S
Seagate Technology
STX · Storage
$828.30
-50.01 (-5.69%)
As of Jul 15, 2026 close
Institutional Ownership — Q1 2026 (filed through May 29)
Institutional Holders
1420
+167 vs Q4 2025
Shares Held
184.6M
-4.2M QoQ
% of Shares Out
29.5%
66.1M held with sole discretion
Value Held
$152.9B
at $828.30 · Jul 15, 2026 close
5%+ Owners
5
via 13G/13D
% of Shares Out counts only shares held with sole investment discretion. Where two managers share discretion, Form 13F requires each to report the full position, so summing every filer exceeds 100% of shares outstanding for widely-held names.
Holder Map
Block size ∝ position · color = QoQ changeWhale Activity — Q1 2026 Filings
Increased482
Decreased482
New position297
Closed130
Institutional Shares Held by Quarter
Holders
Sortable · search holders| Source | % of Shrs Out | Period | |||||
|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13F | 14,274,083 | -1,842,843 -11.4% | $5.6B | 6.4% | Mar 31, 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC | 13F | 14,155,673 | +14,155,673 new | $5.5B | 6.3% | Mar 31, 2026 | |
| Sanders Capital, LLC | 13F | 12,897,201 | -4,283,691 -24.9% | $5.1B | 5.8% | Mar 31, 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 13F | 11,094,908 | +11,094,908 new | $4.3B | 4.9% | Mar 31, 2026 | |
| STATE STREET CORP | 13F | 9,321,632 | -49,173 -0.5% | $3.7B | 4.2% | Mar 31, 2026 | |
| FMR LLC | 13F | 8,176,918 | +4,417,259 +117.5% | $3.2B | 3.6% | Mar 31, 2026 | |
| JPMORGAN CHASE & CO | 13F | 6,659,239 | -338,736 -4.8% | $2.4B | 3.0% | Mar 31, 2026 | |
| Capital Research Global Investors | 13F | 5,736,070 | +1,224,081 +27.1% | $2.2B | 2.6% | Mar 31, 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC | 13F | 5,060,828 | +164,013 +3.3% | $2.0B | 2.3% | Mar 31, 2026 | |
| MORGAN STANLEY | 13F | 4,759,312 | -558,204 -10.5% | $1.9B | 2.1% | Mar 31, 2026 | |
| WCM INVESTMENT MANAGEMENT, LLC | 13F | 4,346,852 | -808,020 -15.7% | $1.6B | 1.9% | Mar 31, 2026 | |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 13F | 3,620,072 | -1,796,170 -33.2% | $1.4B | 1.6% | Mar 31, 2026 | |
| GOLDMAN SACHS GROUP INC | 13F | 3,573,790 | +818,119 +29.7% | $1.4B | 1.6% | Mar 31, 2026 | |
| FRANKLIN RESOURCES INC | 13F | 3,518,195 | -507,931 -12.6% | $1.4B | 1.6% | Mar 31, 2026 | |
| BANK OF AMERICA CORP /DE/ | 13F | 3,380,440 | -900,165 -21.0% | $1.3B | 1.5% | Mar 31, 2026 | |
| Invesco Ltd. | 13F | 2,599,850 | +40,925 +1.6% | $1.0B | 1.2% | Mar 31, 2026 | |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 13F | 2,536,122 | +527,606 +26.3% | $1.0B | 1.1% | Mar 31, 2026 | |
| NORTHERN TRUST CORP | 13F | 1,896,993 | -3,639 -0.2% | $743.2M | 0.8% | Mar 31, 2026 | |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 13F | 1,804,383 | +1,799,482 +36716.6% | $706.9M | 0.8% | Mar 31, 2026 | |
| DEUTSCHE BANK AG\ | 13F | 1,759,174 | +159,212 +10.0% | $689.2M | 0.8% | Mar 31, 2026 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 13F | 1,534,212 | +53,888 +3.6% | $601.0M | 0.7% | Mar 31, 2026 | |
