DaveManuel.com · Institutional Ownership · Who Owns It
AMKOR TECHNOLOGY INC (AMKR)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
657
Reporting holders
$10.6B
Reported value
46.9%
Of shares outstanding
3.3%
Calls
2.8%
Puts
+118
Holder change
Institutions report 116,545,322 shares against 248,452,472 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $1.1B | 12,292,760 | 0.02% | 8q | -5.2%-$58.3M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $837.5M | 9,712,553 | 0.04% | 2q | +6.8%+$53.2M |
| DIMENSIONAL FUND ADVISORS LP | $695.3M | 8,064,191 | 0.13% | 31q | -26.6%-$252.4M |
| VANGUARD CAPITAL MANAGEMENT LLC | $577.8M | 6,701,080 | 0.01% | 2q | +23.3%+$109.2M |
| JPMORGAN CHASE & CO | $470.0M | 5,702,608 | 0.03% | 31q | +5.5%+$24.4M |
| STATE STREET CORP | $321.7M | 3,730,584 | 0.01% | 31q | +2.8%+$8.8M |
| JANE STREET GROUP, LLC | $276.1M incl. $249.5M options CALL+PUT | 307,694 | 0.02% | 25q | -86.8%-$1.8B |
| AQR CAPITAL MANAGEMENT LLC | $273.8M | 3,231,546 | 0.10% | 31q | HELD |
| EARNEST PARTNERS LLC | $246.0M | 2,852,492 | 0.89% | 16q | -16.9%-$50.0M |
| GEODE CAPITAL MANAGEMENT, LLC | $241.3M | 2,798,149 | 0.01% | 31q | +2.5%+$5.8M |
| Point72 Asset Management, L.P. | $221.2M incl. $7.6M options CALL+PUT | 2,477,326 | 0.24% | 5q | -17.2%-$46.1M |
| Invesco Ltd. | $214.4M | 2,485,794 | 0.02% | 31q | +31.6%+$51.4M |
| CITADEL ADVISORS LLC | $175.2M incl. $86.5M options CALL+PUT | 1,028,138 | 0.02% | 31q | +425.0%+$141.8M |
| PRINCIPAL FINANCIAL GROUP INC | $169.8M | 1,970,200 | 0.08% | 22q | -24.9%-$56.3M |
| FIRST TRUST ADVISORS LP | $158.3M | 1,836,306 | 0.09% | 31q | +2.4%+$3.7M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $158.0M | 1,832,535 | 0.02% | 31q | -12.8%-$23.2M |
| Fisher Asset Management, LLC | $157.1M | 1,821,547 | 0.05% | 15q | -9.4%-$16.3M |
| Clal Insurance Enterprises Holdings Ltd | $152.1M | 1,764,000 | 0.68% | new | NEW |
| PRICE T ROWE ASSOCIATES INC /MD/ | $143.1M | 1,659,478 | 0.01% | 31q | +122.3%+$78.7M |
| MORGAN STANLEY | $131.6M | 1,525,685 | 0.01% | 35q | +11.1%+$13.2M |
| NORGES BANK | $127.4M | 1,477,233 | 0.01% | 32q | +8.6%+$10.1M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $121.1M incl. $88.8M options CALL+PUT | 374,271 | 0.01% | 31q | +183.4%+$78.3M |
| Qube Research & Technologies Ltd | $100.2M | 1,161,478 | 0.09% | 3q | +220.7%+$68.9M |
| TWO SIGMA INVESTMENTS, LP | $94.4M incl. $2.2M options CALL+PUT | 1,069,101 | 0.07% | 6q | -11.9%-$12.8M |
| Allianz Asset Management GmbH | $93.7M | 1,086,641 | 0.08% | 27q | -21.5%-$25.7M |
| AMERICAN CENTURY COMPANIES INC | $91.0M | 1,055,656 | 0.04% | 29q | -61.1%-$142.9M |
| Bank of New York Mellon Corp | $90.7M | 1,051,327 | 0.01% | 31q | +6.8%+$5.8M |
| GOLDMAN SACHS GROUP INC | $90.2M | 1,046,405 | 0.01% | 31q | +22.1%+$16.3M |
| TCW GROUP INC | $88.6M | 1,027,777 | 0.60% | 2q | +1712.0%+$83.7M |
