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Security record · archived quarter

STX

Seagate Technology Holdings plc · Technology · Computer Hardware

639.01 -7.5% mkt cap $145.31B quote delayed (FMP) · as of Oct 18 03:59 UTC · separate from filing data below

Q3 2026 Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024
175Tracked holders
+8Δ holders
161.32MShares held
$60.73BReported value
+9New positions
−2Exits
Strongly Falling Conviction score 30/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth +4.8% · share flow -30.0% · net new positions +4.0% · formula
Ownership fragmentation: more holders, smaller aggregate stake

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q3 2026 4 0 97.81K $85.38M n/a n/a
Q2 2026 178 +7 149.79M $144.19B +10 −4
Q1 2026 175 +8 161.32M $60.73B +9 −2
Q4 2025 167 -1 286.32M $48.08B +1 −1
Q3 2025 25 +2 121.83M $24.68B +2 −1
Q2 2025 21 +2 112.89M $10.24B +3 −1
Q1 2025 16 -3 19.10M $1.63B n/a −3
Q4 2024 19 0 51.85M $2.10B +2 −2
Q3 2024 18 +4 61.19M $1.84B +4 n/a
Q2 2024 14 n/a 13.27M $1.37B n/a n/a
Holder count
Who holds it · Q1 2026
#ManagerSharesΔ sharesValueTheir weightHeld
1 BlackRock ✦ (passive) 14.27M -11.4% $5.59B 0.1% ▼ Trim 4 SEC ↗ ×23
2 Vanguard Capital Management Llc 14.16M n/a $5.55B 0.1% n/c 1 SEC ↗
3 Sanders Capital, LLC 12.90M -24.9% $5.05B 6.0% ▼ Trim 2 SEC ↗
4 State Street Global Advisors ✦ (passive) 9.32M -0.5% $3.66B 0.1% ▼ Trim 6 SEC ↗ ×2
5 Fidelity (FMR) ✦ 8.18M +117.5% $3.20B 0.2% ▲ Add 4 SEC ↗ ×12
6 Invesco Ltd. 7.18M -2.5% $2.81B 0.3% ▼ Trim 2 SEC ↗ ×20
7 JPMorgan Chase ✦ 6.66M -4.8% $2.41B 0.2% ▼ Trim 3 SEC ↗ ×22
8 Capital Research Global Investors 5.74M +27.1% $2.25B 0.3% ▲ Add 2 SEC ↗
9 Geode Capital Management ✦ (passive) 5.06M +3.4% $1.98B 0.1% ▲ Add 8 SEC ↗ ×2
10 Morgan Stanley ✦ 4.76M -10.5% $1.86B 0.1% ▼ Trim 3 SEC ↗ ×20
11 Wcm Investment Management, Llc 4.35M -15.7% $1.58B 3.6% ▼ Trim 2 SEC ↗
12 DZ BANK AG Deutsche Zentral… 3.62M -33.2% $1.42B 1.3% ▼ Trim 2 SEC ↗ ×3
13 Goldman Sachs Group ✦ 3.57M +29.7% $1.40B 0.2% ▲ Add 3 SEC ↗ ×6
14 Franklin Resources Inc 3.52M -12.6% $1.38B 0.3% ▼ Trim 2 SEC ↗ ×13
15 Bank Of America Corp /De/ 3.38M -21.0% $1.32B 0.1% ▼ Trim 2 SEC ↗ ×9
16 Massachusetts Financial Services Co… 2.54M +26.3% $1.01B 0.3% ▲ Add 2 SEC ↗ ×8
17 Northern Trust Corp 1.90M -0.2% $743.17M 0.1% ▼ Trim 2 SEC ↗ ×11
18 Nomura Asset Management… 1.80M +36716.6% $706.88M 1.2% ▲ Add 2 SEC ↗ ×2
19 Deutsche Bank Ag\ 1.76M +9.9% $689.17M 0.2% ▲ Add 2 SEC ↗ ×8
20 UBS AM, a distinct business unit of… 1.53M +3.6% $601.04M 0.1% ▲ Add 2 SEC ↗ ×11
21 Legal & General Group Plc 1.51M -0.6% $593.37M 0.1% ▼ Trim 2 SEC ↗ ×3
22 Arrowstreet Capital ✦ 1.43M -55.1% $561.59M 0.3% ▼ Trim 4 SEC ↗
23 Charles Schwab Investment… 1.36M -0.9% $534.69M 0.1% ▼ Trim 2 SEC ↗