| Legal & General Group Plc | 13F | 1,514,617 | -9,514 -0.6% | $593.4M | 0.7% | Mar 31, 2026 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 13F | 1,433,495 | -1,759,568 -55.1% | $561.6M | 0.6% | Mar 31, 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 13F | 1,364,839 | -12,953 -0.9% | $534.7M | 0.6% | Mar 31, 2026 | |
| D. E. Shaw & Co., Inc. | 13F | 1,289,573 | +493,101 +61.9% | $505.2M | 0.6% | Mar 31, 2026 | |
| PRICE T ROWE ASSOCIATES INC /MD/ | 13F | 1,258,397 | +95,196 +8.2% | $493.0M | 0.6% | Mar 31, 2026 | |
| VANGUARD FIDUCIARY TRUST CO | 13F | 1,201,062 | +1,201,062 new | $470.5M | 0.5% | Mar 31, 2026 | |
| Holocene Advisors, LP | 13F | 1,087,617 | +328,503 +43.3% | $426.1M | 0.5% | Mar 31, 2026 | |
| Bank of New York Mellon Corp | 13F | 1,058,303 | -183,648 -14.8% | $414.6M | 0.5% | Mar 31, 2026 | |
| ROYAL BANK OF CANADA | 13F | 1,013,493 | -20,891 -2.0% | $397.0M | 0.5% | Mar 31, 2026 | |
| BANK OF MONTREAL /CAN/ | 13F | 1,008,491 | +214,448 +27.0% | $395.1M | 0.4% | Mar 31, 2026 | |
| AQR CAPITAL MANAGEMENT LLC | 13F | 1,001,039 | +148,567 +17.4% | $384.0M | 0.4% | Mar 31, 2026 | |
| JANUS HENDERSON GROUP PLC | 13F | 967,528 | +943,170 +3872.1% | $379.0M | 0.4% | Mar 31, 2026 | |
| Russell Investments Group, Ltd. | 13F | 966,461 | +9,754 +1.0% | $376.6M | 0.4% | Mar 31, 2026 | |
| Amundi | 13F | 965,565 | +235,359 +32.2% | $378.3M | 0.4% | Mar 31, 2026 | |
| Polar Capital Holdings Plc | 13F | 933,859 | -295,551 -24.0% | $365.8M | 0.4% | Mar 31, 2026 | |
| Value Aligned Research Advisors, LLC | 13F | 914,657 | +788,375 +624.3% | $358.3M | 0.4% | Mar 31, 2026 | |
| CANADA PENSION PLAN INVESTMENT BOARD | 13F | 883,574 | -25,820 -2.8% | $346.1M | 0.4% | Mar 31, 2026 | |
| DIMENSIONAL FUND ADVISORS LP | 13F | 836,018 | -63,048 -7.0% | $327.2M | 0.4% | Mar 31, 2026 | |
| National Pension Service | 13F | 827,761 | -169,462 -17.0% | $324.3M | 0.4% | Mar 31, 2026 | |
| Nuveen, LLC | 13F | 771,379 | -9,222 -1.2% | $302.2M | 0.3% | Mar 31, 2026 | |
| Atalan Capital Partners, LP | 13F | 718,800 | -27,800 -3.7% | $281.6M | 0.3% | Mar 31, 2026 | |
| Swedbank AB | 13F | 709,160 | +285,949 +67.6% | $277.8M | 0.3% | Mar 31, 2026 | |
| BARCLAYS PLC | 13F | 669,828 | -109,983 -14.1% | $262.4M | 0.3% | Mar 31, 2026 | |
| Swiss National Bank | 13F | 639,400 | +55,900 +9.6% | $250.5M | 0.3% | Mar 31, 2026 | |
| UBS Group AG | 13F | 632,683 | +75,350 +13.5% | $247.9M | 0.3% | Mar 31, 2026 | |
| ACADIAN ASSET MANAGEMENT LLC | 13F | 604,893 | -66,007 -9.8% | $236.9M | 0.3% | Mar 31, 2026 | |
| BNP PARIBAS FINANCIAL MARKETS | 13F | 590,505 | -231,306 -28.1% | $231.3M | 0.3% | Mar 31, 2026 | |
| Castle Hook Partners LP | 13F | 561,647 | -240,767 -30.0% | $220.0M | 0.3% | Mar 31, 2026 | |
| Point72 Asset Management, L.P. | 13F | 546,378 | +148,784 +37.4% | $214.0M | 0.2% | Mar 31, 2026 |
Page 1 of 20
Derivatives Institutional Owners