| NORTHERN TRUST CORP | $82.9M | 960,941 | 0.01% | 31q | +1.8%+$1.5M |
| IMC-Chicago, LLC | $75.9M incl. $63.8M options CALL+PUT | 140,508 | 0.02% | 7q | +1292.8%+$70.5M |
| LSV ASSET MANAGEMENT | $72.8M | 844,200 | 0.13% | 31q | -35.6%-$40.2M |
| FMR LLC | $72.1M | 836,386 | 0.00% | 31q | +224.9%+$49.9M |
| Gotham Asset Management, LLC | $70.4M | 816,161 | 0.16% | 31q | -24.0%-$22.2M |
| WELLS FARGO & COMPANY/MN | $67.1M | 778,711 | 0.01% | 31q | +62.8%+$25.9M |
| VANGUARD FIDUCIARY TRUST CO | $65.6M | 760,465 | 0.01% | 2q | +6.1%+$3.8M |
| LORD, ABBETT & CO. LLC | $62.2M | 721,733 | 0.18% | 2q | +58.3%+$22.9M |
| Nuveen, LLC | $61.3M | 710,410 | 0.01% | 6q | +4.7%+$2.8M |
| D. E. Shaw & Co., Inc. | $60.8M incl. $6.9M options CALL | 624,860 | 0.03% | 9q | -58.0%-$84.0M |
| BANK OF NOVA SCOTIA | $58.3M | 675,782 | 0.09% | new | NEW |
| MILLENNIUM MANAGEMENT LLC | $55.3M incl. $1.6M options CALL+PUT | 622,252 | 0.02% | 21q | -19.5%-$13.4M |
| UBS Group AG | $54.8M | 635,436 | 0.01% | 31q | -44.1%-$43.3M |
| LIGHT STREET CAPITAL MANAGEMENT, LLC | $51.5M | 596,783 | 5.70% | 3q | +46.6%+$16.4M |
| RENAISSANCE TECHNOLOGIES LLC | $50.1M | 580,600 | 0.07% | new | NEW |
| Walleye Trading LLC | $39.6M incl. $27.6M options CALL+PUT | 139,625 | 0.05% | 5q | +44.2%+$12.2M |
| SG Americas Securities, LLC | $37.9M | 439,855 | 0.02% | 12q | -55.1%-$46.5M |
| FRANKLIN RESOURCES INC | $37.3M | 432,757 | 0.01% | 20q | +344.2%+$28.9M |
| RAYMOND JAMES FINANCIAL INC | $36.4M | 422,388 | 0.01% | 7q | -18.3%-$8.2M |
| Connor, Clark & Lunn Investment Management Ltd. | $35.6M | 413,254 | 0.07% | 3q | +220.1%+$24.5M |
| BNP PARIBAS FINANCIAL MARKETS | $34.3M incl. $17.7M options PUT | 193,436 | 0.01% | 31q | -33.0%-$16.9M |
| LPL Financial LLC | $31.7M | 367,193 | 0.01% | 23q | -56.7%-$41.5M |
| Bandera Partners LLC | $31.2M | 693,519 | 11.00% | 22q | HELD |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $31.1M | 361,075 | 0.01% | 31q | -1.6%-$493.1K |
| GROUP ONE TRADING LLC | $31.0M incl. $19.8M options CALL+PUT | 129,334 | 0.04% | 31q | HELD |
| SEI INVESTMENTS CO | $29.4M | 341,099 | 0.03% | 20q | -15.1%-$5.2M |
| SEGALL BRYANT & HAMILL, LLC | $28.3M | 327,997 | 0.34% | 9q | -26.1%-$10.0M |
| ENVESTNET ASSET MANAGEMENT INC | $27.9M | 323,566 | 0.01% | 23q | -56.3%-$36.0M |
| WORLDQUANT MILLENNIUM ADVISORS LLC | $27.8M | 322,697 | 0.10% | 2q | +881.9%+$25.0M |
| RHUMBLINE ADVISERS | $27.2M | 315,669 | 0.02% | 31q | HELD |
| PANAGORA ASSET MANAGEMENT INC | $26.7M | 309,415 | 0.08% | 4q | +3699.3%+$26.0M |
| Man Group plc | $26.2M | 304,152 | 0.04% | 3q | -35.2%-$14.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $25.9M | 300,622 | 0.00% | 14q | +2.6%+$651.0K |
| SIMPLEX TRADING, LLC | $24.6M incl. $20.4M options CALL+PUT | 49,051 | 0.01% | 30q | HELD |
| BARCLAYS PLC | $24.2M | 280,417 | 0.00% | 31q | +78.4%+$10.6M |
| Trexquant Investment LP | $23.2M | 269,554 | 0.14% | 2q | -74.7%-$68.7M |
