Amkor Technology
AMKR
383 hedge funds and large institutions have $3.08B invested in Amkor Technology in 2025 Q3 according to their latest regulatory filings, with 77 funds opening new positions, 125 increasing their positions, 121 reducing their positions, and 40 closing their positions.
93% more first-time investments, than exits
New positions opened: 77 | Existing positions closed: 40
30% more capital invested
Capital invested by funds: $2.37B → $3.08B (+$710M)
20% more call options, than puts
Call options by funds: $33.7M | Put options by funds: $28.2M
10% more funds holding
Funds holding: 348 → 383 (+35)
3% more repeat investments, than reductions
Existing positions increased: 125 | Existing positions reduced: 121
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
2.13% less ownership
Funds ownership: 45.72% → 43.59% (-2.1%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$28.6M |
| 2 |
Invesco
Atlanta,
Georgia
|
+$16.9M |
| 3 |
Vanguard Group
Malvern,
Pennsylvania
|
+$16.6M |
| 4 |
AQR Capital Management
Greenwich,
Connecticut
|
+$15.7M |
| 5 |
N
Nuveen
Charlotte,
North Carolina
|
+$12.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
D.E. Shaw & Co
New York
|
-$29.3M |
| 2 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
-$28.9M |
| 3 |
BlackRock
New York
|
-$25.8M |
| 4 |
UIA
UG Investment Advisers
Taipei,
Taiwan
|
-$22.4M |
| 5 |
LSV Asset Management
Chicago,
Illinois
|
-$20.5M |
AMKR Hedge Fund Activity: Q3 2025 in Review
383 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Amkor Technology (AMKR) for Q3 2025, worth a combined $3.08B — up 30% from $2.37B a quarter earlier.
Buyers outnumbered sellers: 77 funds opened new AMKR positions and 40 closed out — a net gain of 37 holders — while 125 added to existing stakes and 121 trimmed.
The largest buyer was Arrowstreet Capital, adding an estimated $28.6M. The largest seller was D.E. Shaw & Co, cutting an estimated $29.3M.
- 383 institutional investors held Amkor Technology (AMKR) as of Q3 2025, up from 348 in Q2 2025.
- Funds reported $3.08B of Amkor Technology stock for Q3 2025, up 30% quarter-over-quarter.
- 77 funds opened new Amkor Technology positions in Q3 2025 and 40 closed out, a net change of +37 holders.
- The largest Amkor Technology buyer in Q3 2025 was Arrowstreet Capital, an estimated $28.6M added.
- The largest Amkor Technology seller in Q3 2025 was D.E. Shaw & Co, an estimated $29.3M sold.
Based on aggregated 13F filings for Q3 2025.