13F put/call positions · excluded from ownership totals| Type | Period | |||||
|---|---|---|---|---|---|---|
| JANE STREET GROUP, LLC | Put | 3,822,900 | +206,200 +5.7% | $1.5B | Mar 31, 2026 | |
| WELLS FARGO & COMPANY/MN | Put | 3,200,000 | +0 +0.0% | $1.3B | Mar 31, 2026 | |
| CITADEL ADVISORS LLC | Put | 2,022,300 | -998,500 -33.1% | $792.3M | Mar 31, 2026 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Put | 1,813,500 | -458,100 -20.2% | $710.5M | Mar 31, 2026 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Call | 1,328,300 | -87,100 -6.2% | $520.4M | Mar 31, 2026 | |
| CITADEL ADVISORS LLC | Call | 1,199,700 | +145,900 +13.8% | $470.0M | Mar 31, 2026 | |
| JANE STREET GROUP, LLC | Call | 977,100 | +248,500 +34.1% | $382.8M | Mar 31, 2026 | |
| Walleye Trading LLC | Call | 410,700 | -112,000 -21.4% | $160.9M | Mar 31, 2026 | |
| Walleye Trading LLC | Put | 311,900 | -420,500 -57.4% | $122.2M | Mar 31, 2026 | |
| D. E. Shaw & Co., Inc. | Put | 287,800 | -22,100 -7.1% | $112.7M | Mar 31, 2026 | |
| MILLENNIUM MANAGEMENT LLC | Call | 243,400 | -400 -0.2% | $95.4M | Mar 31, 2026 | |
| D. E. Shaw & Co., Inc. | Call | 232,400 | -23,800 -9.3% | $91.0M | Mar 31, 2026 | |
| Squarepoint Ops LLC | Call | 191,100 | -416,700 -68.6% | $74.9M | Mar 31, 2026 | |
| PEAK6 LLC | Put | 180,500 | -92,100 -33.8% | $70.7M | Mar 31, 2026 | |
| MILLENNIUM MANAGEMENT LLC | Put | 170,400 | +57,400 +50.8% | $66.8M | Mar 31, 2026 | |
| GOLDMAN SACHS GROUP INC | Call | 136,700 | -34,300 -20.1% | $53.6M | Mar 31, 2026 | |
| Squarepoint Ops LLC | Put | 125,700 | -74,100 -37.1% | $49.2M | Mar 31, 2026 | |
| Point72 Asset Management, L.P. | Call | 88,600 | -46,800 -34.6% | $34.7M | Mar 31, 2026 | |
| UBS Group AG | Call | 81,146 | -18,554 -18.6% | $31.8M | Mar 31, 2026 | |
| CAPITAL FUND MANAGEMENT S.A. | Call | 65,200 | -136,000 -67.6% | $25.5M | Mar 31, 2026 | |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | Put | 60,000 | +60,000 new | $23.5M | Mar 31, 2026 | |
| Point72 Asset Management, L.P. | Put | 58,000 | -113,300 -66.1% | $22.7M | Mar 31, 2026 | |
| CITIGROUP INC | Put | 55,500 | -30,000 -35.1% | $21.7M | Mar 31, 2026 | |
| WOLVERINE ASSET MANAGEMENT LLC | Put | 55,000 | -50,000 -47.6% | $21.5M | Mar 31, 2026 | |
| MARSHALL WACE, LLP | Put | 41,000 | +32,000 +355.6% | $16.1M | Mar 31, 2026 | |
| CITIGROUP INC | Call | 37,000 | -179,400 -82.9% | $14.5M | Mar 31, 2026 | |
| NOMURA HOLDINGS INC | Put | 36,000 | +36,000 new | $14.1M | Mar 31, 2026 | |
| Parallax Volatility Advisers, L.P. | Put | 34,000 | +4,000 +13.3% | $13.3M | Mar 31, 2026 | |
| CAPITAL FUND MANAGEMENT S.A. | Put | 32,700 | -164,300 -83.4% | $12.8M | Mar 31, 2026 | |
| Caption Management, LLC | Call | 30,000 | +0 +0.0% | $11.8M | Mar 31, 2026 | |
| Alphadyne Asset Management LP | Put | 28,100 | +25,800 +1121.7% | $11.0M | Mar 31, 2026 | |
| Sculptor Capital LP | Put | 27,500 | +0 +0.0% | $10.8M | Mar 31, 2026 | |
| M&G PLC | Put | 26,800 | -4,100 -13.3% | $10.5M | Mar 31, 2026 | |