| BANK OF AMERICA CORP /DE/ | $22.9M | 265,073 | 0.00% | 31q | -3.1%-$730.2K |
| Swiss National Bank | $21.4M | 248,600 | 0.01% | 31q | +1.7%+$353.5K |
| Assenagon Asset Management S.A. | $21.3M | 247,070 | 0.01% | 2q | +223.4%+$14.7M |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $21.0M | 243,141 | 0.09% | 2q | -77.1%-$70.6M |
| AGF MANAGEMENT LTD | $20.7M | 240,001 | 0.08% | new | NEW |
| HSBC HOLDINGS PLC | $20.6M incl. $5.1M options PUT | 180,061 | 0.01% | 11q | +143.7%+$12.1M |
| ALGERT GLOBAL LLC | $20.2M | 234,812 | 0.24% | 2q | -5.5%-$1.2M |
| CAPITAL FUND MANAGEMENT S.A. | $20.1M incl. $991.6K options CALL | 221,979 | 0.09% | 6q | +683.5%+$17.6M |
| PEAK6 LLC | $19.5M CALL+PUT | options only | 0.04% | 7q | OPTIONS |
| Squarepoint Ops LLC | $19.5M incl. $1.4M options CALL+PUT | 209,868 | 0.02% | 15q | -78.3%-$70.2M |
| Russell Investments Group, Ltd. | $18.6M | 215,924 | 0.02% | 31q | -46.0%-$15.9M |
| STOREBRAND ASSET MANAGEMENT AS | $18.1M | 209,749 | 0.04% | new | NEW |
| Walleye Capital LLC | $16.9M incl. $11.2M options CALL+PUT | 66,051 | 0.06% | 15q | HELD |
| ARISTEIA CAPITAL, L.L.C. | $16.9M | 195,901 | 0.22% | 2q | +1388.6%+$15.8M |
| TUDOR INVESTMENT CORP ET AL | $16.8M incl. $7.6M options CALL+PUT | 106,660 | 0.02% | 6q | -64.5%-$30.6M |
| ROYAL BANK OF CANADA | $16.3M | 189,205 | 0.00% | 27q | +249.6%+$11.6M |
| THAMES CAPITAL MANAGEMENT LLC | $15.3M | 177,301 | 1.26% | new | NEW |
| ROYCE & ASSOCIATES LP | $14.8M | 172,054 | 0.12% | 31q | -39.5%-$9.7M |
| Legal & General Group Plc | $14.8M | 171,077 | 0.00% | 31q | HELD |
| Brevan Howard Capital Management LP | $14.7M | 174,482 | 0.11% | 3q | +671.7%+$12.8M |
| MACKENZIE FINANCIAL CORP | $14.3M | 165,625 | 0.01% | 4q | +2630.8%+$13.8M |
| Bank Julius Baer & Co. Ltd, Zurich | $14.0M | 163,526 | 0.04% | 2q | +27.8%+$3.1M |
| Covea Finance | $14.0M | 162,655 | 0.44% | 3q | +39.3%+$4.0M |
| AMERIPRISE FINANCIAL INC | $14.0M | 161,884 | 0.00% | 31q | -8.7%-$1.3M |
| BERKSHIRE CAPITAL HOLDINGS INC | $14.0M | 161,800 | 3.02% | new | NEW |
| HRT FINANCIAL LP | $13.6M incl. $5.6M options OPT | 158,178 | 0.02% | 6q | -68.3%-$29.4M |
| Corient Private Wealth LP | $13.6M | 158,037 | 0.02% | 15q | +142.7%+$8.0M |
| Jefferies Financial Group Inc. | $13.5M | 156,449 | 0.09% | new | NEW |
| IEQ CAPITAL, LLC | $13.3M | 154,417 | 0.06% | 8q | +12.6%+$1.5M |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $13.1M | 151,482 | 0.25% | new | NEW |
| Jump Financial, LLC | $13.0M | 150,478 | 0.10% | 3q | +18.7%+$2.0M |
| SEVEN GRAND MANAGERS, LLC | $12.9M | 150,000 | 0.52% | 2q | -40.0%-$8.6M |
| FEDERATED HERMES, INC. | $12.5M | 145,017 | 0.02% | 31q | -7.4%-$992.4K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $12.4M | 143,682 | 0.01% | 31q | HELD |
| DLD Asset Management, LP | $12.1M | 140,000 | 0.80% | new | NEW |
Showing the largest 100 of 657 reported holders.
