Who owns Amkor Technology (AMKR)
Which tracked institutional funds hold AMKR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AMKR company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on AMKR is one-sided between 2026-Q1 and 2026-Q2: 300 added or opened and 86 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
AMKR’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes AMKR more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in AMKR divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 601 tracked filers holding AMKR, 367 increased or opened the position and 269 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in AMKR between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 58
- BANK OF NOVA SCOTIA$58M
- RENAISSANCE TECHNOLOGIES LLC$50M
- AGF MANAGEMENT LTD$21M
- STOREBRAND ASSET MANAGEMENT AS$18M
- THAMES CAPITAL MANAGEMENT LLC$15M
- BERKSHIRE CAPITAL HOLDINGS INC$14M
Full exits 54
- Pacer Advisors, Inc.$133M
- LSV ASSET MANAGEMENT$59M
- SG Americas Securities, LLC$44M
- SW Investment Management LLC$41M
- Burkehill Global Management, LP$36M
- HRT FINANCIAL LP$22M
Largest adds
- BlackRock, Inc.$573M
- VANGUARD PORTFOLIO MANAGEMENT LLC$428M
- VANGUARD CAPITAL MANAGEMENT LLC$333M
- JPMORGAN CHASE & CO$247M
- DIMENSIONAL FUND ADVISORS LP$200M
- STATE STREET CORP$158M
Largest trims
- JANE STREET GROUP, LLC$78M
- Bridgewater Associates, LP$71M
- AMERICAN CENTURY COMPANIES INC$31M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$27M
- Squarepoint Ops LLC$25M
- Trexquant Investment LP$25M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 12,292,760 | $1.1B | 11.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 9,712,553 | $838M | 9.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 8,064,191 | $695M | 7.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 6,701,080 | $578M | 6.5% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 5,702,608 | $470M | 5.3% | 2026-Q2 |
| STATE STREET CORP added | 3,730,584 | $322M | 3.6% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 3,231,546 | $274M | 3.1% | 2026-Q2 |
| EARNEST PARTNERS LLC trimmed | 2,852,492 | $246M | 2.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,798,149 | $241M | 2.7% | 2026-Q2 |
| Invesco Ltd. added | 2,485,794 | $214M | 2.4% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 2,477,326 | $214M | 2.4% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 1,970,200 | $170M | 1.9% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 1,836,306 | $158M | 1.8% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,832,535 | $158M | 1.8% | 2026-Q2 |
| Fisher Asset Management, LLC trimmed | 1,821,547 | $157M | 1.8% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,659,478 | $143M | 1.6% | 2026-Q2 |
| MORGAN STANLEY added | 1,525,685 | $132M | 1.5% | 2026-Q2 |
| NORGES BANK added | 1,477,233 | $127M | 1.4% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 1,161,478 | $100M | 1.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 1,069,101 | $92M | 1.0% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 1,055,656 | $91M | 1.0% | 2026-Q2 |
| Bank of New York Mellon Corp added | 1,051,327 | $91M | 1.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,046,405 | $90M | 1.0% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 1,028,138 | $89M | 1.0% | 2026-Q2 |
| TCW GROUP INC added | 1,027,777 | $89M | 1.0% | 2026-Q2 |
| Allianz Asset Management GmbH trimmed | 999,265 | $74M | 0.8% | 2026-Q2 |
| Aristotle Capital Management, LLC added | 998,074 | $102M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP added | 960,941 | $83M | 0.9% | 2026-Q2 |
| FMR LLC added | 836,386 | $72M | 0.8% | 2026-Q2 |
| Gotham Asset Management, LLC trimmed | 816,161 | $70M | 0.8% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 778,711 | $67M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 760,465 | $66M | 0.7% | 2026-Q2 |
| Nuveen, LLC added | 710,410 | $61M | 0.7% | 2026-Q2 |
| Bandera Partners LLC | 693,519 | $31M | 0.4% | 2026-Q2 |
| BANK OF NOVA SCOTIA added | 675,782 | $58M | 0.7% | 2026-Q2 |
| UBS Group AG trimmed | 635,436 | $55M | 0.6% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 624,860 | $54M | 0.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 622,252 | $54M | 0.6% | 2026-Q2 |
