Costco Wholesale Corp

COST

Exchange: Nasdaq
Industry: Retail-Variety Stores
SEC CIK: 0000909832

SEC filings (opens in a new tab)

In the last 90 days, Costco Wholesale Corp insiders filed 0 open-market purchases and 2 sales; 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, Q3 2026

Institutional positions in Costco Wholesale Corp as of Sep 30, 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

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders: 44; +3 vs. Q2 2026
Shares held: 311.9K; −8.82K (−2.7%) vs. Q2 2026
Total value: $284.0M; −$16.1M (−5.3%) vs. Q2 2026
New holders: 3; 9 more added
Sold out: 0; 25 more reduced

4,220 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: 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.

Institutional holders

Value held

Institutions holding COST and their total value by quarter
Quarter	Holders	Value
Q2 2026	4,261	$301.8B
Q1 2026	4,274	$311.5B
Q4 2025	4,138	$272.0B
Q3 2025	3,941	$274.4B
Q2 2025	4,011	$302.3B
Q1 2025	3,952	$287.8B
Q4 2024	3,941	$279.6B
Q3 2024	3,590	$266.7B
Q2 2024	3,526	$258.3B
Q1 2024	3,419	$222.0B
Q4 2023	3,343	$201.0B
Q3 2023	3,077	$169.9B
Q2 2023	3,041	$162.0B
Q1 2023	2,943	$149.2B
Q4 2022	2,938	$137.2B
Q3 2022	2,825	$141.6B
Q2 2022	2,784	$143.4B
Q1 2022	2,862	$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, Q3 2026

Shares, value and share of portfolio for each institution holding Costco Wholesale Corp; share changes are against Q2 2026.

