Amkor Technology
AMKR
52.27
-1.12
-2.10%
Amkor Technology
US · AMKR
#1243 by market cap
Listed 1970
52.27
-1.12
-2.10%
Live - 5344 symbols - heartbeat 126s ago
· 2026-10-08 06:49
Pre-market
51.00
-2.43%
After-hours
52.59
+0.62%
Overnight
51.51
-1.45%
- Market cap
- 12.99B
- P/E (TTM)i
- 23.44
- P/Bi
- 2.79
- EPSi
- 1.50
- Div yieldi
- 0.64%
- 52W posi
- 34%
Reader sentiment
Are you bullish or bearish on AMKR?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Distributing
- The number of reporting institutions decreased by 6 in the most recent period (2026/Q3).
- Total institutional ownership fell 0.2 percentage points.
Institutional ownership
- Held by institutions
- 68.34% -0.23pp
- Institutions
- 734 -6
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
AlignedInstitutions trimmed shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two line up.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund35.39%
Individual/Insider35.08%
Private Company22.06%
Hedge Fund6.35%
Public Company3.10%
Sovereign Wealth Fund0.60%
Government Pension Fund0.43%
Insurance Company0.15%
Top holders as of 2026-07-20
James Kim
18.27% · 45.40M sh
Sujochil, LP
7.84% · 19.48M sh
Susan Kim
7.60% · 18.87M sh
Susan Y. Kim 2012 Irrevocable Trust U/A Dated 7/26/12
6.73% · 16.71M sh
John Kim
6.72% · 16.69M sh
BlackRock
4.95% · 12.29M sh
Vanguard Portfolio Management, LLC
3.91% · 9.71M sh
Family Trust Under The John T. Kim 2018 Irrevocable Trust Agreement Dated 2/6/18
3.35% · 8.33M sh
Dimensional Fund Advisors
3.25% · 8.06M sh
Vanguard Capital Management, LLC
3.00% · 7.46M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 33 buys · 17 sells
| Name | Role | Stake |
|---|---|---|
| James Kim | Executive Chairperson | 18.27% |
| Susan Kim | Executive Vice Chairperson | 7.60% |
| John Kim | Former Executive Vice Chairperson | 6.72% |
| Marie Rutten Guillaume | Former Executive Vice President of Advanced Products | 0.19% |
| Robert Randolph Morse | Independent Director | 0.05% |
| Megan Faust | Chief Financial Officer | 0.05% |
| David Watson | Independent Director | 0.05% |
| Gil Tily | Independent Director | 0.05% |
| Roger Carolin | Independent Director | 0.04% |
| Mary McCourt | Independent Director | 0.03% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-10-01 | Douglas Alexander | Independent Director | Intent to Sell (Form 144) | -5,000 | $55.00 |
| 2026-09-21 | Winston Churchill | Lead Independent Director | Other Derivative Acquisition | +4 | -- |
| 2026-09-21 | Douglas Alexander | Independent Director | Other Derivative Acquisition | +45 | -- |
| 2026-09-21 | Roger Carolin | Independent Director | Other Derivative Acquisition | +31 | -- |
| 2026-09-21 | Susan Kim | Executive Vice Chairperson | Other Derivative Acquisition | +4 | -- |
| 2026-09-21 | Robert Randolph Morse | Independent Director | Other Derivative Acquisition | +31 | -- |
| 2026-09-21 | David Watson | Independent Director | Other Derivative Acquisition | +4 | -- |
| 2026-09-21 | Gil Tily | Independent Director | Other Derivative Acquisition | +4 | -- |
| 2026-09-21 | Mary McCourt | Independent Director | Other Derivative Acquisition | +16 | -- |
| 2026-09-21 | Marie Rutten Guillaume | Former Executive Vice President of Advanced Products | Other Derivative Acquisition | +4 | -- |
| 2026-09-21 | Daniel J. Liao | Independent Director | Other Derivative Acquisition | +18 | -- |
| 2026-09-07 | Megan Faust | Chief Financial Officer | Automatic Disposition | -1,000 | $49.05 |
| 2026-08-16 | Mark Rogers | General Counsel | Derivative Exercise and Sale | -5,000 | $7.40–59.78 |
| 2026-08-10 | Megan Faust | Chief Financial Officer | Automatic Disposition | -1,000 | $54.45 |
| 2026-08-06 | Douglas Alexander | Independent Director | Derivative Exercise and Sale | -5,000 | $8.51–55.81 |
| 2026-08-05 | Marie Rutten Guillaume | Former Executive Vice President of Advanced Products | Open Market Disposition | -50,000 | $54.50–55.35 |
| 2026-07-29 | Winston Churchill | Lead Independent Director | Other Disposition | -100 | -- |
| 2026-07-29 | Kevin Engel | Executive Vice President of Business Units | Open Market Disposition | -3,221 | $47.00 |
| 2026-07-19 | James Kim | Executive Chairperson | Derivative Exercise and Retained | +450,000 | $9.48–9.86 |
| 2026-07-15 | Mark Rogers | General Counsel | Derivative Exercise and Sale | -5,000 | $7.40–65.12 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 06:49:00 · For reference only, not investment advice and not tailored to your situation.