 2026, worth $301.8B in total; 4 superinvestors hold it, including Markel Group and Gardner Russo & Quinn.
13F holders, Q1 2026
Institutional positions in Costco Wholesale Corp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 4,275
- +198 vs. Q4 2025
- Shares held
- 320.3M
- +54.2M (+20.4%) vs. Q4 2025
- Total value
- $311.5B
- +$83.3B (+36.5%) vs. Q4 2025
- New holders
- 323
- 1,798 more added
- Sold out
- 125
- 1,638 more reduced
62 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting COST on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 4,261 | $301.8B |
| Q1 2026 | 4,275 | $311.5B |
| Q4 2025 | 4,139 | $272.0B |
| Q3 2025 | 3,942 | $274.4B |
| Q2 2025 | 4,012 | $302.3B |
| Q1 2025 | 3,953 | $287.8B |
| Q4 2024 | 3,942 | $279.6B |
| Q3 2024 | 3,591 | $266.7B |
| Q2 2024 | 3,527 | $258.3B |
| Q1 2024 | 3,420 | $222.0B |
| Q4 2023 | 3,344 | $201.0B |
| Q3 2023 | 3,078 | $169.9B |
| Q2 2023 | 3,042 | $162.0B |
| Q1 2023 | 2,944 | $149.2B |
| Q4 2022 | 2,939 | $137.2B |
| Q3 2022 | 2,826 | $141.6B |
| Q2 2022 | 2,785 | $143.4B |
| Q1 2022 | 2,863 | $172.4B |
| Q4 2021 | 2,823 | $170.2B |
| Q3 2021 | 2,463 | $134.3B |
| Q2 2021 | 2,394 | $119.0B |
| Q1 2021 | 2,359 | $104.1B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Costco Wholesale Corp; share changes are against Q4 2025.