# COSTCO WHSL CORP NEW (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: 2026-07-08T11:38:09.596Z

## Summary

As of the most recent 13F filing period, COSTCO WHSL CORP NEW (COST) is held by 9 tracked superinvestors with an aggregate position value of $98.2M representing 0391502761819265462433672963628559360 shares.

## Top institutional holders (9)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Tom Gayner](https://superinvestorclub.com/manager/22) | Markel Group | 39150 | $39.0M | 0.33% | 2026-03-31 |
| 2 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 27618 | $27.5M | 0.12% | 2026-03-31 |
| 3 | [FPA Queens Road](https://superinvestorclub.com/manager/97) | Bragg Financial Advisors | 19265 | $19.2M | 0.61% | 2026-03-31 |
| 4 | [Tom Russo](https://superinvestorclub.com/manager/30) | Gardner Russo & Gardner | 4624 | $4.6M | 0.05% | 2026-03-31 |
| 5 | [Christopher Bloomstran](https://superinvestorclub.com/manager/32) | Semper Augustus Investments | 3367 | $3.4M | 0.40% | 2026-03-31 |
| 6 | [Mairs & Power](https://superinvestorclub.com/manager/92) | Mairs & Power | 2963 | $3.0M | 0.03% | 2026-03-31 |
| 7 | [Torray LLC](https://superinvestorclub.com/manager/3250) | Torray LLC | 628 | $625,758 | 0.09% | 2026-03-31 |
| 8 | [David Katz](https://superinvestorclub.com/manager/79) | Matrix Asset Advisors | 559 | $556,568 | 0.05% | 2026-03-31 |
| 9 | [Dan Sundheim](https://superinvestorclub.com/manager/3261) | D1 Capital Partners | 360 | $359,168 | 0.15% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2023-09-30: 2 holders, $3.2M aggregate, 05143557 shares
- 2023-12-31: 2 holders, $4.0M aggregate, 05550547 shares
- 2024-03-31: 5 holders, $428.1M aggregate, 05348283915054774355547 shares
- 2024-06-30: 5 holders, $416.8M aggregate, 04408193915054774330544 shares
- 2024-09-30: 8 holders, $196.8M aggregate, 016889139150542243303097544275240 shares
- 2024-12-31: 11 holders, $143.2M aggregate, 08039439150198495397435027392405894643240239 shares
- 2025-03-31: 11 holders, $110.2M aggregate, 039150331461954811415463742452700643573240239 shares
- 2025-06-30: 10 holders, $93.4M aggregate, 039150250601941946333768636581573240239 shares
- 2025-09-30: 11 holders, $104.9M aggregate, 0414943915019175462434353221628581564240240 shares
- 2025-12-31: 12 holders, $90.5M aggregate, 03915030342190864624344729332894656628563360240 shares
- 2026-03-31: 9 holders, $98.2M aggregate, 0391502761819265462433672963628559360 shares

## Recent congressional trades (36)

- 2026-01-30: Gil Cisneros (Democrat-CA) purchase $1,001 - $15,000
- 2025-12-29: Markwayne Mullin (Republican-OK) purchase $15,001 - $50,000
- 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: 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
- 2025-10-09: John Boozman (Republican-AR) purchase $1,001 - $15,000
- 2025-10-07: Ro Khanna (Democrat-CA) sale $15,001 - $50,000
- 2025-07-10: Lisa McClain (Republican-MI) sale $1,001 - $15,000
- 2025-06-17: Lisa McClain (Republican-MI) purchase $1,001 - $15,000
- 2025-06-09: Lisa McClain (Republican-MI) sale $1,001 - $15,000
- 2025-05-12: Jefferson Shreve (Republican-IN) sale $100,001 - $250,000
- 2025-04-21: Bruce Westerman (Republican-AR) sale $1,001 - $15,000

## Recent insider transactions (0)


## Citation

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