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Seagate Technology Holdings plc

STX
Exchange
Nasdaq
Industry
Computer Storage Devices
SEC CIK
0001137789

In the last 90 days, Seagate Technology Holdings plc insiders filed 0 open-market purchases and 34 sales; 1,973 institutions reported holding it in 13F filings for Q2 2026, worth $181.1B in total; 5 superinvestors hold it, including Lone Pine Capital and Tiger Global Management.

Q1 2026 vs. Q4 2025

How the institutions holding Seagate Technology Holdings plc changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of STX: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders1,279171,471+209
Shares194.4M30.1M190.3M+26.0M (+15.8%)
Value$53.5B$8.30B$74.2B+$29.0B (+64.1%)

17 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (311)

Institutions that held Seagate Technology Holdings plc at the end of Q1 2026 but not at the end of Q4 2025.

Showing the largest 100 of 311 by value.

Institutions new to STX in Q1 2026
InstitutionSharesValue% of portfolio
Vanguard Capital Management LLC14,155,673$5.55B0.14%
Vanguard Portfolio Management LLC11,094,908$4.35B0.23%
Vanguard Fiduciary Trust Co1,201,062$470.5M0.12%
Sands Capital Management, LLC531,892$208.4M0.82%
Vanguard Global Advisers, LLC477,174$186.9M0.10%
Vanguard Asset Management, Ltd376,308$147.4M0.13%
Anther Capital Ltd331,233$129.8M3.39%
TOMS Capital Investment Management LP331,000$129.7M8.52%
Palestra Capital Management LLC294,000$115.2M4.52%
HRT Financial LP229,531$89.9M0.22%
Vanguard Investments Australia, Ltd.108,605$42.5M0.12%
Keywise Capital Management (HK) Ltd102,784$40.3M6.79%
Tudor Investment Corp Et Al102,041$40.0M0.22%
Quadrature Capital Ltd97,594$38.2M0.45%
Ariose Capital Management Ltd96,600$37.8M25.41%
Capitolis Liquid Global Markets LLC96,586$37.8M0.24%
Artisan Partners Limited Partnership83,472$32.7M0.05%
Migdal Insurance & Financial Holdings Ltd.81,000$31.8M0.28%
Harvest Portfolios Group Inc.63,510$24.9M0.41%
Sora Investors LLC60,342$23.6M2.18%
Temasek Holdings (Private) Ltd58,104$22.8M0.08%
SEB Asset Management AB58,082$22.8M0.10%
Duquesne Family Office LLCSuperinvestorDuquesne Family Office50,700$19.9M0.68%
Zurich Insurance Group Ltd47,881$18.8M0.15%
Eurizon Capital SGR S.p.A.48,074$18.6M0.06%
Trexquant Investment LP45,493$17.8M0.13%
CIBC Bancorp USA Inc.42,842$16.8M0.02%
Attestor Capital Ltd39,222$15.4M4.05%
Ilmarinen Mutual Pension Insurance Co37,716$14.8M0.12%
UNICOM Systems, Inc.36,800$14.4M1.48%
Life Cycle Investment Partners Ltd36,520$14.3M0.09%
Andra AP-fonden32,687$12.8M0.16%
Lombard Odier Asset Management (Switzerland) SA28,910$11.3M0.43%
Night Squared LP27,037$10.6M1.56%
United Capital Management of KS, Inc.26,517$10.4M1.57%
Calamos Advisors LLC23,213$9.09M0.04%
CVFG LLC22,691$8.89M1.11%
