Who holds COST (COSTCO WHOLESALE CORP)?

COST

COSTCO WHOLESALE CORP

Data as of 2026 Q1 (03-31) · 13F snapshot

Summary

COSTCO WHOLESALE CORP (COST) is held by 10 tracked hedge-fund managers, a combined reported value of ~$5.93B; the largest are Ken Griffin, Warren Buffett, Ken Griffin. This quarter: 1 added, 5 trimmed. 20 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.

Attention · HighThis quarter · Cooling

Gurus holding10

Congress trades20

Price$935.03vs quarter-end-6.16%

Sectors1

This quarter's moves

New0

Added1

Trimmed / sold5

Top holderKen Griffin

Ken GriffinCALL—

Value $1.41B— of portfolio1,413,0002026 Q1

Warren BuffettHold

Value $1.31B0.6% of portfolio4,333,3632020 Q2

Ken GriffinPUT—

Value $1.00B— of portfolio1,007,3002026 Q1

Bill GatesHold

Value $613.57M3.5% of portfolio6,128,0002012 Q3

Izzy EnglanderPUT—

Value $399.77M— of portfolio401,2002026 Q1

Izzy EnglanderCALL—

Value $144.08M— of portfolio144,6002026 Q1

Steven CohenCALL—

Value $77.32M— of portfolio77,6002026 Q1

Steven CohenPUT—

Value $50.52M— of portfolio50,7002026 Q1

George SorosPUT—

Value $22.16M— of portfolio25,0002024 Q3

Investor	Period	Value	Shares	% of portfolio	Action
Ken GriffinCALL	2026 Q1	$1.41B	1,413,000	—	—
Warren Buffett	2020 Q2	$1.31B	4,333,363	0.6%	Hold
Ken GriffinPUT	2026 Q1	$1.00B	1,007,300	—	—
Bill Gates	2012 Q3	$613.57M	6,128,000	3.5%	Hold
Izzy EnglanderPUT	2026 Q1	$399.77M	401,200	—	—
Izzy EnglanderCALL	2026 Q1	$144.08M	144,600	—	—
Steven CohenCALL	2026 Q1	$77.32M	77,600	—	—
Steven CohenPUT	2026 Q1	$50.52M	50,700	—	—
George SorosPUT	2024 Q3	$22.16M	25,000	—	—

Insider Trading

Officers · directors · Form 4

Jeffrey S Raikes
Director
Sell
5,249 @ $0.00Traded 2026-07-10Filed 2026-07-14
Kenneth D Denman
Director
Sell$847.3K
885 @ $957.45Traded 2026-06-23Filed 2026-06-25
Caton Frates
Executive Vice President
Sell$695.1K
700 @ $993.00Traded 2026-04-01Filed 2026-04-01
Sarah Catherine George
Executive Vice President
Buy$636.5K
642 @ $991.21Traded 2026-03-12Filed 2026-03-13
Gary Millerchip
Executive Vice President
Sell$1.15M
1,154 @ $992.23Traded 2026-03-11Filed 2026-03-13
Claudine Adamo
Executive Vice President
Sell$732.2K
730 @ $1003Traded 2026-03-09Filed 2026-03-11

Insider transactions are public SEC Form 4 disclosures (company officers, directors, 10% owners), for research only — not investment advice.

Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.