24 D. E. Shaw & Co. ✦ 1.29M +61.9% $505.20M 0.4% ▲ Add 8 SEC ↗ ×2
25 T. Rowe Price ✦ 1.26M +8.2% $492.99M 0.1% ▲ Add 8 SEC ↗ ×2
26 Holocene Advisors, LP 1.09M +43.3% $426.08M 1.0% ▲ Add 2 SEC ↗
27 Bank of New York Mellon Corp 1.38M -13.4% $416.04M 0.1% ▼ Trim 2 SEC ↗ ×21
28 Royal Bank Of Canada 1.01M -2.0% $397.05M 0.1% ▼ Trim 2 SEC ↗ ×9
29 Bank Of Montreal /Can/ 1.01M +27.0% $395.09M 0.2% ▲ Add 2 SEC ↗ ×10
30 AQR Capital Management ✦ 1.00M +17.4% $383.99M 0.2% ▲ Add 8 SEC ↗ ×8
31 Janus Henderson Group Plc 967.53K +3872.1% $378.99M 0.2% ▲ Add 2 SEC ↗ ×4
32 Amundi 965.57K +32.2% $378.27M 0.1% ▲ Add 2 SEC ↗ ×8
33 Russell Investments Group, Ltd. 966.46K +1.0% $376.62M 0.4% ▲ Add 2 SEC ↗ ×20
34 Canada Pension Plan Investment Board 883.57K -2.8% $346.15M 0.2% ▼ Trim 2 SEC ↗
35 Dimensional Fund Advisors Lp 836.02K -7.0% $327.20M 0.1% ▼ Trim 2 SEC ↗ ×5
36 National Pension Service 827.76K -17.0% $324.28M 0.2% ▼ Trim 2 SEC ↗
37 Nuveen, LLC 771.38K -1.2% $302.20M 0.1% ▼ Trim 2 SEC ↗ ×4
38 Swedbank AB 709.16K +67.6% $277.82M 0.3% ▲ Add 2 SEC ↗ ×2
39 Barclays Plc 669.83K -14.1% $262.41M 0.1% ▼ Trim 2 SEC ↗ ×4
40 Swiss National Bank 639.40K +9.6% $250.49M 0.1% ▲ Add 2 SEC ↗
41 UBS Group AG 632.68K +13.5% $247.86M 0.0% ▲ Add 2 SEC ↗ ×6
42 Bnp Paribas Financial Markets 590.50K -28.1% $231.34M 0.2% ▼ Trim 2 SEC ↗ ×3
43 Point72 Asset Management ✦ 546.38K +37.4% $214.05M 0.4% ▲ Add 7 SEC ↗
44 First Trust Advisors Lp 536.66K -4.0% $210.24M 0.1% ▼ Trim 2 SEC ↗
45 Soroban Capital Partners LP 534.36K 0.0% $209.34M 1.5% Held 2 SEC ↗
46 Sumitomo Mitsui Trust Group, Inc. 522.34K +0.7% $204.63M 0.1% ▲ Add 2 SEC ↗
47 Mitsubishi UFJ Asset Management… 518.45K +8.5% $203.11M 0.1% ▲ Add 2 SEC ↗
48 BNP Paribas Asset Management… 5.54M +6.9% $193.65M 0.2% ▲ Add 2 SEC ↗ ×6
49 Ameriprise Financial Inc 429.00K +4.4% $168.09M 0.0% ▲ Add 2 SEC ↗ ×6
50 Balyasny Asset Management L.P. 396.14K +5090.5% $155.19M 0.3% ▲ Add 2 SEC ↗ ×2
51 Raymond James Financial Inc 385.33K -5.1% $150.96M 0.0% ▼ Trim 2 SEC ↗ ×4
52 Hsbc Holdings Plc 378.53K +9.8% $147.75M 0.1% ▲ Add 2 SEC ↗ ×8
53 California Public Employees… 360.40K +0.7% $141.19M 0.1% ▲ Add 2 SEC ↗
54 Citigroup Inc 336.56K -7.7% $131.85M 0.1% ▼ Trim 2 SEC ↗ ×3
55 Bridgewater Associates ✦ 329.12K +17.6% $128.93M 0.6% ▲ Add 4 SEC ↗
56 Wells Fargo & Company/Mn 325.41K -11.3% $127.48M 0.0% ▼ Trim 2 SEC ↗ ×5
57 ProShare Advisors LLC 318.51K -16.4% $124.78M 0.2% ▼ Trim 2 SEC ↗
58 MIRAE ASSET GLOBAL ETFS HOLDINGS… 311.45K +6.4% $121.93M 0.2% ▲ Add 2 SEC ↗ ×3
59 Renaissance Technologies ✦ 310.49K -18.7% $121.64M 0.2% ▼ Trim 8 SEC ↗
60 California State Teachers… 307.29K 0.0% $120.39M 0.1% ▼ Trim 2 SEC ↗
61 Envestnet Asset Management Inc 305.14K +11.3% $119.54M 0.0% ▲ Add 2 SEC ↗
62 Connor, Clark & Lunn Investment… 298.20K -21.1% $116.82M 0.3% ▼ Trim 2 SEC ↗
