Seagate Technology Holdings plc (STX) — Institutional Holders, Q2 2026
1,978 institutional investment managers reported a STX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $180.7B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
STX in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- Invesco Ltd.Added · +4,937,030 sh+$4.8B
- WELLINGTON MANAGEMENT GROUP LLPAdded · +2,326,538 sh+$2.2B
- JANE STREET GROUPAdded · +1,454,111 sh+$1.4B
- EXCHANGE TRADED CONCEPTSAdded · +1,122,608 sh+$1.1B
- Capital International InvestorsNew · +1,032,054 sh+$995.9M
Biggest sellers
- Sanders CapitalTrimmed · -9,409,982 sh-$9.1B
- VANGUARD PORTFOLIO MANAGEMENTTrimmed · -3,095,222 sh-$3.0B
- NOMURA ASSET MANAGEMENT INTERNATIONALTrimmed · -1,798,886 sh-$1.7B
- FRANKLIN RESOURCESTrimmed · -1,720,116 sh-$1.7B
- DZ BANK AG Deutsche Zentral Genossenschafts Bank, FrankfurtTrimmed · -1,511,670 sh-$1.5B
STX 13F holders ranked 1–100 of 1,978
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BlackRock#1 · 15,166,793 sh | 15,166,793 | $14.6B | 0.22% | +6.3% |
| 2 | VANGUARD CAPITAL MANAGEMENT#2 · 14,630,067 sh | 14,630,067 | $14.1B | 0.30% | +3.4% |
| 3 | STATE STREET#3 · 9,911,669 sh | 9,911,669 | $9.6B | 0.28% | +6.3% |
| 4 | FMR#4 · 8,153,134 sh | 8,153,134 | $7.9B | 0.34% | -0.3% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT#5 · 7,999,686 sh | 7,999,686 | $7.7B | 0.35% | -27.9% |
| 6 | Invesco Ltd.#6 · 7,536,880 sh | 7,536,880 | $7.3B | 0.58% | +189.9% |
| 7 | WCM INVESTMENT MANAGEMENT#7 · 5,320,463 sh | 5,320,463 | $5.2B | 9.34% | +22.4% |
| 8 | JPMORGAN CHASE#8 · 5,201,103 sh | 5,201,103 | $5.0B | 0.28% | -21.9% |
| 9 | GEODE CAPITAL MANAGEMENT#9 · 5,155,435 sh | 5,155,435 | $5.0B | 0.26% | +1.9% |
| 10 | MORGAN STANLEY#10 · 4,720,524 sh | 4,720,524 | $4.6B | 0.24% | -0.8% |
| 11 | Capital Research Global Investors#11 · 4,326,781 sh | 4,326,781 | $4.2B | 0.58% | -24.6% |
| 12 | Sanders Capital#12 · 3,487,219 sh | 3,487,219 | $3.4B | 3.37% | -73.0% |
| 13 | GOLDMAN SACHS GROUP#13 · 3,440,106 sh | 3,440,106 | $3.3B | 0.29% | -3.7% |
| 14 | NORGES BANK#14 · 3,095,723 sh | 3,095,723 | $3.0B | 0.30% | — |
| 15 | MASSACHUSETTS FINANCIAL SERVICES#15 · 2,560,276 sh | 2,560,276 | $2.5B | 0.80% | +1.0% |
| 16 | WELLINGTON MANAGEMENT GROUP LLP#16 · 2,414,136 sh | 2,414,136 | $2.3B | 0.40% | +2655.9% |
| 17 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#17 · 2,138,429 sh | 2,138,429 | $2.1B | 0.92% | +49.2% |
| 18 | BANK OF AMERICA#18 · 2,115,112 sh | 2,115,112 | $2.0B | 0.13% | -37.4% |
| 19 | DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt#19 · 2,108,402 sh | 2,108,402 | $2.0B | 1.56% | -41.8% |
| 20 | NORTHERN#20 · 1,902,241 sh | 1,902,241 | $1.8B | 0.21% | +0.3% |
| 21 | FRANKLIN RESOURCES#21 · 1,798,079 sh | 1,798,079 | $1.7B | 0.38% | -48.9% |
| 22 | Jupiter Topco#22 · 1,608,436 sh | 1,608,436 | $1.6B | 0.63% | — |
| 23 | DEUTSCHE BANK AG\#23 · 1,591,694 sh | 1,591,694 | $1.5B | 0.45% | -9.5% |
| 24 | Legal & General Group Plc#24 · 1,530,731 sh | 1,530,731 | $1.5B | 0.31% | +1.1% |
| 25 | JANE STREET GROUP#25 · 1,473,813 sh | 1,473,813 | $1.4B | 0.12% | +7380.5% |
| 26 | PRICE T ROWE ASSOCIATES#26 · 1,430,343 sh | 1,430,343 | $1.4B | 0.14% | +13.7% |
