# AMKOR TECHNOLOGY INC COM

AMKOR TECHNOLOGY INC COM is a security (CUSIP 031652100) tracked across SEC portfolio filings. 607 institutional managers reported $5.7B on Form 13F as of 2026-06-30; 46 registered fund positions totaling $326.4M via N-PORT as of 2026-06-30.

## Summary

- Issuer: AMKOR TECHNOLOGY INC
- Class: COM
- CUSIP: 031652100
- Asset category: EC
- 13F holders: 607
- 13F value: $5.7B
- 13F period: 2026-06-30
- N-PORT fund positions: 46
- N-PORT value: $326.4M
- N-PORT report: 2026-06-30

## Top institutional holders (Form 13F)

_Showing 15 of 607 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $620.0M | 15,704,172 |
| BlackRock, Inc. | New York, NY | $584.0M | 12,968,765 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $494.9M | 10,991,469 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $223.0M | 5,406,545 |
| PRINCIPAL FINANCIAL GROUP INC | DES MOINES, IA | $169.8M | 1,970,200 |
| STATE STREET CORP | BOSTON, MA | $163.4M | 3,628,542 |
| [Fisher Asset Management, LLC](https://search.stillhousedata.com/firm/107342) | PLANO, TX | $157.1M | 1,821,547 |
| [EARNEST PARTNERS LLC](https://search.stillhousedata.com/firm/107926) | ATLANTA, GA | $154.5M | 3,431,843 |
| JANE STREET GROUP, LLC | NEW YORK, NY | $144.1M | 2,329,820 |
| [AQR CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/111883) | Greenwich, CT | $141.4M | 3,242,130 |
| [Point72 Asset Management, L.P.](https://search.stillhousedata.com/firm/283077) | Stamford, CT | $141.2M | 2,993,434 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $123.0M | 2,730,508 |
| AMERICAN CENTURY COMPANIES INC | KANSAS CITY, MO | $122.2M | 2,713,260 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $94.6M | 2,101,538 |
| Bank of New York Mellon Corp | NEW YORK, NY | $90.7M | 1,051,327 |

## Top fund holders (N-PORT)

_Showing 15 of 46 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $154.4M | 63.77% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $57.2M | 7.02% |
| [VANGUARD STRATEGIC EQUITY FUND](https://search.stillhousedata.com/fund/S000002593) | VANGUARD HORIZON FUNDS | $22.8M | 22.58% |
| [LORD ABBETT DEVELOPING GROWTH FUND INC](https://search.stillhousedata.com/fund/S000006834) | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $22.8M | 102.67% |
| [T. Rowe Price Science & Technology Fund, Inc.](https://search.stillhousedata.com/fund/S000002119) | T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC. | $18.7M | 17.41% |
| [Columbia Mid Cap Index Fund](https://search.stillhousedata.com/fund/S000010826) | COLUMBIA FUNDS SERIES TRUST | $5.7M | 22.24% |
| [VANGUARD U.S. MOMENTUM FACTOR ETF](https://search.stillhousedata.com/fund/S000061302) | VANGUARD WELLINGTON FUND | $4.5M | 24.69% |
| [Fidelity Nasdaq Composite Index ETF](https://search.stillhousedata.com/fund/S000006011) | Fidelity Commonwealth Trust | $4.1M | 3.76% |
| [Disciplined Value Fund](https://search.stillhousedata.com/fund/S000005979) | American Century Quantitative Equity Funds, Inc. | $3.9M | 20.87% |
| [Large Cap Index Master Portfolio](https://search.stillhousedata.com/fund/S000033023) | Master Investment Portfolio | $3.3M | 0.91% |
| [BNY Mellon Midcap Index Fund, Inc.](https://search.stillhousedata.com/fund/S000000078) | BNY MELLON MIDCAP INDEX FUND, INC. | $3.2M | 23.11% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $3.1M | 0.53% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $2.7M | 0.88% |
| [T. Rowe Price New Horizons Fund, Inc.](https://search.stillhousedata.com/fund/S000002106) | T. ROWE PRICE NEW HORIZONS FUND, INC. | $2.4M | 1.91% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $2.3M | 1.08% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/031652100.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.