Security key
031652100
AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (AMKR)
CUSIP: 031652100
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Total 13F shares
- 107,601,765
- Total 13F value
- $3,056,601,018
- Share change
- -5,187,965
- Put/Call ratio
- 105%
- SEC-reported price per share
- $28.40
- Number of holders
- 380
- Value change
- -$122,745,222
- Number of buys
- 198
- Number of sells
- 158
- Shares outstanding
- 247,825,997
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
380
Top holders
10
AMKR full security history
Ownership snapshot
Full 13F holder table
AMKOR TECHNOLOGY, INC. SEC filings
AMKOR TECHNOLOGY, INC. company facts
Broader feeds
Ownership snapshot
Top reported holders of AMKR - AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
David D. Kim
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
01 Aug 2025
3/4/5
13F
Lead comparable stake: 2.6%
Showing 1-6 of 15 holder rows.
Quick read
David D. Kim leads the comparable SEC ownership view at 2.6%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens David D. Kim's linked filing trail.
Comparable ownership
Top 5
David D. Kim
2.6%
SUJODA Investments, LP
1.5%
Sujoda Management, LLC
1.5%
VANGUARD GROUP INC
6.1%
BlackRock, Inc.
6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| David D. Kim |
3/4/5
Member of 10% owner group (5)
|
2.6%
|
$141,980,797
6,496,738 shares
|
— | 01 Aug 2025 |
| SUJODA Investments, LP |
3/4/5
Member of 10% owner group (2)
|
1.5%
|
$82,800,116
3,789,479 shares
|
— | 01 Aug 2025 |
| Sujoda Management, LLC |
3/4/5
Member of 10% owner group (4)
|
1.5%
|
$82,800,116
3,789,479 shares
|
— | 01 Aug 2025 |
| VANGUARD GROUP INC |
13F
Company
|
6.1%
|
$316,779,968
15,091,947 shares
|
— | 30 Jun 2025 |
| BlackRock, Inc. |
13F
Company
|
6%
|
$312,859,891
14,905,188 shares
|
— | 30 Jun 2025 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
5.4%
|
$278,704,638
13,277,785 shares
|
— | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
380
Shares
107,601,765
Rows available
380
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
342
Q3 2025 holders
380
Holder diff
38
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|