PRIMECAP MANAGEMENT CO/CA/

Position in STX — Seagate Technology Holdings plc

CIK 763212 PASADENA, CA

Position in STX

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$182,169,805

+$91,934,941 QoQ

Shares Held

188,777

-18.0% QoQ

Ownership

0.083%

of shares outstanding

% of Portfolio

0.11%

of 13F equity value

Holder Rank

#118

of 1,943 holders

Holding Since

Dec 2022

15 quarters on record

Voting authority Sole 97% Shared 0% None 3%

Technology · as of Jun 30, 2026

PRIMECAP MANAGEMENT CO/CA/ holds $1,226,330,245 across 6 Computer Hardware names. STX ranks #3 (14.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	HPQ	Hp Inc	24,885,325	$545,984,030
2	WDC	Western Digital Corp	516,440	$329,860,556
3	STX	Seagate Technology Holdings plc This page	188,777	$182,169,805
4	DELL	Dell Technologies Inc.	381,700	$164,688,282
5	ANET	Arista Networks, Inc.	16,000	$2,718,080
6	SNDK	Sandisk Corp	400	$909,492

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$182,169,805	188,777	-18.0%	Shares	Sole	2026-08-14
2026-03-31	$90,234,864	230,332	-40.1%	Shares	Sole	2026-05-11
2025-12-31	$105,827,419	384,282	-41.3%	Shares	Sole	2026-02-11
2025-09-30	$154,514,725	654,557	-33.4%	Shares	Sole	2025-11-12
2025-06-30	$141,906,266	983,207	+18.4%	Shares	Sole	2025-08-11
2025-03-31	$70,547,152	830,455	+9.0%	Shares	Sole	2025-05-09
2024-12-31	$65,781,598	762,155	+26.7%	Shares	Sole	2025-02-10
2024-09-30	$65,873,532	601,420	+3.3%	Shares	Sole	2024-11-08
2024-06-30	$60,133,604	582,295	+6.5%	Shares	Sole	2024-08-09
2024-03-31	$50,875,087	546,750	+38.9%	Shares	Sole	2024-05-14
2023-12-31	$33,605,900	393,650	+40.2%	Shares	Sole	2024-02-09
2023-09-30	$18,512,165	280,700	+2.2%	Shares	Sole	2023-11-13
2023-06-30	$16,995,689	274,700	-1.8%	Shares	Sole	2023-08-11
2023-03-31	$18,493,764	279,700	+24.5%	Shares	Sole	2023-05-15
2022-12-31	$11,821,467	224,700	—	Shares	Sole	2023-02-13
No filing history on record for this holder in this stock.