Costco Wholesale Corp. – Investors and Politicians Who Own It
COST
Investors who own it
9 tracked investors, $1B in shares, each from their latest 13F.
| Investor | Value | Share of portfolio |
|---|---|---|
| $904.3M | 0.58% | |
Tom GaynerMarkel Group, Q2 2026 | $36.6M | 0.28% |
Ray DalioBridgewater Associates, Q2 2026 | $24.8M | 0.10% |
Barry RitholtzRitholtz Wealth Management, Q2 2026 | $24.4M | 0.36% |
Mario GabelliGAMCO Investors, Q2 2026 | $4.8M | 0.04% |
Tom RussoGardner Russo & Quinn, Q2 2026 | $3.2M | 0.04% |
Chris BloomstranSemper Augustus Investments, Q2 2026 | $3.1M | 0.35% |
Bill NygrenHarris Associates (Oakmark), Q2 2026 | $334.9K | 0.00% |
Jeremy GranthamGMO (Grantham Mayo Van Otterloo), Q2 2026 | $217K | 0.00% |
Politicians who own it
Estimated from annual disclosures and trades; values are rough estimates.
| Politician | Est. value | Share of portfolio |
|---|---|---|
Kevin HernR-OK · House | $831.9K | 3.50% |
Pete SessionsR-TX · House | $612.4K | 6.96% |
Kelly MorrisonD-MN · House | $447.2K | 1.99% |
Rick W. AllenR-GA · House | $274.4K | 3.74% |
Ron WydenD-OR · Senate | $216.1K | 0.73% |
Gilbert Ray Cisneros, Jr.D-CA · House | $200.1K | 0.46% |
Debbie DingellD-MI · House | $192.1K | 1.66% |
Robert P. Bresnahan, Jr.R-PA · House | $108.7K | 0.64% |
Markwayne MullinR-OK · Senate | $106K | 1.03% |
Kathy E. ManningD-NC · House | $76.4K | 0.28% |
David P. JoyceR-OH · House | $71.3K | 2.09% |
Jared MoskowitzD-FL · House | $53.2K | 1.11% |
Robert J. WittmanR-VA · House | $35.7K | 2.27% |
Marjorie Taylor GreeneR-GA · House | $16.6K | 0.31% |
Rick LarsenD-WA · House | $8.8K | 0.73% |
Josh GottheimerD-NJ · House | $8.8K | 0.03% |
Julie JohnsonD-TX · House | $8.8K | 0.05% |
John J. McGuire IIIR-VA · House | $8.8K | 1.06% |
James ComerR-KY · House | $8.8K | 1.52% |
Dan NewhouseR-WA · House | $8.2K | 0.91% |
Shelley Moore CapitoR-WV · Senate | $8.2K | 0.40% |
John BoozmanR-AR · Senate | $8K | 0.46% |
Alan ArmstrongR-OK · Senate | $7.7K | 0.15% |
Michael A. RulliR-OH · House | $549 | 0.06% |
Investors buying and selling
| Investor | Action | Shares now |
|---|---|---|
| Ray Dalio | Reduced −62% | 168,891 |
| National Pension Service (Korea) | Added +15% | 812,686 |
| George SorosPut | Reduced −75% | 25,000 |
| Barry Ritholtz | Added +8.1% | 18,876 |
| Jeremy Grantham | New | 1,388 |
| Mario Gabelli | Added +6.5% | 7,017 |
| Lee Ainslie | New | 275 |
| Tom Russo | Reduced −1.0% | 5,422 |
Politicians trading it
Latest Congress trades disclosed under the STOCK Act; amounts are ranges.
