Latest Period
Q1 2026
Security Snapshot
AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (AMKR) Institutional Ownership
CUSIP: 031652100
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
514
Shares (Excl. Options)
121,069,253
Price
$45.03
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- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Symbol
- AMKR on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 121,069,253
- Total 13F value
- $5,424,404,791
- Portfolio coverage rank
- 0.01%
- Share change
- +7,760,563
- Value change
- +$372,149,330
- Number of holders
- 514
- Shares outstanding
- 247,825,997
- SEC-reported price per share
- $65.75
- Insider filing price
- $65.75
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- AMKR - AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share is tracked under CUSIP 031652100.
- 514 institutions reported positions in Q1 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 454 to 514 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $4,488,716,080 to $5,424,404,791.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 514 institutions filings for Q1 2026.
Security key
031652100
Latest holder period
Q1 2026
13F holders
514
13D/G owners
2
CIK / CUSIP context first
Open Q1 2026 holders
AMKR full holder history
AMKOR TECHNOLOGY, INC. SEC filings
AMKOR TECHNOLOGY, INC. company facts
AMKOR TECHNOLOGY, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 031652100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
2
Security
AMKR
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| KIM JAMES J | 30% | -0.32% | $4,366,654,410 | 75,339,103 | 0% | John T. Kim | 01 May 2026 | |
| DIMENSIONAL FUND ADVISORS LP | 4.4% | $494,945,849 | 10,991,469 | Dimensional Fund Advisors LP | 31 Mar 2026 |
As of 31 Mar 2026, 514 institutional investors reported holding 121,069,253 shares of AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (AMKR). This represents 49% of the company’s total 247,825,997 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
35%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 5.2% | 12,968,765 | +0.35% | 0.01% | $583,983,481 |
| DIMENSIONAL FUND ADVISORS LP | 4.4% | 10,991,469 | -14% | 0.1% | $494,879,378 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.7% | 9,095,848 | 0% | 0.02% | $409,586,035 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.2% | 5,434,318 | 0% | 0.01% | $244,707,340 |
| JPMORGAN CHASE & CO | 2.2% | 5,406,545 | +1505% | 0.02% | $223,020,020 |
| STATE STREET CORP | 1.5% | 3,628,542 | +4.5% | 0.01% | $163,393,246 |
| EARNEST PARTNERS LLC | 1.4% | 3,431,843 | -9.5% | 0.64% | $154,535,890 |
| AQR CAPITAL MANAGEMENT LLC | 1.3% | 3,242,130 | -1.8% | 0.06% | $141,421,703 |
| Point72 Asset Management, L.P. | 1.2% | 2,993,434 | -2.3% | 0.23% | $134,794,333 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.1% | 2,730,508 | +22% | 0.01% | $122,976,233 |
| AMERICAN CENTURY COMPANIES INC | 1.1% | 2,713,260 | -24% | 0.06% | $122,178,143 |
| PRINCIPAL FINANCIAL GROUP INC | 1.1% | 2,622,744 | +19% | 0.06% | $118,107,208 |
| JANE STREET GROUP, LLC | 0.94% | 2,329,820 | +3578% | 0.11% | $104,911,795 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.85% | 2,101,538 | +0.1% | 0.01% | $94,632,256 |
| Fisher Asset Management, LLC | 0.81% | 2,010,982 | -4% | 0.03% | $90,554,535 |
| Invesco Ltd. | 0.76% | 1,889,405 | +69% | 0.01% | $85,079,908 |
| FIRST TRUST ADVISORS LP | 0.72% | 1,793,537 | -34% | 0.06% | $80,762,846 |
| Bridgewater Associates, LP | 0.64% | 1,580,929 | +1976% | 0.32% | $71,189,233 |
| D. E. Shaw & Co., Inc. | 0.6% | 1,488,765 | +862% | 0.05% | $67,039,088 |
| Allianz Asset Management GmbH | 0.56% | 1,384,433 | +37% | 0.07% | $62,341,017 |
| MORGAN STANLEY | 0.55% | 1,372,808 | -24% | 0% | $61,817,646 |
| LSV ASSET MANAGEMENT | 0.53% | 1,310,500 | -54% | 0.13% | $59,012,000 |
| TWO SIGMA INVESTMENTS, LP | 0.49% | 1,213,894 | +120% | 0.05% | $54,661,647 |
| UBS Group AG | 0.46% | 1,137,297 | -9.4% | 0.01% | $51,212,483 |
| Gotham Asset Management, LLC | 0.43% | 1,073,270 | -10% | 0.15% | $48,329,348 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 121,069,253 | $5,424,404,791 | +$372,149,330 | $45.03 | 514 |
| 2025 Q4 | 113,624,803 | $4,488,716,080 | +$266,263,948 | $39.48 | 454 |
| 2025 Q3 | 107,601,765 | $3,056,601,018 | -$122,745,222 | $28.40 | 380 |
| 2025 Q2 | 113,048,162 | $2,373,273,979 | +$114,953,962 | $20.99 | 342 |
| 2025 Q1 | 108,040,907 | $1,951,026,308 | -$73,920,018 | $18.06 | 342 |
| 2024 Q4 | 109,268,438 | $2,808,251,495 | +$48,269,580 | $25.69 | 329 |
| 2024 Q3 | 106,546,220 | $3,260,732,392 | -$13,756,975 | $30.60 | 355 |
| 2024 Q2 | 105,697,517 | $4,229,651,116 | +$5,014,289 | $40.02 | 390 |
| 2024 Q1 | 105,879,554 | $3,413,107,862 | +$20,011,006 | $32.24 | 334 |
| 2023 Q4 | 105,124,159 | $3,497,270,269 | +$89,633,171 | $33.27 | 313 |
| 2023 Q3 | 103,279,977 | $2,334,355,321 | +$143,785,224 | $22.60 | 302 |
| 2023 Q2 | 96,176,374 | $2,860,531,372 | +$59,728,154 | $29.75 | 296 |
| 2023 Q1 | 94,043,251 | $2,446,697,086 | -$4,834,836 | $26.02 | 288 |
| 2022 Q4 | 94,611,993 | $2,268,275,281 | +$15,076,608 | $23.98 | 286 |
| 2022 Q3 | 94,297,197 | $1,607,072,114 | -$14,343,196 | $17.05 | 256 |
| 2022 Q2 | 95,047,466 | $1,610,443,259 | +$20,533,305 | $16.95 | 249 |
| 2022 Q1 | 94,191,158 | $2,046,902,897 | -$7,662,310 | $21.72 | 269 |
| 2021 Q4 | 94,202,670 | $2,333,010,085 | -$26,740,663 | $24.79 | 262 |
| 2021 Q3 | 94,042,864 | $2,349,598,089 | +$12,351,091 | $24.95 | 259 |
| 2021 Q2 | 93,795,445 | $2,220,006,298 | -$50,219,832 | $23.67 | 248 |
| 2021 Q1 | 95,959,772 | $2,276,575,528 | +$109,696,190 | $23.71 | 251 |
| 2020 Q4 | 93,431,334 | $1,410,249,949 | -$1,448,670 | $15.08 | 218 |
| 2020 Q3 | 93,110,951 | $1,043,074,900 | -$30,643,497 | $11.20 | 208 |
| 2020 Q2 | 95,773,944 | $1,178,959,300 | +$41,595,176 | $12.31 | 199 |
| 2020 Q1 | 93,315,283 | $726,805,605 | -$25,793,054 | $7.79 | 196 |