Seagate Technology Holdings STX Institutional Ownership

NASDAQ STX

$794.65 -55.35 (-6.51%)

As of: Aug 24, 2026 · 3:59 PM EDT

Institutions by Trading Activity

1,423 Institutions

Increased 784 55.1%

Unchanged 158 11.1%

Reduced 481 33.8%

Ownership Statistics

13F · as of 31 Mar, 2026

Institutional Ownership

86.20%

▼-3.51 pp QoQ

Shares Held by Institutions

186.20Mn

of 216.00Mn outstanding

▲+17.04% QoQ

Shares Outstanding

216.00Mn

29.80Mn held outside 13F filers

Institutional Investors

1,423

filed 13F for Mar 2026

▲+175 vs prior quarter

Net Shares Added (QoQ)

+27.11Mn

accumulated since last quarter

Value of Holdings

$168.26Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 31 Mar, 2026

Seagate Technology Holdings plc (NASDAQ:STX) has 1,423 institutional investors that have filed 13F reports for the period ending March 2026.

Collectively, these holders controlled 86.2% of Seagate Technology Holdings's outstanding shares in March 2026, down from 89.7% in December 2025.
Their total shares held in STX increased 17.04% from the prior quarter, while the number of investors in Seagate Technology Holdings increased 79.22% year over year.
Of these 1,423 funds, 784 grew their exposure to Seagate Technology Holdings, 481 cut back, and 158 maintained positions.
Institutional investors collectively held 186.2Mn shares in Seagate Technology Holdings as of March 2026, up by 27.11Mn shares quarter on quarter, and down 21.02Mn shares year over year.
BlackRock, Inc. holds the largest position in STX at 14.27Mn shares as of March 31, 2026, or 6.61% of shares outstanding.
The largest buyers of Seagate Technology Holdings for the quarter ending March 2026 were VANGUARD CAPITAL MANAGEMENT LLC (14.16Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (11.09Mn), FMR LLC (4.42Mn), Janus Henderson Group Plc (1.91Mn), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (1.8Mn).
Top sellers of STX stock for the quarter ending March 2026 included Sanders Capital, LLC (4.28Mn), Goldman Sachs Group Inc (1.94Mn), BlackRock, Inc. (1.84Mn), DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main (1.8Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.76Mn).
Per Business Quant data, the top 10 holders of Seagate Technology Holdings for the quarter ending March 2026 are BlackRock, Inc. (14.27Mn), VANGUARD CAPITAL MANAGEMENT LLC (14.16Mn), Sanders Capital, LLC (12.9Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (11.09Mn), State Street Corp (9.32Mn), FMR LLC (8.18Mn), Jpmorgan Chase & Co (6.66Mn), Capital Research Global Investors (5.74Mn), GEODE CAPITAL MANAGEMENT, LLC (5.06Mn), Morgan Stanley (4.76Mn).

Form 13F Holdings

1,423 Institutional Holders

Report period 31 Mar, 2026

Total shares held 186.20Mn

Of outstanding 86.20%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	14,274,083	6.61%	▼1,842,843	-11.43%	$5.59Bn
2	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	14,155,673	6.55%	▲14,155,673	0.00%	$5.55Bn
3	Sanders Capital, LLC	0001508097	12,897,201	5.97%	▼4,283,691	-24.93%	$5.05Bn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	11,094,908	5.14%	▲11,094,908	0.00%	$4.35Bn
5	State Street Corp	0000093751	9,321,632	4.32%	▼49,173	-0.52%	$3.66Bn
6	FMR LLC	0000315066	8,176,918	3.79%	▲4,417,259	+117.49%	$3.20Bn
7	Jpmorgan Chase & Co	0000019617	6,659,239	3.08%	▼338,736	-4.84%	$2.41Bn
8	Capital Research Global Investors	0001422848	5,736,070	2.66%	▲1,224,081	+27.13%	$2.25Bn
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	5,060,828	2.34%	▲164,013	+3.35%	$1.98Bn
10	Morgan Stanley	0000895421	4,759,312	2.20%	▼558,204	-10.50%	$1.86Bn
11	WCM INVESTMENT MANAGEMENT, LLC	0001061186	4,346,852	2.01%	▼808,020	-15.67%	$1.58Bn
12	DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	0001694217	3,620,072	1.68%	▼1,796,170	-33.16%	$1.42Bn
13	Goldman Sachs Group Inc	0000886982	3,573,790	1.65%	▼1,937,172	-35.15%	$1.40Bn
14	Franklin Resources Inc	0000038777	3,518,195	1.63%	▼507,931	-12.62%	$1.38Bn
15	Bank Of America Corp /De/	0000070858	3,380,440	1.57%	▼900,165	-21.03%	$1.32Bn
16	Invesco Ltd.	0000914208	2,599,850	1.20%	▲40,925	+1.60%	$1.02Bn
17	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0000912938	2,536,122	1.17%	▲527,606	+26.27%	$1.01Bn
18	Janus Henderson Group Plc	0001274173	1,935,056	0.90%	▲1,910,698	+7,844.23%	$757.97Mn
19	Northern Trust Corp	0000073124	1,896,993	0.88%	▼3,639	-0.19%	$743.17Mn
20	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	0000921739	1,804,383	0.84%	▲1,799,482	+36,716.63%	$706.89Mn

Showing 1 to 20 of 1,423 holders