Seagate Technology Holdings plc 13F holders
Of the 44 funds followed here, 17 reported a position in Seagate Technology Holdings plc in a 13F for the quarter ended 30 June 2026. The largest: FMR LLC, 8.2 million shares worth $7.87 billion, 0.3% of its reported book. New this quarter: Lone Pine Capital, Tiger Global Management, Whale Rock Capital Management, Ratan Capital.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| FMR LLC | 8,153,134 | $7.87 billion | 0.3% | -23,784 | trimmed | 30 June 2026 | 13F |
| Citadel Advisors | 5,166,795 | $4.99 billion | 0.6% | +1,834,050 | added | 30 June 2026 | 13F |
| Geode Capital Management | 5,155,435 | $4.96 billion | 0.3% | +94,607 | added | 30 June 2026 | 13F |
| Capital Research Global Investors | 4,326,781 | $4.18 billion | 0.6% | -1,409,289 | trimmed | 30 June 2026 | 13F |
| Norges Bank | 3,095,723 | $2.99 billion | 0.3% | held | 30 June 2026 | 13F | |
| Millennium Management | 1,091,269 | $1.05 billion | 0.4% | +427,190 | added | 30 June 2026 | 13F |
| Lone Pine Capital | 1,000,109 | $965.1 million | 5.9% | +1,000,109 | new | 30 June 2026 | 13F |
| Point72 Asset Management | 885,614 | $854.6 million | 0.9% | +192,636 | added | 30 June 2026 | 13F |
| Renaissance Technologies | 457,353 | $441.3 million | 0.6% | +146,859 | added | 30 June 2026 | 13F |
| Two Sigma Investments | 377,716 | $364.5 million | 0.3% | +230,991 | added | 30 June 2026 | 13F |
| Alyeska | 291,439 | $281.2 million | 0.7% | +166,354 | added | 30 June 2026 | 13F |
| Tiger Global Management | 285,100 | $275.1 million | 1.1% | +285,100 | new | 30 June 2026 | 13F |
| Bridgewater Associates | 199,822 | $192.8 million | 0.8% | -129,295 | trimmed | 30 June 2026 | 13F |
| Whale Rock Capital Management | 148,543 | $143.3 million | 1.2% | +148,543 | new | 30 June 2026 | 13F |
| Duquesne Family Office | 122,000 | $117.7 million | 2.3% | +71,300 | added | 30 June 2026 | 13F |
| Ratan Capital | 3,750 | $3.6 million | 1.2% | +3,750 | new | 30 June 2026 | 13F |
| Baillie Gifford | 40 | $38,600 | 0.0% | +40 | new | 30 June 2026 | 13F |
Value is what the fund reported. Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.
Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 5 August 2026 | 13G/A | Sanders Capital, LLC and 3 others | 3.5 million | 1.6% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 31 July 2026 | 13G/A | Vanguard Portfolio Management and 1 other | 8.0 million | 3.6% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 30 April 2026 | 13G | Vanguard Capital Management and 1 other | 16.3 million | 7.5% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 29 April 2026 | 13G | Vanguard Portfolio Management and 1 other | 11.1 million | 5.1% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 16 April 2026 | 13G/A | Sanders Capital, LLC and 3 others | 13.0 million | 6.0% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 27 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 4 November 2025 | 13G/A | Jpmorgan Chase & Co. and 1 other | 8.7 million | 4.0% | 31 October 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 31 October 2025 | 13G/A | Jpmorgan Chase & Co. and 1 other | 12.0 million | 5.6% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder. Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.
Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 31 August 2026 | 84 | $829.76 | SEC |
| 26 August 2026 | 140 | $821.67 | SEC |
| 17 August 2026 | 507 | $973.44 | SEC |
| 12 August 2026 | 860 | $820.52 | SEC |
| 11 August 2026 | 1,826 | $800.99 | SEC |
| 7 August 2026 | 227 | $852.95 | SEC |
| 3 August 2026 | 253 | $856.13 | SEC |
| 29 July 2026 | 1 | $747.30 | SEC |
| 20 July 2026 | 2,038 | $787.66 | SEC |
| 17 July 2026 | 116 | $745.49 | SEC |
| 16 July 2026 | 56 | $828.30 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period. Largest in the window: 2,038 on 20 July 2026. A fail is an operational fact about settlement, not a position.
Source
Each fund's 13F-HR on EDGAR, linked per row; positions matched to STX by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.
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