| CAPSTONE INVESTMENT ADVISORS, LLC | Put | 26,700 | +17,000 +175.3% | $10.5M | Mar 31, 2026 | |
| TUDOR INVESTMENT CORP ET AL | Call | 25,200 | -157,400 -86.2% | $9.9M | Mar 31, 2026 | |
| Jain Global LLC | Put | 25,000 | +25,000 new | $9.8M | Mar 31, 2026 | |
| UBS Group AG | Put | 25,000 | -8,800 -26.0% | $9.8M | Mar 31, 2026 | |
| Jain Global LLC | Call | 25,000 | +25,000 new | $9.8M | Mar 31, 2026 | |
| Walleye Capital LLC | Call | 24,300 | -3,800 -13.5% | $9.5M | Mar 31, 2026 | |
| TWO SIGMA INVESTMENTS, LP | Put | 24,200 | -273,200 -91.9% | $9.5M | Mar 31, 2026 | |
| WELLS FARGO & COMPANY/MN | Call | 22,600 | +22,600 new | $8.9M | Mar 31, 2026 | |
| Caption Management, LLC | Put | 22,500 | +22,500 new | $8.8M | Mar 31, 2026 | |
| Tidal Investments LLC | Put | 22,300 | +22,300 new | $8.7M | Mar 31, 2026 | |
| Walleye Capital LLC | Put | 21,200 | -16,600 -43.9% | $8.3M | Mar 31, 2026 | |
| Oribel Capital Management, LP | Put | 20,200 | +20,200 new | $7.9M | Mar 31, 2026 | |
| TUDOR INVESTMENT CORP ET AL | Put | 20,200 | -56,400 -73.6% | $7.9M | Mar 31, 2026 | |
| TWO SIGMA INVESTMENTS, LP | Call | 20,000 | +1,000 +5.3% | $7.8M | Mar 31, 2026 | |
| Qube Research & Technologies Ltd | Put | 18,200 | -48,500 -72.7% | $7.1M | Mar 31, 2026 | |
| Alphadyne Asset Management LP | Call | 16,300 | +16,300 new | $6.4M | Mar 31, 2026 | |
| PEAK6 LLC | Call | 15,700 | -11,600 -42.5% | $6.2M | Mar 31, 2026 |
Page 1 of 2
Ownership Events — 13G / 13D
Event-driven, scanned dailyVanguard Capital Management crosses 5.0% Initial Schedule 13G · 16,318,822 shares reported | 13G | Apr 30, 2026 |
Vanguard Portfolio Management crosses 5.0% Initial Schedule 13G · 11,094,908 shares reported | 13G | Apr 29, 2026 |
Sanders Capital, LLC reports 6.0% (from 8.9%) Schedule 13G/A · amendment | 13G/A | Apr 16, 2026 |
JPMORGAN CHASE & CO. falls below 5% (from 5.6%) Schedule 13G/A · position exited | 13G/A | Nov 4, 2025 |
JPMORGAN CHASE & CO. reports 5.6% (from 8.4%) Schedule 13G/A · amendment | 13G/A | Oct 31, 2025 |
Capital Research Global Investors falls below 5% (from 7.4%) Schedule 13G/A · position exited | 13G/A | Aug 13, 2025 |
JPMORGAN CHASE & CO. reports 8.4% (from 10.1%) Schedule 13G/A · amendment | 13G/A | Jul 22, 2025 |
Sanders Capital, LLC reports 8.9% (from 7.4%) Schedule 13G/A · amendment | 13G/A | May 14, 2025 |
JPMORGAN CHASE & CO. reports 10.1% (from 8.9%) Schedule 13G/A · amendment | 13G/A | May 5, 2025 |
BlackRock, Inc. reports 6.1% Schedule 13G/A · amendment | 13G/A | Apr 23, 2025 |
Quarterly holdings from SEC Form 13F-HR structured data sets (filed within 45 days of quarter end); 5%+ ownership events from Schedule 13G/13D filings scanned daily via EDGAR. Each row links to the source filing. Est. Avg Cost is a rolling-average estimate — each quarter's added shares priced at that quarter's 13F value ÷ shares, split-adjusted, with history beginning 2024-Q2; positions with one quarter of history or a data-quality flag show “—”.