63 Squarepoint Ops LLC 268.87K -51.0% $105.33M 0.2% ▼ Trim 2 SEC ↗
64 LPL Financial LLC 265.91K +7.5% $104.17M 0.0% ▲ Add 2 SEC ↗
65 Healthcare Of Ontario Pension Plan… 261.85K -10.6% $102.58M 0.2% ▼ Trim 2 SEC ↗
66 Ensign Peak Advisors, Inc 255.73K +20.4% $100.18M 0.2% ▲ Add 2 SEC ↗
67 Millennium Management ✦ 250.28K -99.8% $98.05M 0.1% ▼ Trim 8 SEC ↗
68 Focus Partners Wealth 249.28K -24.1% $97.87M 0.1% ▼ Trim 2 SEC ↗
69 Sei Investments Co 308.15K -27.6% $97.11M 0.1% ▼ Trim 2 SEC ↗ ×3
70 Principal Financial Group Inc 243.64K +0.3% $95.45M 0.1% ▲ Add 2 SEC ↗
71 National Bank Of Canada /Fi/ 233.32K -0.7% $91.41M 0.1% ▼ Trim 2 SEC ↗ ×5
72 PRIMECAP Management ✦ 230.33K -40.1% $90.23M 0.1% ▼ Trim 8 SEC ↗
73 Hrt Financial Lp 229.53K New $89.92M 0.2% New 1 SEC ↗
74 Rhumbline Advisers 229.21K -3.1% $89.80M 0.1% ▼ Trim 2 SEC ↗
75 Allianz Asset Management GmbH 227.37K -19.4% $89.08M 0.1% ▼ Trim 2 SEC ↗ ×4
76 Storebrand Asset Management As 212.79K -11.2% $83.36M 0.2% ▼ Trim 2 SEC ↗
77 Victory Capital Management Inc 195.67K -5.3% $76.66M 0.0% ▼ Trim 2 SEC ↗
78 Adage Capital Partners ✦ 185.40K +10.9% $72.63M 0.1% ▲ Add 4 SEC ↗
79 Aberdeen Group plc 184.19K +3.0% $72.16M 0.1% ▲ Add 2 SEC ↗ ×3
80 Aviva Plc 183.15K +3.0% $71.75M 0.1% ▲ Add 2 SEC ↗
81 Federated Hermes, Inc. 180.88K -19.5% $70.86M 0.1% ▼ Trim 2 SEC ↗ ×4
82 Mackenzie Financial Corp 179.70K +10.0% $70.40M 0.1% ▲ Add 2 SEC ↗
83 Korea Investment CORP 179.54K -21.4% $70.34M 0.1% ▼ Trim 2 SEC ↗
84 Susquehanna International Group, Llp 170.19K +17.3% $66.67M 0.1% ▲ Add 2 SEC ↗ ×2
85 Mirae Asset Global Investments Co.… 169.19K +60.9% $66.28M 0.2% ▲ Add 2 SEC ↗ ×2
86 Neuberger Berman Group LLC 166.52K +61.5% $65.24M 0.1% ▲ Add 2 SEC ↗ ×2
87 PFA Pension, Forsikringsaktieselskab 156.61K +83.7% $61.35M 0.2% ▲ Add 2 SEC ↗
88 Caisse De Depot Et Placement Du… 139.10K +20.3% $54.49M 0.1% ▲ Add 2 SEC ↗
89 State Of Wisconsin Investment Board 137.55K +6.9% $53.89M 0.1% ▲ Add 2 SEC ↗
90 Alliancebernstein L.P. 195.37K -0.7% $53.80M 0.0% ▼ Trim 2 SEC ↗
91 LMR Partners LLP 136.95K +881.5% $53.65M 0.6% ▲ Add 2 SEC ↗ ×2
92 Pictet Asset Management Holding SA 135.38K +1.6% $52.99M 0.1% ▲ Add 2 SEC ↗
93 Stifel Financial Corp 132.29K +1.2% $51.83M 0.0% ▲ Add 2 SEC ↗ ×5
94 Voya Investment Management Llc 127.01K -2.7% $49.76M 0.1% ▼ Trim 2 SEC ↗ ×3
95 Quantinno Capital Management LP 125.63K -8.0% $49.22M 0.1% ▼ Trim 2 SEC ↗
96 Alyeska Investment Group, L.P. 125.08K -63.9% $49.00M 0.1% ▼ Trim 2 SEC ↗
97 Danske Bank A/S 121.26K +13.3% $47.51M 0.1% ▲ Add 2 SEC ↗ ×2
98 Manufacturers Life Insurance… 120.35K -10.7% $47.15M 0.0% ▼ Trim 2 SEC ↗ ×2
99 Td Asset Management Inc 116.58K +13.0% $45.67M 0.0% ▲ Add 2 SEC ↗
100 Citadel Advisors ✦ 110.75K -42.1% $43.39M 0.0% ▼ Trim 8 SEC ↗ ×2

