Costco (1COST) Ownership - Who Owns Costco?

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Costco (1COST) Ownership Overview

0.09% Insiders

16.02%

Mutual Funds

0.29% Other Institutional Investors

25.06% ETFs

58.53% Public Companies and

Individual Investors

The ownership structure of Costco (IT:1COST) stock is a mix of institutional, retail, and individual investors. Approximately 41.38% of the company’s stock is owned by Institutional Investors, 0.09% is owned by Insiders, and 58.53% is owned by Public Companies and Individual Investors.

The ownership structure of Costco (IT:1COST) stock is a mix of institutional, retail, and individual investors. Approximately 16.32% of the company’s stock is owned by Institutional Investors, 0.09% is owned by Insiders, and 25.06% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date	Name	Activity	Value
Apr 01, 2026	Caton Frates	xxxxxxxxxxxxx	$695100
Mar 11, 2026	Claudine Adamo	xxxxxxxxxxxxx	$732205
Jan 23, 2026	Teresa A. Jones	xxxxxxxxxxxxx	$838313
Jan 20, 2026	Susan Decker	xxxxxxxxxxxxx	$437390

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Recent Hedge Fund Trading Activity

Date	Firm	Activity	Value
Dec 31, 2025	Manning & Napier Advisors Llc	xxxxxxxxxxxxx	$3449
Dec 31, 2025	Elkhorn Partners Limited Partnership	xxxxxxxxxxxxx	$129351
Dec 31, 2025	Martin Investment Management, Llc	xxxxxxxxxxxxx	$255252
Dec 31, 2025	Arq Wealth Advisors, Llc	xxxxxxxxxxxxx	$305268

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Top Shareholders

Holder	# of Shares	Type	% Holding	Value
	37,557,832	Institution	8.47%	37,420,144,988
	30,312,712	Institution	6.83%	30,201,585,598
	20,922,711	Institution	4.72%	20,846,008,341
	16,635,684	Institution	3.75%	16,574,697,582
	15,116,781	Institution	3.41%	15,061,362,881
	7,707,187	Institution	1.74%	7,678,932,452
	6,972,991	Institution	1.57%	6,947,428,015
Ken Fisher	3,176,286	Institution	0.72%	3,164,641,736
	2,755,009	Institution	0.62%	2,744,909,137
	2,429,031	Institution	0.55%	2,420,126,172

Top Mutual Fund Holders

# of Shares	Type	% Holding	Value
30,312,712	Institution	6.83%	30,201,585,598
7,707,187	Institution	1.74%	7,678,932,452
2,755,009	Institution	0.62%	2,744,909,137
2,429,031	Institution	0.55%	2,420,126,172
1,881,546	Institution	0.42%	1,874,648,252
1,781,223	Institution	0.40%	1,774,693,036
1,637,745	Institution	0.37%	1,631,741,027
1,432,859	Institution	0.32%	1,427,606,139
1,239,426	Institution	0.28%	1,234,882,264
1,080,216	Institution	0.24%	1,076,255,928

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value

FAQ

Who Owns Costco (IT:1COST)?

According to the latest TipRanks data, approximately 0.29% of the company's stock is held by institutional investors, 0.09% is held by insiders, and 58.53% is held by retail investors.

What percentage of Costco (IT:1COST) stock is held by institutional investors?

According to the latest TipRanks data, approximately 0.29% of Costco (IT:1COST) stock is held by institutional investors.

What percentage of Costco (IT:1COST) stock is held by retail investors?

According to the latest TipRanks data, approximately 58.53% of Costco (IT:1COST) stock is held by retail investors.

Who owns the most shares of Costco (IT:1COST)?

Vanguard owns the most shares of Costco (IT:1COST).

What is the significance of the ownership structure for a publicly traded company?

The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.