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-08 | Rutten Guillaume Marie Jean | Director | Sold | 50,000 | $3.7M |
| 2026-08-05 | Rutten Guillaume Marie Jean | Director | Sold | 25,000 | $1.4M |
| 2026-08-06 | Rutten Guillaume Marie Jean | Director | Sold | 25,000 | $1.4M |
| 2026-05-11 | Tily Gil C. | Director | Sold | 15,000 | $1.2M |
| 2026-06-16 | ROGERS MARK N | EVP & General Counsel | Sold | 5,000 | $431.0K |
| 2026-06-12 | CHURCHILL WINSTON J | Director | Sold | 5,000 | $391.0K |
| 2026-05-18 | ROGERS MARK N | EVP & General Counsel | Sold | 5,000 | $358.1K |
| 2026-07-16 | ROGERS MARK N | EVP & General Counsel | Sold | 5,000 | $325.6K |
| 2026-08-17 | ROGERS MARK N | EVP & General Counsel | Sold | 5,000 | $298.9K |
| 2026-08-07 | ALEXANDER DOUGLAS A | Director | Sold | 5,000 | $279.1K |
| 2026-10-02 | ALEXANDER DOUGLAS A | Director | Sold | 5,000 | $275.0K |
| 2026-07-30 | Engel Kevin K. | President and CEO | Sold | 3,221 | $151.4K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 167 | $130.8M | 2,520,180 | 32 | 61 | 46 | 0.0% |
| Q2 2026 | 657 | $10.6B | 116,545,322 | 171 | 212 | 196 | 6.1% |
| Q1 2026 | 539 | $5.7B | 121,385,504 | 131 | 181 | 136 | 4.6% |
| Q4 2025 | 460 | $4.9B | 114,051,279 | 107 | 117 | 149 | 7.1% |
| Q3 2025 | 391 | $3.2B | 107,953,380 | 78 | 118 | 118 | 2.0% |
| Q2 2025 | 352 | $2.6B | 113,013,911 | 52 | 138 | 116 | 9.7% |
| Q1 2025 | 352 | $2.1B | 108,815,319 | 62 | 135 | 87 | 7.6% |
| Q4 2024 | 337 | $3.0B | 109,560,936 | 28 | 121 | 116 | 6.1% |
| Q3 2024 | 362 | $3.3B | 106,952,739 | 53 | 131 | 122 | 0.9% |
| Q2 2024 | 398 | $4.4B | 107,310,710 | 90 | 129 | 114 | 1.5% |
| Q1 2024 | 337 | $3.5B | 108,941,278 | 50 | 112 | 115 | 0.9% |
| Q4 2023 | 317 | $3.6B | 106,866,309 | 43 | 105 | 100 | 1.0% |
| Q3 2023 | 307 | $2.4B | 103,747,223 | 52 | 104 | 87 | 0.8% |
| Q2 2023 | 301 | $2.9B | 96,239,132 | 46 | 84 | 112 | 1.1% |
| Q1 2023 | 292 | $2.5B | 94,992,564 | 40 | 97 | 94 | 0.8% |
| Q4 2022 | 297 | $2.3B | 94,661,085 | 63 | 76 | 109 | 1.7% |
| Q3 2022 | 257 | $1.8B | 104,500,478 | 30 | 89 | 83 | 0.4% |
| Q2 2022 | 256 | $1.8B | 108,141,021 | 25 | 104 | 74 | 0.8% |
| Q1 2022 | 271 | $2.3B | 106,482,883 | 35 | 105 | 68 | 0.6% |
| Q4 2021 | 271 | $3.6B | 143,647,081 | 31 | 89 | 83 | 0.5% |
| Q3 2021 | 267 | $3.6B | 142,483,668 | 41 | 73 | 104 | 0.6% |
| Q2 2021 | 254 | $3.5B | 147,340,591 | 37 | 66 | 91 | 0.5% |
| Q1 2021 | 258 | $3.4B | 141,231,501 | 72 | 66 | 77 | 0.7% |
| Q4 2020 | 226 | $2.1B | 135,496,904 | 38 | 56 | 81 | 0.4% |
| Q3 2020 | 211 | $1.4B | 121,856,217 | 29 | 63 | 72 | 0.3% |
| Q2 2020 | 206 | $1.6B | 132,268,371 | 41 | 58 | 82 | 0.5% |
| Q1 2020 | 198 | $1.3B | 167,704,976 | 37 | 64 | 68 | 0.3% |
| Q4 2019 | 194 | $2.0B | 150,529,310 | 43 | 56 | 67 | 0.3% |
| Q3 2019 | 169 | $1.1B | 120,845,714 | 32 | 48 | 56 | 0.2% |
| Q2 2019 | 159 | $921.7M | 123,106,608 | 23 | 57 | 51 | 0.4% |
| Q1 2019 | 172 | $1.0B | 122,520,275 | 27 | 52 | 60 | 0.2% |
| Q4 2018 | 164 | $10.9B | 1,663,991,663 | 5 | 4 | 2 | 0.0% |