“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.

New buyers

Hrt Financial Lp $89.92M 0.2%

Exited

Norges Bank $498.36M was 0.1%
Parallax Volatility Advisers… $7.62M was 0.3%

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,440 holders, 178.17M shares, $68.20B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

No open-market insider purchases in our coverage window.

Open-market sales (S)

Sep 21 Morris John Christopher

Officer · 40 sh · $35,622

Sep 21 Morris John Christopher

Officer · 160 sh · $138,897

Sep 21 Morris John Christopher

Officer · 915 sh · $818,257

Sep 21 Morris John Christopher

Officer · 974 sh · $852,590

Sep 21 Morris John Christopher

Officer · 40 sh · $35,451

Sep 21 Morris John Christopher

Officer · 40 sh · $36,083

Sep 21 Morris John Christopher

Officer · 760 sh · $666,174

Sep 21 Morris John Christopher

Officer · 80 sh · $71,782

Sep 21 Morris John Christopher

Officer · 520 sh · $453,212

Sep 21 Morris John Christopher

Officer · 986 sh · $862,261

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership
Aug 05 SC 13G/A: Sanders Capital, LLC

View original SEC filing ↗

Jul 31 SC 13G/A: VANGUARD PORTFOLIO MANAGEMENT LLC

View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q1 2026 · Methodology · Get this via the API