Amkor Technology, Inc. (AMKR) ownership: Top institutional holder: VANGUARD GROUP INC ($620.00M). Insider activity: Net Seller (0 buys, 20 sells). 3 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 15704172.00 | $620.00M | 2025-12-31 |
| BlackRock, Inc. | 12968765.00 | $583.98M | 2026-03-31 |
| DIMENSIONAL FUND ADVISORS LP | 10991469.00 | $494.88M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 9095848.00 | $409.59M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 5434318.00 | $244.71M | 2026-03-31 |
| JPMORGAN CHASE & CO | 5406545.00 | $223.02M | 2026-03-31 |
| STATE STREET CORP | 3628542.00 | $163.39M | 2026-03-31 |
| EARNEST PARTNERS LLC | 3431843.00 | $154.54M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-09 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.