O'SHAUGHNESSY ASSET MANAGEMENT, LLC
Position in AMKR — Amkor Technology, Inc.
CIK 1423442
Stamford, CT
Position in AMKR
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$1,298,192
+$741,171 QoQ
Shares Held
15,055
+21.7% QoQ
Ownership
0.006%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#274
of 642 holders
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in AMKR Over Time
Shares Held
Position Value (USD)
Position in Semiconductor Equipment & Materials
Technology · as of Jun 30, 2026O'SHAUGHNESSY ASSET MANAGEMENT, LLC holds $450,417,731 across 17 Semiconductor Equipment & Materials names. AMKR ranks #10 (0.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | LRCX |
Lam Research Corp
|
297,425 | $128,883,174 | |
| 2 | KLAC |
Kla Corp
|
363,574 | $109,693,911 | |
| 3 | AMAT |
Applied Materials Inc /De
|
150,414 | $108,749,322 | |
| 4 | ASML |
Asml Holding NV
|
39,105 | $77,797,047 | |
| 5 | TER |
Teradyne, Inc
|
15,210 | $7,359,206 | |
| 6 | PLAB |
Photronics Inc
|
127,481 | $4,146,956 | |
| 7 | Q |
Qnity Electronics, Inc.
|
25,339 | $4,138,112 | |
| 8 | ENTG |
Entegris Inc
|
11,973 | $2,153,463 |
All Filings in AMKR
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,298,192 | 15,055 | Shares | Sole | 2026-08-13 | |
| 2026-03-31 | $557,021 | 12,370 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $386,864 | 9,799 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $272,554 | 9,597 | Shares | Sole | 2025-11-13 | |
| 2025-03-31 | $353,434 | 19,570 | Shares | Sole | 2025-05-13 | |
| 2024-12-31 | $952,944 | 37,094 | Shares | Sole | 2025-02-12 | |
| 2024-09-30 | $2,127,648 | 69,531 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $2,330,964 | 58,245 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $1,854,734 | 57,529 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $2,053,624 | 61,726 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $1,406,465 | 62,233 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $2,180,823 | 73,305 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $1,686,252 | 64,806 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $1,028,526 | 42,891 | Shares | Sole | 2023-02-10 | |
| 2022-09-30 | $583,348 | 34,214 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $526,077 | 31,037 | Shares | Sole | 2022-08-11 | |
| 2022-03-31 | $1,585,646 | 73,004 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $2,924,401 | 117,967 | Shares | Defined | 2022-02-11 | |
| 2021-09-30 | $3,384,342 | 135,645 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $3,356,145 | 141,789 | Shares | Sole | 2021-08-09 | |
| 2021-03-31 | $3,326,773 | 140,311 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $1,765,460 | 117,073 | Shares | Sole | 2021-02-11 | |
| 2020-09-30 | $1,303,332 | 116,369 | Shares | Sole | 2020-11-12 | |
| 2020-06-30 | $1,212,202 | 98,473 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $194,438 | 24,960 | Shares | Sole | 2020-05-13 | |
| No filing history on record for this holder in this stock. | ||||||