| 27 | D. E. Shaw#27 · 1,354,377 sh | 1,354,377 | $1.3B | 0.62% | +5.0% |
| 28 | CHARLES SCHWAB INVESTMENT MANAGEMENT#28 · 1,352,030 sh | 1,352,030 | $1.3B | 0.17% | -0.9% |
| 29 | Bank of New York Mellon#29 · 1,286,208 sh | 1,286,208 | $1.2B | 0.20% | +21.5% |
| 30 | Amundi#30 · 1,285,101 sh | 1,285,101 | $1.2B | 0.30% | +33.1% |
| 31 | AQR CAPITAL MANAGEMENT#31 · 1,245,371 sh | 1,245,371 | $1.2B | 0.42% | +24.4% |
| 32 | VANGUARD FIDUCIARY#32 · 1,233,702 sh | 1,233,702 | $1.2B | 0.26% | +2.7% |
| 33 | EXCHANGE TRADED CONCEPTS#33 · 1,152,676 sh | 1,152,676 | $1.1B | 5.08% | +3733.6% |
| 34 | ROYAL BANK OF CANADA#34 · 1,044,994 sh | 1,044,994 | $1.0B | 0.15% | +3.1% |
| 35 | Capital International Investors#35 · 1,032,054 sh | 1,032,054 | $995.9M | 0.21% | New |
| 36 | LONE PINE CAPITAL#36 · 1,000,109 sh | 1,000,109 | $965.1M | 5.90% | New |
| 37 | Polar Capital Plc#37 · 984,377 sh | 984,377 | $949.9M | 2.24% | +5.4% |
| 38 | DIMENSIONAL FUND ADVISORS#38 · 942,529 sh | 942,529 | $909.6M | 0.16% | +12.7% |
| 39 | UBS Group AG#39 · 839,966 sh | 839,966 | $810.6M | 0.10% | +32.8% |
| 40 | National Pension Service#40 · 834,705 sh | 834,705 | $805.5M | 0.52% | +0.8% |
| 41 | Point72 Asset Management, L.P.#41 · 822,914 sh | 822,914 | $794.1M | 0.88% | +50.6% |
| 42 | Swedbank AB#42 · 822,103 sh | 822,103 | $793.3M | 0.68% | +15.9% |
| 43 | CITADEL ADVISORS#43 · 755,495 sh | 755,495 | $729.1M | 0.08% | +582.2% |
| 44 | Trivest Advisors Ltd#44 · 737,780 sh | 737,780 | $712.0M | 22.38% | +254.7% |
| 45 | SANDS CAPITAL MANAGEMENT#45 · 720,741 sh | 720,741 | $695.5M | 2.58% | +35.5% |
| 46 | Value Aligned Research Advisors#46 · 709,357 sh | 709,357 | $684.5M | 1.71% | -22.4% |
| 47 | CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#47 · 698,149 sh | 698,149 | $673.7M | 0.38% | +93.7% |
| 48 | Russell Investments Group, Ltd.#48 · 687,394 sh | 687,394 | $663.5M | 0.58% | -28.9% |
| 49 | BANK OF MONTREAL#49 · 658,813 sh | 658,813 | $635.8M | 0.21% | -34.7% |
| 50 | CANADA PENSION PLAN INVESTMENT BOARD#50 · 639,711 sh | 639,711 | $617.3M | 0.34% | -27.6% |
| 51 | MILLENNIUM MANAGEMENT#51 · 633,069 sh | 633,069 | $610.9M | 0.22% | +152.9% |
| 52 | Swiss National Bank#52 · 616,040 sh | 616,040 | $594.5M | 0.31% | -3.7% |
| 53 | Nuveen#53 · 605,858 sh | 605,858 | $584.7M | 0.14% | -21.5% |
| 54 | Atalan Capital Partners#54 · 573,000 sh | 573,000 | $552.9M | 33.92% | -20.3% |
| 55 | Mitsubishi UFJ Asset Management , Ltd.#55 · 569,718 sh | 569,718 | $549.8M | 0.30% | +9.9% |
| 56 | BARCLAYS PLC#56 · 568,334 sh | 568,334 | $548.4M | 0.11% | -15.2% |
| 57 | WT Asset Management Ltd#57 · 564,716 sh | 564,716 | $545.0M | 10.78% | +15.3% |
| 58 | Sumitomo Mitsui#58 · 556,378 sh | 556,378 | $536.9M | 0.31% | +6.5% |
| 59 | Qube Research & Technologies Ltd#59 · 552,780 sh | 552,780 | $533.4M | 0.50% | New |
| 60 | Castle Hook Partners#60 · 546,287 sh | 546,287 | $527.2M | 2.42% | -2.7% |
| 61 | Winslow Capital Management#61 · 517,006 sh | 517,006 | $498.9M | 1.72% | New |
| 62 | Vanguard Global Advisers#62 · 483,669 sh | 483,669 | $466.7M | 0.22% | +1.4% |
| 63 | FIRST ADVISORS#63 · 483,514 sh | 483,514 | $466.6M | 0.27% | -9.9% |
| 64 | BNP PARIBAS FINANCIAL MARKETS#64 · 473,888 sh | 473,888 | $457.3M | 0.16% | -19.7% |