Institutions holding COST in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
BIP Wealth, LLC	–	–	–	–	Not filed
Oxford Financial Group Ltd	–	–	–	–	Not filed
Sand Hill Global Advisors, LLC	–	–	–	–	Not filed
Kentucky Farm Bureau Mutual Insurance Co	–	–	–	–	Not filed
K.J. Harrison & Partners Inc	–	–	–	–	Not filed
Core Wealth Partners LLC	–	–	–	–	Not filed
RMR Capital Management, LLC	–	–	–	–	Not filed
Counterweight Ventures, LLC	–	–	–	–	Not filed
Werlinich Asset Management, LLC	–	–	–	–	Not filed
Game Plan Financial Advisors, LLC	–	–	–	–	Not filed
Capital Planning LLC	–	–	–	–	Not filed
Enhancing Capital LLC	–	–	–	–	Not filed
Beaton Management Co. Inc.	–	–	–	–	Not filed
RD Lewis Holdings, Inc.	–	–	–	–	Not filed
Verde Capital Management	–	–	–	–	Not filed
Hilltop National Bank	–	–	–	–	Not filed
111 Capital	–	–	–	–	Not filed
71 West Capital Partners	–	–	–	–	Not filed
Arjuna Capital	–	–	–	–	Not filed
Winch Advisory Services, LLC	–	–	–	–	Not filed
Cornerstone Planning, LLC	–	–	–	–	Not filed
Cyndeo Wealth Partners, LLC	–	–	–	–	Not filed
Nautilus Advisors LLC	–	–	–	–	Not filed
Henson-Edgewater Management, LLC	–	–	–	–	Not filed
Ellsworth Advisors, LLC	–	–	–	–	Not filed
Crawford Investment Counsel Inc	–	–	–	–	Not filed
T. Rowe Price Investment Management, Inc.	–	–	–	–	Not filed
Condor Capital Management	–	–	–	–	Not filed
Oxler Private Wealth LLC	–	–	–	–	Not filed
Armis Advisers, LLC	–	–	–	–	Not filed
Aster Capital Management (DIFC) Ltd	–	–	–	–	Not filed
Forum Financial Management, LP	–	–	–	–	Not filed
Glen Eagle Advisors, LLC	–	–	–	–	Not filed
Princeton Capital Management LLC	–	–	–	–	Not filed
Catalyst Financial Partners LLC	–	–	–	–	Not filed
Ballast, Inc.	–	–	–	–	Not filed
Shepherd Financial Partners LLC	–	–	–	–	Not filed
Roehl & Yi Investment Advisors, LLC	–	–	–	–	Not filed
Deltec Asset Management LLC	–	–	–	–	Not filed
Anchor Bay Capital, Inc.	–	–	–	–	Not filed
Northside Capital Management, LLC	–	–	–	–	Not filed
Prosperity Financial Group, Inc.	–	–	–	–	Not filed
Parallax Volatility Advisers, L.P.	–	–	–	–	Not filed
Argo Wealth Advisory, LLC	–	–	–	–	Not filed
Waterloo Capital, L.P.	–	–	–	–	Not filed
Accurate Wealth Management, LLC	–	–	–	–	Not filed
IFC Advisors LLC	–	–	–	–	Not filed
Betterment LLC	–	–	–	–	Not filed
Burling Wealth Partners, LLC	–	–	–	–	Not filed
Corsicana & Co.	–	–	–	–	Not filed
TownSquare Capital, LLC	–	–	–	–	Not filed
Keebeck Wealth Management, LLC	–	–	–	–	Not filed
Garner Asset Management Corp	–	–	–	–	Not filed
Decatur Capital Management, Inc.	–	–	–	–	Not filed
44 Wealth Management LLC	–	–	–	–	Not filed
Connable Office Inc	–	–	–	–	Not filed
Lewis Asset Management, LLC	–	–	–	–	Not filed
O'Brien Greene & Co. Inc	–	–	–	–	Not filed
Obermeyer Wood Investment Counsel, LLLP	–	–	–	–	Not filed
Allred Capital Management, LLC	–	–	–	–	Not filed
Gardner Russo & Quinn LLCSuperinvestorGardner Russo & Quinn	–	–	–	–	Not filed
Peak Financial Advisors LLC	–	–	–	–	Not filed
Arrow Financial Corp	–	–	–	–	Not filed
Accuvest Global Advisors	–	–	–	–	Not filed
Roman Butler Fullerton & Co	–	–	–	–	Not filed
Ak Global Asset Management, LLC	–	–	–	–	Not filed
Brown, Lisle/Cummings, Inc.	–	–	–	–	Not filed
Nadler Financial Group, Inc.	–	–	–	–	Not filed
Legacy Capital Wealth Management, LLC	–	–	–	–	Not filed
Caisse des Depots Et Consignations	–	–	–	–	Not filed
Fjell Capital, LLC	–	–	–	–	Not filed
Kingsman Wealth Management, Inc.	–	–	–	–	Not filed
Am Investment Strategies LLC	–	–	–	–	Not filed
MeadowBrook Investment Advisors LLC	–	–	–	–	Not filed
Semper Augustus Investments Group LLCSuperinvestorSemper Augustus	–	–	–	–	Not filed
Klingman & Associates, LLC	–	–	–	–	Not filed
HM Payson & Co	–	–	–	–	Not filed
Ameriflex Group, Inc.	–	–	–	–	Not filed
B & T Capital Management DBA Alpha Capital Management	–	–	–	–	Not filed
Altshuler Shaham Ltd	–	–	–	–	Not filed
Inscription Capital, LLC	–	–	–	–	Not filed
BCM Advisors, LLC	–	–	–	–	Not filed
Money Concepts Capital Corp	–	–	–	–	Not filed
Evergreen Wealth Partners LLC	–	–	–	–	Not filed
Eads & Heald Wealth Management	–	–	–	–	Not filed
SCS Capital Management LLC	–	–	–	–	Not filed
Fairbanks Capital Management, Inc.	–	–	–	–	Not filed
Westhampton Capital, LLC	–	–	–	–	Not filed
Benedict Financial Advisors Inc	–	–	–	–	Not filed
Pointe Capital Management LLC	–	–	–	–	Not filed
Aft, Forsyth & Company, Inc.	–	–	–	–	Not filed
Sax Wealth Advisors, LLC	–	–	–	–	Not filed
Independence Bank of Kentucky	–	–	–	–	Not filed
Beaumont Financial Advisors, LLC	–	–	–	–	Not filed
New Republic Capital, LLC	–	–	–	–	Not filed
Peloton Wealth Strategists	–	–	–	–	Not filed
Strategy Asset Managers LLC	–	–	–	–	Not filed
Strategic Investment Solutions, Inc.	–	–	–	–	Not filed
Elmwood Wealth Management, Inc.	–	–	–	–	Not filed
Armstrong, Fleming & Moore, Inc	–	–	–	–	Not filed