| LIGHT STREET CAPITAL MANAGEMENT, LLC added | 596,783 | $51M | 0.6% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 580,600 | $50M | 0.6% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 432,757 | $37M | 0.4% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 422,388 | $36M | 0.4% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 413,254 | $36M | 0.4% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 374,271 | $32M | 0.4% | 2026-Q2 |
| LPL Financial LLC trimmed | 367,193 | $32M | 0.4% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 361,075 | $31M | 0.3% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 341,099 | $29M | 0.3% | 2026-Q2 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 327,997 | $28M | 0.3% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 323,566 | $28M | 0.3% | 2026-Q2 |
| WORLDQUANT MILLENNIUM ADVISORS LLC added | 322,697 | $28M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 315,669 | $27M | 0.3% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 309,415 | $27M | 0.3% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 307,694 | $27M | 0.3% | 2026-Q2 |
| Man Group plc trimmed | 304,152 | $26M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 300,622 | $26M | 0.3% | 2026-Q2 |
| BARCLAYS PLC added | 280,417 | $24M | 0.3% | 2026-Q2 |
| Trexquant Investment LP trimmed | 269,554 | $23M | 0.3% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 265,073 | $23M | 0.3% | 2026-Q2 |
| Swiss National Bank added | 248,600 | $21M | 0.2% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 243,141 | $21M | 0.2% | 2026-Q2 |
| AGF MANAGEMENT LTD new | 240,001 | $21M | 0.2% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 234,812 | $20M | 0.2% | 2026-Q2 |
| CAPITAL FUND MANAGEMENT S.A. added | 221,979 | $19M | 0.2% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 215,924 | $19M | 0.2% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 209,868 | $18M | 0.2% | 2026-Q2 |
| STOREBRAND ASSET MANAGEMENT AS new | 209,749 | $18M | 0.2% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. added | 195,901 | $17M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 193,436 | $17M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 189,205 | $16M | 0.2% | 2026-Q2 |
| Corient Private Wealth LP added | 188,110 | $16M | 0.2% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 180,061 | $15M | 0.2% | 2026-Q2 |
| THAMES CAPITAL MANAGEMENT LLC new | 177,301 | $15M | 0.2% | 2026-Q2 |
| Brevan Howard Capital Management LP added | 174,482 | $15M | 0.2% | 2026-Q2 |
| ROYCE & ASSOCIATES LP trimmed | 172,054 | $15M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 171,077 | $15M | 0.2% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP added | 165,625 | $14M | 0.2% | 2026-Q2 |
| Bank Julius Baer & Co. Ltd, Zurich added | 163,526 | $14M | 0.2% | 2026-Q2 |
| Covea Finance added | 162,655 | $14M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 161,884 | $14M | 0.2% | 2026-Q2 |
| BERKSHIRE CAPITAL HOLDINGS INC new | 161,800 | $14M | 0.2% | 2026-Q2 |
| Jefferies Financial Group Inc. added | 156,449 | $13M | 0.2% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 154,417 | $13M | 0.1% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC new | 151,482 | $13M | 0.1% | 2026-Q2 |
| Jump Financial, LLC added | 150,478 | $13M | 0.1% | 2026-Q2 |
| SEVEN GRAND MANAGERS, LLC trimmed | 150,000 | $13M | 0.1% | 2026-Q2 |
| FEDERATED HERMES, INC. trimmed | 145,017 | $13M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 143,682 | $12M | 0.1% | 2026-Q2 |
| IMC-Chicago, LLC added | 140,508 | $12M | 0.1% | 2026-Q2 |
| DLD Asset Management, LP new | 140,000 | $12M | 0.1% | 2026-Q2 |
| Walleye Trading LLC added | 139,625 | $12M | 0.1% | 2026-Q2 |
| Banco Santander, S.A. new | 134,778 | $12M | 0.1% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC trimmed | 129,737 | $10M | 0.1% | 2026-Q2 |
| GROUP ONE TRADING LLC added | 129,334 | $11M | 0.1% | 2026-Q2 |
| Cerity Partners LLC added | 128,987 | $11M | 0.1% | 2026-Q2 |
| Creative Planning added | 128,201 | $11M | 0.1% | 2026-Q2 |
| Faithward Advisors, LLC trimmed | 126,921 | $11M | 0.1% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 123,535 | $11M | 0.1% | 2026-Q2 |
| Convergence Investment Partners, LLC added | 122,715 | $11M | 0.1% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC added | 121,850 | $11M | 0.1% | 2026-Q2 |
| RIPOSTE CAPITAL LLC new | 120,000 | $10M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.