| 65 | Sachem Head Capital Management#65 · 472,000 sh | 472,000 | $455.5M | 9.45% | New |
| 66 | SG Americas Securities#66 · 461,735 sh | 461,735 | $445.6M | 0.25% | New |
| 67 | Holocene Advisors#67 · 460,184 sh | 460,184 | $444.1M | 1.00% | -57.7% |
| 68 | CITIGROUP#68 · 457,832 sh | 457,832 | $441.8M | 0.15% | +36.0% |
| 69 | RENAISSANCE TECHNOLOGIES#69 · 457,353 sh | 457,353 | $441.3M | 0.61% | +47.3% |
| 70 | BNP Paribas Asset Management Holding S.A.#70 · 449,904 sh | 449,904 | $434.1M | 0.44% | +3.9% |
| 71 | ACADIAN ASSET MANAGEMENT#71 · 447,945 sh | 447,945 | $432.2M | 0.51% | -25.9% |
| 72 | VOYA INVESTMENT MANAGEMENT#72 · 442,630 sh | 442,630 | $427.1M | 0.37% | +248.5% |
| 73 | VANGUARD ASSET MANAGEMENT, Ltd#73 · 433,011 sh | 433,011 | $417.9M | 0.28% | +15.1% |
| 74 | HSBC PLC#74 · 418,762 sh | 418,762 | $401.8M | 0.17% | +10.6% |
| 75 | ENVESTNET ASSET MANAGEMENT#75 · 398,344 sh | 398,344 | $384.4M | 0.09% | +30.5% |
| 76 | Palestra Capital Management#76 · 386,123 sh | 386,123 | $372.6M | 12.63% | +31.3% |
| 77 | WELLS FARGO & COMPANY#77 · 372,329 sh | 372,329 | $359.3M | 0.06% | +14.4% |
| 78 | AMERIPRISE FINANCIAL#78 · 368,748 sh | 368,748 | $355.9M | 0.07% | -14.0% |
| 79 | TWO SIGMA INVESTMENTS#79 · 354,816 sh | 354,816 | $342.4M | 0.25% | +246.1% |
| 80 | RAYMOND JAMES FINANCIAL#80 · 348,962 sh | 348,962 | $336.7M | 0.09% | -9.4% |
| 81 | CACTI ASSET MANAGEMENT#81 · 327,925 sh | 327,925 | $316.4M | — | -37.7% |
| 82 | MIRAE ASSET GLOBAL ETFS Ltd.#82 · 317,585 sh | 317,585 | $306.0M | 0.36% | +2.0% |
| 83 | Quadrature Capital Ltd#83 · 313,545 sh | 313,545 | $302.6M | 2.59% | +221.3% |
| 84 | Maple Rock Capital Partners#84 · 301,162 sh | 301,162 | $290.6M | 5.70% | -43.6% |
| 85 | HRT FINANCIAL#85 · 300,093 sh | 300,093 | $289.6M | 0.73% | +30.7% |
| 86 | Alyeska Investment Group, L.P.#86 · 291,439 sh | 291,439 | $281.2M | 0.72% | +133.0% |
| 87 | Amanah#87 · 289,774 sh | 289,774 | $279.6M | — | 0.0% |
| 88 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#88 · 288,385 sh | 288,385 | $278.3M | 0.02% | +69.5% |
| 89 | TIGER GLOBAL MANAGEMENT#89 · 285,100 sh | 285,100 | $275.1M | 1.15% | New |
| 90 | TD ASSET MANAGEMENT#90 · 283,546 sh | 283,546 | $273.6M | 0.24% | +143.2% |
| 91 | Anther Capital Ltd#91 · 283,416 sh | 283,416 | $273.5M | 7.00% | -14.4% |
| 92 | Ensign Peak Advisors#92 · 272,913 sh | 272,913 | $263.4M | 0.43% | +6.7% |
| 93 | Clearbridge Investments#93 · 272,765 sh | 272,765 | $263.2M | 0.22% | +8510.0% |
| 94 | NATIXIS ADVISORS#94 · 266,259 sh | 266,259 | $256.9M | 0.29% | +24.4% |
| 95 | ALLIANCEBERNSTEIN L.P.#95 · 649,106 sh | 649,106 | $254.3M | 0.08% | +232.2% |
| 96 | BALYASNY ASSET MANAGEMENT L.P.#96 · 256,151 sh | 256,151 | $247.2M | 0.31% | -35.3% |
| 97 | ProShare Advisors#97 · 255,231 sh | 255,231 | $246.3M | 0.36% | -19.9% |
| 98 | LPL Financial#98 · 252,892 sh | 252,892 | $244.0M | 0.05% | -4.9% |
| 99 | HEALTHCARE OF ONTARIO PENSION PLAN FUND#99 · 250,187 sh | 250,187 | $241.4M | 0.34% | -4.5% |
| 100 | PRINCIPAL FINANCIAL GROUP#100 · 249,488 sh | 249,488 | $240.8M | 0.12% | +2.4% |
Funds that sold out of STX in Q2 2026 (66)
Held STX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.