InvestorLens

STX — SEAGATE TECHNOLOGY HLDNGS PL

Public company

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For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying STX?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence
75
Institutional Conviction
Net accumulation · 3 buying vs 1 selling last quarter
63
Macro Tailwind
Macro conditions are mixed for this sector
56
Congressional Activity
1 congressional purchase, 0 sales disclosed in the last 6 months
Why? — Evidence & Confidence ▾

Of 4 tracked investors who changed their STX position last quarter, 3 bought and 1 sold (75% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Overheat regime). 1 congressional purchase, 0 sales disclosed in the last 6 months.

Supporting evidence
  • +3 tracked investors added or increased positions last quarter (Steve Mandel, Chase Coleman, Stanley Druckenmiller)
  • +8 tracked investors reported holding STX at their latest filing
  • +Macro Health is 56/100 in a Overheat regime — historically acceptable for this sectorsource
Contradicting evidence — always shown
  • −1 tracked investor reduced or exited last quarter (1 reduced, 0 sold out)
  • −13F data is disclosed up to 45 days after quarter end — positions may have changed since
Know the limits
  • · 13F disclosure lag (up to 45 days)
  • · Tracked investors are a sample, not the whole market
  • · Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 9/18/2026.

About SEAGATE TECHNOLOGY HLDNGS PL (STX)

SEAGATE TECHNOLOGY HLDNGS PL (STX) appears in the most recent 13F filings of 8 tracked institutional investors. The largest disclosed position is held by Ken Griffin (Citadel Advisors), valued at $5.0B. Across recent filings, tracked investors recorded 12 new positions, 9 increased, 7 reduced, and 7 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in STX

60
/100
Institutional Accumulation
Added / Increased21
Reduced7
Exited7
BearishBullish
Crowded Trade Score™

How many top investors track STX

53
/100
Moderate Interest
8investors

Several tracked investors have exposure.

UndiscoveredCrowded
151015+

STX Ownership Composition

How SEAGATE TECHNOLOGY HLDNGS PL is held across tracked investor types, based on reported 13F positions.

Dominant Type
Multi-Strategy / Quant
81% of tracked value
Institutions
8
tracked investors
Total Reported
$8.5B
combined 13F value
Types3
  • Multi-Strategy / Quant80.9%
  • Growth & Innovation14.6%
  • Macro4.6%
Multi-Strategy / Quant(3)
80.9%
Growth & Innovation(2)
14.6%
Macro(3)
4.6%

Tracked investors currently reporting STX

2 tracked investors have since exited this position — listed separately below.

  • Ken GriffinJun 30, 2026
    Citadel Advisors
    Shares
    5.2M
    Value
    $5B
    % Portfolio
    0.57%
  • Izzy EnglanderJun 30, 2026
    Millennium Management
    Shares
    1.1M
    Value
    $1.1B
    % Portfolio
    0.38%
  • Steve MandelJun 30, 2026
    Lone Pine Capital
    Shares
    1M
    Value
    $965.1M
    % Portfolio
    5.90%
  • Steve CohenJun 30, 2026
    Point72 Asset Management
    Shares
    885.6K
    Value
    $854.6M
    % Portfolio
    0.94%
  • Chase ColemanJun 30, 2026
    Tiger Global Management
    Shares
    285.1K
    Value
    $275.1M
    % Portfolio
    1.15%
  • Stanley DruckenmillerJun 30, 2026
    Duquesne Family Office
    Shares
    122K
    Value
    $117.7M
    % Portfolio
    2.26%
  • Ray DalioJun 30, 2026
    Bridgewater Associates
    Shares
    199.8K
    Value
    $192.8M
    % Portfolio
    0.79%
  • Paul Tudor JonesJun 30, 2026
    Tudor Investment Corp
    Shares
    82.3K
    Value
    $79.4M
    % Portfolio
    0.11%

Previously held STX

These investors reported STX in an earlier quarter but not in their most recent 13F. Figures below are their last reported position, not a current holding.

InvestorFirmLast reported sharesValue thenLast held
Seth KlarmanBaupost Group600K$39.6MSep 30, 2023
Leopold AschenbrennerSituational Awareness LP48.6K$11.5MSep 30, 2025

Recent activity

Frequently asked questions

How many institutional investors hold STX?
8 tracked institutional investors disclosed a position in STX (SEAGATE TECHNOLOGY HLDNGS PL) in their most recent 13F filing.
Who is the largest institutional holder of STX?
Ken Griffin, Citadel Advisors, holds the largest disclosed position in STX, valued at $5.0B.
Did institutional ownership of STX increase or decrease?
Across recent 13F filings, tracked investors recorded 12 new positions, 9 increased, 7 reduced, and 7 fully exited STX.
Where does this STX ownership data come from?
SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.
STX (SEAGATE TECHNOLOGY HLDNGS PL) — Institutional Holders — InvestorLens