Who holds ticker verified against the SEC company list on 2026-09-10 — a reviewed name-and-class mapping row, never an inferred symbol. how tickers are mapped ↗

SEAGATE TECHNOLOGY HLDNGS PL · ORD SHS · Q1 2026 · 12 members disclosed STX ↗
13F filers reporting this class for the quarter ended 2026-03-31; 1–500 of 1,082 holders are listed, largest first
1,082
sum of the reported values across every holder; undisclosed values are left out, never counted as zero
$61.4B
holders whose share count rose or who opened the position (new + add), by shares
587
holders absent this quarter after holding last quarter — inferred from absence, not a sale record
82
FILING WINDOW OPEN
Q3 2026 filings are due by 2026-11-16 — figures for that quarter will change; missing filers are not zeros.

Holders — quarter ended 2026-03-31

by reported value · Δ shares vs 2025-12-31Holders rank by reported value. The change kind — new, add, trim or exit — is read from the share count against the prior quarter, never from the reported value.
13F holders of STX ranked by reported value, 1–25 of 1,082 holders
#FilerReported valueSharesΔ sharesChange
1BlackRock, Inc.$5.6B14,274,083−1,842,843TRIM
2VANGUARD CAPITAL MANAGEMENT LLC$5.5B14,155,673—NO PRIOR
3Sanders Capital, LLC$5.1B12,897,201−4,283,691TRIM
4VANGUARD PORTFOLIO MANAGEMENT LLC$4.3B11,094,908—NO PRIOR
5STATE STREET CORP$3.7B9,321,632−49,173TRIM
6FMR LLC$3.2B8,176,918+4,417,259ADD
7Capital Research Global Investors$2.2B5,736,070+1,224,081ADD
8MORGAN STANLEY$1.9B4,759,312−558,204TRIM
9WCM INVESTMENT MANAGEMENT, LLC$1.6B4,346,852−808,020TRIM
10DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main$1.4B3,620,072−1,796,170TRIM
11FRANKLIN RESOURCES INC$1.4B3,518,195−507,931TRIM
12BANK OF AMERICA CORP /DE/$1.3B3,380,440−900,165TRIM
13Invesco Ltd.$1.0B2,599,850+40,925ADD
14MASSACHUSETTS FINANCIAL SERVICES CO /MA/$1.0B2,536,122+527,606ADD
15NORTHERN TRUST CORP$743M1,896,993−3,639TRIM
16NOMURA ASSET MANAGEMENT INTERNATIONAL INC.$707M1,804,383+1,804,383NEW
17DEUTSCHE BANK AG\$689M1,759,174+159,212ADD
18UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$601M1,534,212+53,888ADD
19Legal & General Group Plc$593M1,514,617+1,514,617NEW
20ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$562M1,433,495−1,759,568TRIM
21CHARLES SCHWAB INVESTMENT MANAGEMENT INC$535M1,364,839−12,953TRIM
22D. E. Shaw & Co., Inc.$505M1,289,573+493,101ADD
23VANGUARD FIDUCIARY TRUST CO$471M1,201,062—NO PRIOR
24Holocene Advisors, LP$426M1,087,617+328,503ADD
25ROYAL BANK OF CANADA$397M1,013,493+1,013,493NEW
Show the top 500 of 1,082 holders
Truncated by Public Filings. Top 500 of 1,082 holders shown; the rest are on EDGAR. Method ↗
Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Congress ↔ notable managers · STX

Congress · last 90 days

Buyers
0 — —
Sellers
2 Kevin Hern R–OK-1, Lisa C. McClain R–MI-9 $16K–$65K

filed 2026-07-31 → 2026-10-29 · statutory ranges

Use of congressional disclosure reports for commercial purposes, credit decisions or solicitation is restricted by 5 U.S.C. §13107(c).

Notable managers · quarter ended 2026-03-31

Trimming
1 Gotham Asset Management $12.9M held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · SEAGATE TECHNOLOGY HLDNGS PL

Merged timeline of congressional filings and notable-manager moves on STX
DateWhoChangeSize
2026-10-12Lisa C. McClain CongressSELL$15K–$50K
2026-09-25Kevin Hern CongressSELL$1K–$15K
2026-05-15Bridgewater Associates 13FADD+49,140 sh
2026-05-15Tudor Investment Corp 13FNEW+102,041 sh
2026-05-15Moore Capital Management 13FNEW+1,096 sh
2026-05-15Duquesne Family Office 13FNEW+50,700 sh
2026-05-15Gotham Asset Management 13FTRIM−8,468 sh

7 newest, by filing date · 13F rows are quarter-end snapshots, not trades

A 13F is a quarterly, long-only snapshot filed up to 45 days late — not current holdings. what a 13F covers ↗

13F reports cover LONG positions in Section 13(f) securities (US exchange-traded equities plus reportable options, warrants, certain convertibles) held by managers with at least $100M in such securities — so managers below that threshold are absent entirely. No short positions, no cash, no non-13(f) assets — not a full portfolio, and not a census of institutional ownership.

Positions are quarter-end snapshots filed up to 45 days late — not current holdings: a position may have changed or closed since the quarter ended.

Values are the manager's stated market value at quarter-end in era-dependent units (whole dollars for form versions effective 2023-01-03 onward, thousands before), normalized here to whole dollars; each record notes its original unit.

Affiliated managers may report the same position, so one position can appear under more than one filer.

Positions under confidential treatment may be omitted until a later amendment discloses them.

These are disclosures, not investment advice.