# COSTCO WHOLESALE CORPORATION (COST) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 22160K105
Page URL: https://superinvestorclub.com/stock/COST
Last updated: 2026-08-29T13:47:45.832Z

## Summary

As of the most recent 13F filing period, COSTCO WHOLESALE CORPORATION (COST) is held by 11 tracked superinvestors with an aggregate position value of $93.6M representing 03915026503194443403339933542963628551358351 shares.

## Top institutional holders (11)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Tom Gayner](https://superinvestorclub.com/manager/22) | Markel Group | 39150 | $36.6M | 0.28% | 2026-06-30 |
| 2 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 26503 | $24.8M | 0.10% | 2026-06-30 |
| 3 | [FPA Queens Road](https://superinvestorclub.com/manager/97) | Bragg Financial Advisors | 19444 | $18.2M | 0.49% | 2026-06-30 |
| 4 | [Wally Obermeyer](https://superinvestorclub.com/manager/3283) | Obermeyer Wealth Partners | 3403 | $3.2M | 0.13% | 2026-06-30 |
| 5 | [Tom Russo](https://superinvestorclub.com/manager/30) | Gardner Russo & Gardner | 3399 | $3.2M | 0.04% | 2026-06-30 |
| 6 | [Christopher Bloomstran](https://superinvestorclub.com/manager/32) | Semper Augustus Investments | 3354 | $3.1M | 0.35% | 2026-06-30 |
| 7 | [Mairs & Power](https://superinvestorclub.com/manager/92) | Mairs & Power | 2963 | $2.8M | 0.03% | 2026-06-30 |
| 8 | [Torray LLC](https://superinvestorclub.com/manager/3250) | Torray LLC | 628 | $587,475 | 0.08% | 2026-06-30 |
| 9 | [David Katz](https://superinvestorclub.com/manager/79) | Matrix Asset Advisors | 551 | $515,137 | 0.04% | 2026-06-30 |
| 10 | [Bill Nygren](https://superinvestorclub.com/manager/73) | Harris Associates | 358 | $334,898 | 0.00% | 2026-06-30 |
| 11 | [Dan Sundheim (Mine & Arao)](https://superinvestorclub.com/manager/3261) | Mine & Arao Wealth Creation & Management | 351 | $328,313 | 0.12% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2023-06-30: 1 holders, $1.2M aggregate, 02293 shares
- 2023-09-30: 3 holders, $4.4M aggregate, 051432093557 shares
- 2023-12-31: 3 holders, $5.3M aggregate, 055502006547 shares
- 2024-03-31: 7 holders, $430.8M aggregate, 0534828391505477435520681557547 shares
- 2024-06-30: 6 holders, $418.9M aggregate, 044081939150547743302461544 shares
- 2024-09-30: 9 holders, $199.0M aggregate, 0168891391505422433030972475544275240 shares
- 2024-12-31: 12 holders, $145.8M aggregate, 080394391501984953974350277527392405894643240239 shares
- 2025-03-31: 12 holders, $113.2M aggregate, 0391503314619548114154637424531492700643573240239 shares
- 2025-06-30: 12 holders, $99.7M aggregate, 03915025060194194633376832653188636581573240239 shares
- 2025-09-30: 12 holders, $107.9M aggregate, 04149439150191754624343532253221628581564240240 shares
- 2025-12-31: 13 holders, $93.3M aggregate, 039150303421908646243447325029332894656628563360240 shares
- 2026-03-31: 11 holders, $102.0M aggregate, 03915027618192654624345133672963628559362360 shares

## Recent congressional trades (48)

- 2026-07-30: Richard Dean Dr McCormick (R-GA) sale $1,001 - $15,000
- 2026-07-10: Dan Newhouse (Republican-WA) purchase $1,001 - $15,000
- 2026-01-30: Gil Cisneros (Democrat-CA) purchase $1,001 - $15,000
- 2026-01-30: Gilbert Cisneros (D-CA) purchase $1,001 - $15,000
- 2025-12-29: Markwayne Mullin (Republican-OK) purchase $15,001 - $50,000
- 2025-12-24: Gilbert Cisneros (D-CA) sale $1,001 - $15,000
- 2025-12-24: Gil Cisneros (Democrat-CA) sale $1,001 - $15,000
- 2025-11-10: Ro Khanna (Democrat-CA) purchase $15,001 - $50,000
- 2025-11-05: Richard Dean Dr McCormick (R-GA) purchase $1,001 - $15,000
- 2025-11-05: Rich McCormick (Republican-GA) purchase $1,001 - $15,000
- 2025-11-03: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-10-17: Shelley Moore Capito (Republican-WV) sale $1,001 - $15,000
- 2025-10-17: Gil Cisneros (Democrat-CA) purchase $1,001 - $15,000
- 2025-10-17: Gilbert Cisneros (D-CA) purchase $1,001 - $15,000
- 2025-10-09: John Boozman (Republican-AR) purchase $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "COSTCO WHOLESALE CORPORATION (COST) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/COST), aggregating SEC 13F, Form 4, and congressional disclosures."