Costco Wholesale Ownership | Who Owns Costco Wholesale?

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Costco Wholesale Ownership Summary

Costco Wholesale is owned by 67.34% institutional investors, 0.16% insiders, and 32.50% retail investors. Vanguard group is the largest institutional shareholder, holding 9.83% of COST shares. Vanguard Total Stock Mkt Idx Inv 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	67.34%	0.16%	32.50%
Sector	Consumer Defensive Stocks	33.57%	17.09%	49.33%
Industry	Discount Stores Stocks	49.76%	5.59%	44.65%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	43.62M	9.83%	$37.62B
Blackrock funding, inc. /de	34.95M	7.87%	$34.82B
Blackrock	33.19M	7.48%	$28.21B
State street	18.15M	4.09%	$18.09B
Geode capital management	10.66M	2.40%	$10.58B
Morgan stanley	9.90M	2.23%	$9.86B
Diamant asset management	6.73M	1.52%	$6.73B
Fmr	6.72M	1.51%	$6.69B
Norges bank	6.02M	1.36%	$5.20B
Northern trust	4.93M	1.11%	$4.91B

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Emerald advisors	622.53K	76.81%	$620.31M
Worldly partners management	49.87K	41.96%	$49.70M
I.g.y.	94.33K	39.95%	$93.99M
Steginsky capital	135.43K	22.30%	$134.95M
Norman fields, gottscho capital management	57.19K	18.84%	$56.98M
Greenbrier partners capital management	222.47K	17.07%	$221.68M
Chapman investment management	14.48K	11.90%	$14.43M
Garrison bradford & associates	10.10K	11.39%	$10.06M
Ocean capital management	54.66K	11.19%	$54.46M
Unio capital	51.11K	10.92%	$50.93M

Top Buyers

Holder	Shares	% Assets	Change
Diamant asset management	6.73M	4.90%	6.72M
Norges bank	6.02M	0.56%	6.02M
Vanguard fiduciary trust	2.56M	0.65%	2.56M
Capital investors	2.75M	0.64%	2.11M
Jpmorgan chase	4.04M	0.26%	1.06M

Top Sellers

Holder	Shares	% Assets	Change
Capital world investors	2.03M	0.28%	-1.90M
Actiam	187.24K	1.82%	-1.60M
Renaissance	19.46K	0.03%	-673.55K
Assenagon asset management	509.69K	0.77%	-627.75K
Bnp paribas arbitrage, snc	553.31K	0.27%	-549.43K

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	6.02M	0.56%	6.02M	$5.20B
Vanguard fiduciary trust	2.56M	0.65%	2.56M	$2.55B
Vanguard global advisers	971.14K	0.52%	971.14K	$967.68M
Vanguard asset management	772.38K	0.66%	772.38K	$769.62M
Axa investment managers	390.39K	0.98%	390.39K	$361.36M

Sold Out

Holder	Change
Delos wealth advisors	-1.00
Bridge generations wealth management	-1.00
Horizon financial services	-2.00
Usa financial portformulas	-2.00
William b. walkup & associates	-3.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Mar 31, 2025	41	-98.97%	1,611,038	-99.47%	-	0.01%	15	-99.24%	19	-98.68%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	14.14M	3.19%	45.14K
Vanguard US Total Market Shares ETF	14.05M	3.17%	-1.51K
Vanguard 500 Index Investor	11.51M	2.59%	206.99K
Invesco QQQ Trust	9.50M	2.14%	69.84K
iShares Core S&P 500 ETF	5.74M	1.29%	16.84K
Fidelity 500 Index	5.67M	1.28%	28.54K
SPDR® S&P 500 ETF	5.52M	1.24%	-72.34K
SPDR® S&P 500® ETF Trust	5.38M	1.21%	-28.19K
SPDR® S&P 500® ETF	5.36M	1.21%	66.03K
State Street® SPDR® S&P 500® ETF	5.28M	1.19%	-5.68K

Recent Insider Transactions

Date	Name	Role	Activity	Value
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
Jan 14, 2026	Klauer James C	Executive Vice President	Sell	$1.41M

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	1
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 67.34%, followed by 0.16% insiders and 32.50% retail investors. The average institutional ownership in Costco Wholesale's industry, Discount Stores Stocks , is 49.76%, which Costco Wholesale exceeds.

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 (34.95M shares, 7.87%), and Blackrock (33.19M shares, 7.48%). Together, they hold 25.17% 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 76.81% of its assets in 622.53K Costco Wholesale shares, valued at 620.31M$.

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

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Costco Wholesale shares, with 3.19% of its total shares outstanding invested in 14.14M Costco Wholesale shares.

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