Costco Wholesale Ownership | Who Owns Costco Wholesale?

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Costco Wholesale Ownership Summary

Costco Wholesale is owned by 73.25% institutional investors, 0.16% insiders, and 26.59% retail investors. Vanguard group is the largest institutional shareholder, holding 9.83% of COST shares. Vanguard MStar Total Stk Mkt Idx Invest is the top mutual fund, with 3.19% of its assets in Costco Wholesale shares.

COST Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Costco Wholesale	73.25%	0.16%	26.59%
Sector	Consumer Defensive Stocks	52.60%	17.13%	30.27%
Industry	Discount Stores Stocks	86.54%	6.05%	7.41%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	43.62M	9.83%	$37.62B
Blackrock funding, inc. /de	34.20M	7.70%	$32.00B
Blackrock	33.19M	7.48%	$28.21B
Vanguard capital management	28.98M	6.53%	$27.11B
State street	18.38M	4.14%	$17.20B
Invesco	13.99M	3.15%	$13.09B
Geode capital management	10.63M	2.39%	$9.90B
Morgan stanley	10.22M	2.30%	$9.56B
Bank of america corp /de/	7.25M	1.63%	$6.78B
Norges bank	6.47M	1.46%	$6.06B

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Emerald advisors	622.53K	73.18%	$582.36M
I.g.y.	94.33K	35.99%	$88.24M
Worldly partners management	43.27K	33.07%	$40.48M
Steginsky capital	135.27K	18.99%	$126.54M
Norman fields, gottscho capital management	57.20K	16.21%	$53.51M
Greenbrier partners capital management	221.73K	15.54%	$207.42M
Garrison bradford & associates	9.40K	9.54%	$8.80M
Ocean capital management	54.90K	9.52%	$51.36M
Provident trust	470.40K	9.22%	$440.05M
Conway capital management	21.82K	9.09%	$20.41M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	6.47M	0.60%	6.47M
Invesco	13.99M	1.04%	4.67M
Sixth street partners management company	3.63M	0.45%	3.63M
Org wealth partners	2.50M	0.39%	2.50M
Sg americas securities	1.77M	0.93%	955.93K

Top Sellers

Holder	Shares	% Assets	Change
Diamant asset management	6.75K	4.29%	-6.72M
Blackrock funding, inc. /de	34.20M	0.48%	-744.21K
Fmr	6.16M	0.25%	-555.05K
Price t rowe associates inc /md/	2.06M	0.19%	-512.52K
Amundi	2.42M	0.55%	-414.56K

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	6.47M	0.60%	6.47M	$6.06B
Sixth street partners management company	3.63M	0.45%	3.63M	$3.40B
Axa investment managers	390.39K	0.98%	390.39K	$361.36M
Cibc world markets	192.33K	0.80%	192.33K	$165.85M
Holocene advisors, lp	142.64K	0.30%	142.64K	$133.43M

Sold Out

Holder	Change
Bridge generations wealth management	-1.00
Usa financial portformulas	-2.00
Sugar maple asset management	-4.00
Sanctuary wealth management	-4.00
Mfa wealth advisors	-5.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	4,293	-1.36%	325,183,462	2.92%	73	1.45%	1,908	-9.14%	1,697	4.17%
Mar 31, 2026	4,218	0.52%	298,971,950	-3.17%	67	1.39%	2,040	3.29%	1,578	-4.48%
Dec 31, 2025	3,609	-10.42%	255,546,837	-13.82%	57	1.29%	1,640	-8.99%	1,479	-6.98%
Sep 30, 2025	3,882	-4.69%	294,540,771	-3.79%	66	1.40%	1,740	-9.70%	1,528	1.06%
Jun 30, 2025	3,974	-0.85%	305,715,619	2.51%	68	1.53%	1,883	5.31%	1,476	-11.56%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard MStar Total Stk Mkt Idx Invest	14.13M	3.19%	39.83K
Vanguard Total Stock Mkt Idx Inv	14.09M	3.18%	-40.84K
Vanguard Morn Total Stk Mkt Idx Investor	14.09M	3.18%	-40.84K
Vanguard US Total Market Shares ETF	14.05M	3.17%	-1.51K
Vanguard 500 Index Investor	11.64M	2.63%	122.01K
Invesco QQQ Trust	9.19M	2.07%	-116.57K
iShares Core S&P 500 ETF	5.99M	1.35%	9.55K
Fidelity 500 Index	5.69M	1.28%	11.11K
SPDR® S&P 500 ETF	5.52M	1.24%	-72.34K
State Street® SPDR® S&P 500® ETF	5.47M	1.23%	4.63K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jun 23, 2026	DENMAN KENNETH D	-	Sell	$847.35K
Apr 01, 2026	Frates Caton	Executive Vice President	Sell	$695.10K
Mar 09, 2026	Adamo Claudine	Executive Vice President	Sell	$732.21K
Jan 21, 2026	Jones Teresa A.	Executive Vice President	Sell	$838.32K
Jan 16, 2026	DECKER SUSAN L	-	Sell	$437.39K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	2
2026 Q1	-	5
2025 Q4	-	5
2025 Q3	-	4
2025 Q2	-	5

COST Ownership FAQ

Who Owns Costco Wholesale?

Costco Wholesale shareholders are primarily institutional investors at 73.25%, followed by 0.16% insiders and 26.59% retail investors. The average institutional ownership in Costco Wholesale's industry, Discount Stores Stocks , is 86.54%, which Costco Wholesale falls below.

Who owns the most shares of Costco Wholesale?

Costco Wholesale’s largest shareholders are Vanguard group (43.62M shares, 9.83%), Blackrock funding, inc. /de (34.2M shares, 7.70%), and Blackrock (33.19M shares, 7.48%). Together, they hold 25.01% of Costco Wholesale’s total shares outstanding.

Does Blackrock own Costco Wholesale?

Yes, BlackRock owns 7.48% of Costco Wholesale, totaling 33.19M shares as of Jun 2024. This represents 0.64% of BlackRock's total assets, with a market value of 28.21B$. In the last quarter, BlackRock increased its holdings by 835.17K shares, a 2.58% change.

Who is Costco Wholesale’s biggest shareholder by percentage of total assets invested?

Emerald advisors is Costco Wholesale’s biggest shareholder by percentage of total assets invested, with 73.18% of its assets in 622.53K Costco Wholesale shares, valued at 582.36M$.

Who is the top mutual fund holder of Costco Wholesale shares?

Vanguard MStar Total Stk Mkt Idx Invest is the top mutual fund holder of Costco Wholesale shares, with 3.19% of its total shares outstanding invested in 14.13M Costco Wholesale shares.

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