MASSACHUSETTS FINANCIAL SERVICES CO /MA/

Position in STX — Seagate Technology Holdings plc

CIK 912938 Boston, MA

Position in STX

as of Jun 30, 2026 · filed Aug 3, 2026 Compact

Position Value

$2,470,666,340

+$1,477,115,188 QoQ

Shares Held

2,560,276

+1.0% QoQ

Ownership

1.13%

of shares outstanding

% of Portfolio

0.85%

of 13F equity value

Holder Rank

#15

of 1,934 holders

Holding Since

Sep 2022

10 quarters on record

Voting authority Sole 79% Shared 17% None 4%

Technology · as of Jun 30, 2026

MASSACHUSETTS FINANCIAL SERVICES CO /MA/ holds $4,842,509,190 across 7 Computer Hardware names. STX ranks #1 (51.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	STX	Seagate Technology Holdings plc This page	2,560,276	$2,470,666,340
2	ANET	Arista Networks, Inc.	9,725,196	$1,652,116,292
3	SNDK	Sandisk Corp	249,714	$567,782,210
4	WDC	Western Digital Corp	178,373	$113,930,398
5	CRSR	Corsair Gaming, Inc.	2,017,225	$19,506,565
6	DELL	Dell Technologies Inc.	40,677	$17,550,497
7	QBTS	D-Wave Quantum Inc.	39,887	$956,888

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,470,666,340	2,560,276	+1.0%	Shares	Defined	2026-08-03
2026-03-31	$993,551,152	2,536,122	+26.3%	Shares	Defined	2026-05-14
2025-12-31	$553,125,217	2,008,516	+1510.1%	Shares	Sole	2026-01-22
2025-09-30	$29,447,775	124,747	-93.8%	Shares	Sole	2025-10-29
2023-12-31	$172,507,754	2,020,707	-16.2%	Shares	Sole	2024-02-08
2023-09-30	$158,950,249	2,410,163	+24.3%	Shares	Sole	2023-11-08
2023-06-30	$120,001,255	1,939,571	-4.6%	Shares	Sole	2023-08-09
2023-03-31	$134,481,731	2,033,904	+0.7%	Shares	Sole	2023-05-10
2022-12-31	$106,213,905	2,018,892	+83.0%	Shares	Sole	2023-02-13
2022-09-30	$58,715,083	1,103,045	—	Shares	Sole	2022-11-09
No filing history on record for this holder in this stock.