Longaeva Partners L.P.21,502$8.42M0.41%
Cornerstone Advisors, LLC20,622$8.08M0.30%
TrimTabs Asset Management, LLC20,556$8.05M1.81%
Oribel Capital Management, LP20,200$7.91M1.20%
Tortoise Capital Advisors, L.L.C.18,988$7.44M0.08%
Mediolanum International Funds Ltd20,354$7.38M0.08%
Zevenbergen Capital Investments LLC18,500$7.25M0.21%
IMC-Chicago, LLC14,748$5.78M0.09%
Abn Amro Investment Solutions14,072$5.51M0.07%
Brevan Howard Capital Management LP13,794$5.40M0.06%
E Fund Management Co., Ltd.12,912$5.06M0.15%
Brighton Jones LLC12,442$4.87M0.11%
Katamaran Capital LLP11,623$4.55M4.05%
Trinity Legacy Partners, LLC8,035$4.29M0.93%
Y-Intercept (Hong Kong) Ltd10,832$4.24M0.08%
Gunderson Capital Management Inc.10,525$4.12M1.72%
Sharpepoint LLC10,392$4.07M2.43%
Alight Capital Management LP10,000$3.92M1.14%
Aptus Capital Advisors, LLC9,738$3.81M0.03%
Saudi Central Bank8,042$3.15M0.07%
Optimize Financial Inc7,943$3.11M1.53%
Fideuram - Intesa Sanpaolo Private Banking S.P.A.7,648$3.00M0.11%
Science & Technology Partners, L.P.7,240$2.84M0.74%
Procyon Private Wealth Partners, LLC6,599$2.59M0.13%
Greenup Street Wealth Management LLC6,462$2.53M0.36%
Plato Investment Management Ltd6,385$2.50M0.17%
Fortune Financial Advisors, LLC6,100$2.39M1.22%
Banque Transatlantique SA6,092$2.39M0.06%
Mizuho Markets Americas LLC6,032$2.36M0.07%
Advent Capital Management6,000$2.35M0.07%
Group One Trading, L.P.4,995$1.96M0.06%
Next Century Growth Investors LLC4,723$1.85M0.13%
Sumitomo Life Insurance Co4,544$1.78M0.04%
Kepler Cheuvreux (Suisse) SA4,358$1.71M0.11%
FACT Capital, LP4,356$1.71M1.13%
Diversify Wealth Management, LLC2,544$1.64M0.03%
Advisors Preferred, LLC4,012$1.57M0.23%
Main Management ETF Advisors, LLC3,940$1.54M0.06%
Kentucky Retirement Systems26,927$1.51M0.11%
Twin Tree Management, LP3,853$1.51M0.32%
USA Financial Portformulas Corp3,390$1.33M0.25%
LVW Advisors, LLC3,295$1.29M0.13%
Tounjian Advisory Partners, LLC3,272$1.28M0.46%
Dark Forest Capital Management LP3,264$1.28M0.11%
Bailard, Inc.3,166$1.24M0.03%
Arvest Investments, Inc.3,141$1.23M0.17%
Algert Global LLC3,134$1.23M0.02%
Bosman Wealth Management, LLC3,076$1.21M1.06%
Laurion Capital Management LP3,047$1.19M0.11%
HighVista Strategies LLC2,900$1.14M0.31%
Q3 Asset Management2,850$1.12M0.27%
Kingsman Wealth Management, Inc.2,642$1.04M0.58%
Pinnbrook Capital Management LP2,600$1.02M0.83%
Simplex Trading, LLC2,599$1.02M0.03%
Loomis Sayles & Co L P2,592$1.02M0.00%
Voloridge Investment Management, LLC2,358$923.8K0.00%
Weiss Asset Management LP2,289$896.7K0.02%
Evansbrook LLC2,276$891.6K0.60%
GeoWealth Management, LLC2,225$871.9K0.03%
FDx Advisors, Inc.2,208$865.0K0.28%
Strategy Asset Managers LLC2,055$805.1K0.13%
Gsa Capital Partners LLP1,999$783.0K0.05%
Centennial Wealth Advisory LLC1,915$749.9K0.18%