| Politician | Action | Traded |
|---|---|---|
Richard McCormickR-GA · House | Sold$1K–$15K | Jul 30, 2026disclosed Aug 14, 2026 |
Dan NewhouseSpouseR-WA · House | Bought$1K–$15K | Jul 10, 2026disclosed Jul 17, 2026 |
Alan ArmstrongR-OK · Senate | Bought$1K–$15K | Mar 27, 2026disclosed Jul 21, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Jan 30, 2026disclosed Feb 13, 2026 |
Markwayne MullinJointR-OK · Senate | Bought$15K–$50K | Dec 29, 2025disclosed Jan 16, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold part$1K–$15K | Dec 24, 2025disclosed Jan 12, 2026 |
Richard McCormickR-GA · House | Bought$1K–$15K | Nov 5, 2025disclosed Dec 9, 2025 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Oct 17, 2025disclosed Nov 18, 2025 |
Shelley Moore CapitoSpouseR-WV · Senate | Sold part$1K–$15K | Oct 17, 2025disclosed Nov 4, 2025 |
John BoozmanJointR-AR · Senate | Bought$1K–$15K | Oct 9, 2025disclosed Nov 15, 2025 |
Val T. HoyleSpouseD-OR · House | Sold$1K–$15K | Sep 23, 2025disclosed Oct 10, 2025 |
Lisa C. McClainSpouseR-MI · House | Sold$1K–$15K | Jul 10, 2025disclosed Aug 13, 2025 |
Lisa C. McClainSpouseR-MI · House | Bought$1K–$15K | Jun 17, 2025disclosed Aug 13, 2025 |
Lisa C. McClainSpouseR-MI · House | Sold part$1K–$15K | Jun 9, 2025disclosed Aug 13, 2025 |
Jefferson ShreveR-IN · House | Sold$100K–$250K | May 12, 2025disclosed Jun 22, 2025 |
Bruce WestermanR-AR · House | Sold$1K–$15K | Apr 21, 2025disclosed May 12, 2025 |
Jefferson ShreveR-IN · House | Sold part$15K–$50K | Mar 31, 2025disclosed Apr 11, 2025 |
Greg LandsmanJointD-OH · House | Sold$15K–$50K | Mar 27, 2025disclosed Apr 8, 2025 |
Greg LandsmanSpouseD-OH · House | Sold$1K–$15K | Mar 27, 2025disclosed Apr 8, 2025 |
Greg LandsmanJointD-OH · House | Sold$1K–$15K | Mar 27, 2025disclosed Apr 8, 2025 |
Marjorie Taylor GreeneR-GA · House | Bought$1K–$15K | Mar 17, 2025disclosed Mar 19, 2025 |
Bruce WestermanR-AR · House | Bought$1K–$15K | Mar 3, 2025disclosed Apr 16, 2025 |
Greg LandsmanJointD-OH · House | Sold part$1K–$15K | Feb 26, 2025disclosed Mar 5, 2025 |
Scott FranklinR-FL · House | Sold$50K–$100K | Jan 28, 2025disclosed Mar 18, 2025 |
Scott FranklinSpouseR-FL · House | Sold$1K–$15K | Jan 28, 2025disclosed Mar 18, 2025 |
Scott FranklinR-FL · House | Sold$1K–$15K | Jan 28, 2025disclosed Mar 18, 2025 |
James ComerR-KY · House | Bought$1K–$15K | Jan 2, 2025disclosed Jan 10, 2025 |
James ComerR-KY · House | Bought$1K–$15K | Jan 2, 2025disclosed Jan 10, 2025 |
Lisa C. McClainSpouseR-MI · House | Bought$1K–$15K | Dec 11, 2024disclosed Aug 13, 2025 |
Marjorie Taylor GreeneR-GA · House | Bought$1K–$15K | Nov 25, 2024disclosed Nov 27, 2024 |
Val T. HoyleSpouseD-OR · House | Bought$1K–$15K | Oct 29, 2024disclosed Sep 12, 2025 |
Marjorie Taylor GreeneR-GA · House | Bought$1K–$15K | Oct 4, 2024disclosed Oct 8, 2024 |
Scott FranklinSpouseR-FL · House | Bought$1K–$15K | Aug 7, 2024disclosed Jul 3, 2025 |
Scott FranklinR-FL · House | Sold part$15K–$50K | Aug 6, 2024disclosed Aug 20, 2024 |
Scott FranklinR-FL · House | Sold part$1K–$15K | Aug 1, 2024disclosed Aug 20, 2024 |
Kathy E. ManningSpouseD-NC · House | Bought$1K–$15K | Jul 2, 2024disclosed Aug 16, 2024 |
Marjorie Taylor GreeneR-GA · House | Bought$1K–$15K | Jun 24, 2024disclosed Jun 27, 2024 |
Greg LandsmanJointD-OH · House | Bought$1K–$15K | May 15, 2024disclosed Aug 14, 2024 |
Pete SessionsSpouseR-TX · House | Bought$1K–$15K | Jan 31, 2024disclosed Feb 29, 2024 |
Kathy E. ManningSpouseD-NC · House | Bought$15K–$50K | Jan 23, 2024disclosed Feb 6, 2024 |