Sold out (102)

Institutions that held Seagate Technology Holdings plc at the end of Q4 2025 and filed for Q1 2026 without it.

Showing the largest 100 of 102 by value.

Institutions that sold out of STX in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Egerton Capital (UK) LLP729,325$200.8M
SG Americas Securities, LLC239,965$66.1M
Talos Asset Management LP105,800$29.1M
Swiss Life Asset Management Ltd86,735$23.9M
Liontrust Investment Partners LLP75,843$20.9M
SeaTown Holdings Pte. Ltd.32,500$8.95M
Parallax Volatility Advisers, L.P.27,658$7.62M
Ardmore Road Asset Management LP26,049$7.17M
Alberta Investment Management Corp19,200$5.29M
Greenland Capital Management LP18,809$5.18M
Sig Brokerage, LP14,731$4.06M
Beaconlight Capital, LLC12,651$3.48M
Donoghue Forlines LLC12,643$3.48M
Meitav Dash Investments Ltd11,079$3.05M
Estate Counselors, LLC10,834$2.98M
Twinbeech Capital LP9,443$2.60M
J. Goldman & Co LP9,000$2.48M
Stance Capital LLC8,308$2.29M
Fedenia Advisers LLC7,919$2.18M
Kerrisdale Advisers, LLC5,724$1.58M
Whitaker-Myers Wealth Managers, LTD.5,689$1.57M
Sherman Porfolios, LLC5,383$1.48M
Evergreen Quality Fund GP, Ltd.5,100$1.40M
ZWJ Investment Counsel Inc4,019$1.11M
Knights of Columbus Asset Advisors LLC4,003$1.10M
Park Capital Management, LLC3,993$1.10M
FNY Investment Advisers, LLC3,672$1.01M
Clear Street Markets LLC3,648$1.00M
Alpha Family Trust3,485$959.7K
Leonteq Securities AG3,232$890.1K
Connective Portfolio Management, LLC2,800$771.1K
Axxcess Wealth Management, LLC2,349$646.8K
Harbour Capital Advisors, LLC2,205$634.0K
Versor Investments LP2,146$591.0K
O'Neil Global Advisors, Inc.2,060$567.3K
Severin Investments, LLC2,031$559.4K
Sage Mountain Advisors LLC2,002$551.3K
Volterra Technologies LP1,966$541.4K
Campbell & CO Investment Adviser LLC1,859$511.9K
Net Worth Advisory Group1,851$509.8K
Tairen Capital Ltd1,820$501.2K
Avantax Planning Partners, Inc.1,700$468.2K
PharVision Advisers, LLC1,648$453.8K
Linscomb & Williams, Inc.1,620$446.1K
Virtu Financial LLC1,383$381.0K
Worth Financial Advisory Group, LLC1,361$374.8K
Haverford Trust Co1,181$325.2K
Triton Wealth Management, PLLC690$303.1K
Cfo Capital Management LLC1,072$295.2K
Groupama Asset Managment1,071$294.9K
Journey Retirement Planning & Investment Management LLC1,056$290.8K
Wallace Hart LLC1,053$290.0K
Heritage Wealth Advisors1,050$289.2K
Aigen Investment Management, LP994$273.7K
Altar Rock LLC988$272.8K
Scientech Research LLC974$268.2K
Ariadne Wealth Management, LP611$263.4K
Qsemble Capital Management, LP920$253.4K
Magnus Financial Group LLC895$246.5K
Columbia Advisory Partners LLC877$241.5K
BCS Wealth Management874$240.7K
Easterly Investment Partners LLC867$238.8K
Wellington Shields & Co., LLC850$234.1K
Integrated Quantitative Investments LLC799$220.0K
GK Wealth Management LLC799$220.0K
Burns J W & Co Inc786$216.5K
Nations Financial Group Inc,773$212.9K
FSA Advisors, Inc.763$210.1K
MBB Public Markets I LLC743$204.6K
Havemeyer Place LP678$186.7K
Vinland Capital Management Gestora de Recursos LTDA.558$153.7K
DV Trading LLC540$148.7K
Sentry Investment Management LLC526$145.0K
Elyxium Wealth, LLC486$133.9K
Community Bank, N.A.400$110.2K
Quattro Advisors LLC377$103.8K
TCTC Holdings, LLC298$82.1K
Reflection Asset Management292$80.4K
Garton & Associates Financial Advisors LLC260$71.7K
United Financial Planning Group LLC236$65.0K
Commonwealth Retirement Investments LLC234$64.4K
Camelot Portfolios, LLC159$43.8K
Concord Wealth Partners100$27.5K
Mountain Hill Investment Partners Corp.100$27.5K
Covestor Ltd90$25.0K
Mark Sheptoff Financial Planning, LLC100$15.0K
Cullen/Frost Bankers, Inc.52$14.3K
Howard Hughes Medical Institute46$12.7K
Laurel Wealth Advisors LLC45$12.4K
Darwin Advisors, LLC40$11.0K
Signature Equity Partners, LLC36$9.91K
Networth Advisors, LLC26$7.16K
Eq Wealth Advisors, LLC22$6.06K
Luken Investment Analytics, LLC20$5.51K
Turning Point Benefit Group, Inc.16$4.41K
CBIZ Investment Advisory Services, LLC14$3.87K
Tucker Asset Management LLC8$2.20K
Greenline Wealth Management LLC5$1.49K
Legacy Bridge, LLC5$1.38K
Optima Capital LLC4$1.10K

Not filed for Q1 2026 yet (17)

Institutions that held Seagate Technology Holdings plc at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding STX in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc28,119,431$7.74B
Norges Bank1,809,661$498.4M
Keystone Investors Pte Ltd70,051$19.3M
Forsta Ap-Fonden53,000$14.6M
CIBC World Markets Corp40,511$11.2M
MIG Capital, LLC32,150$8.85M
Transatlantique Private Wealth LLC9,591$2.64M
CIBC Private Wealth Group, LLC4,008$1.10M
Elevated Private Wealth, LLC3,925$1.08M
Global Retirement Partners, LLC2,263$623.3K
Running Point Capital Advisors, LLC1,489$410.1K
Yeomans Consulting Group, Inc.1,374$378.4K
David Loasby1,029$330.8K
AIFG Consultants Ltd.790$217.6K
DV Equities, LLC306$84.3K
Trust Co of Vermont50$13.8K
ORG Partners LLC32$8.81K