Amkor Technology, Inc.
MX ˙ BMV ˙ US0316521006
SecurityMX:AMKR / Amkor Technology, Inc.
InstitutionCWM Advisors, LLC
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
CWM Advisors, LLC closes position in AMKR / Amkor Technology, Inc.

On May 13, 2026 - CWM Advisors, LLC filed a 13F-HR/A form disclosing ownership of 0 shares of Amkor Technology, Inc. (MX:AMKR) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 43,594 shares of Amkor Technology, Inc..

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 0 -100.00 0
2026-04-23 2026-03-31 13F AMKOR TECHNOLOGY COM 031652100 46,928 3,334 7.65 2,113 22.78 0.1739
2026-02-17 2025-12-31 13F AMKOR TECHNOLOGY COM 031652100 43,594 27,677 173.88 1,721 280.75 0.1549
2025-10-15 2025-09-30 13F AMKOR TECHNOLOGY COM 031652100 15,917 -2,676 -14.39 452 15.90 0.0440
2025-07-24 2025-06-30 13F AMKOR TECHNOLOGY COM 031652100 18,593 -495 -2.59 390 13.37 0.0425
2025-06-03 2025-03-31 13F AMKOR TECHNOLOGY COM 031652100 19,088 3,446 22.03 345 -14.21 0.0410
2025-01-17 2024-12-31 13F AMKOR TECHNOLOGY COM 031652100 15,642 2,163 16.05 402 -2.67 0.0450
2024-10-10 2024-09-30 13F AMKOR TECHNOLOGY COM 031652100 13,479 -14,999 -52.67 412 -63.83 0.0422
2024-08-12 2024-06-30 13F AMKOR TECHNOLOGY COM 031652100 28,478 17,326 155.36 1,140 217.27 0.1314
2024-05-07 2024-03-31 13F AMKOR TECHNOLOGY COM 031652100 11,152 -362 -3.14 360 -6.27 0.0368
2024-02-12 2023-12-31 13F AMKOR TECHNOLOGY COM 031652100 11,514 -30,067 -72.31 383 -59.21 0.0421
2023-10-26 2023-09-30 13F AMKOR TECHNOLOGY COM 031652100 41,581 31,053 294.96 940 200.00 0.1200
2023-07-31 2023-06-30 13F AMKOR TECHNOLOGY COM 031652100 10,528 16 0.15 313 14.65 0.0379
2023-04-24 2023-03-31 13F AMKOR TECHNOLOGY COM 031652100 10,512 712 7.27 274 16.17 0.0348
2023-01-26 2022-12-31 13F AMKOR TECHNOLOGY COM 031652100 9,800 -2,408 -19.72 235 12.98 0.0302
2022-11-07 2022-09-30 13F AMKOR TECHNOLOGY COM 031652100 12,208 -222 -1.79 208 -1.42 0.0294
2022-08-10 2022-06-30 13F AMKOR TECHNOLOGY COM 031652100 12,430 1,706 15.91 211 -9.44 0.0280
2022-04-21 2022-03-31 13F AMKOR TECHNOLOGY COM 031652100 10,724 713 7.12 233 -6.05 0.0270
2022-02-14 2021-12-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 10,011 1,365 15.79 248 14.81 0.0284
2021-11-09 2021-09-30 13F AMKOR TECHNOLOGY COM 031652100 8,646 -9,042 -51.12 216 -48.45 0.0273
2021-08-10 2021-06-30 13F AMKOR TECHNOLOGY COM 031652100 17,688 536 3.12 419 2.95 0.0551
2021-04-30 2021-03-31 13F AMKOR TECHNOLOGY COM 031652100 17,152 -3,308 -16.17 407 31.72 0.0624
2021-02-12 2020-12-31 13F AMKOR TECHNOLOGY COM 031652100 20,460 4,962 32.02 309 77.59 0.0683
2020-11-16 2020-09-30 13F AMKOR TECHNOLOGY COM 031652100 15,498 -3,040 -16.40 174 -23.68 0.0479
2020-08-12 2020-06-30 13F AMKOR TECHNOLOGY COM 031652100 18,538 -6,642 -26.38 228 16.33 0.0787
2020-05-08 2020-03-31 13F AMKOR TECHNOLOGY COM 031652100 25,180 11,761 87.64 196 12.64 0.0783
2020-01-24 2019-12-31 13F AMKOR TECHNOLOGY COM 031652100 13,419 -7,100 -34.60 174 -6.95 0.0624
2019-11-13 2019-09-30 13F AMKOR TECHNOLOGY COM 031652100 20,519 -3,336 -13.98 187 5.06 0.0713
2019-07-16 2019-06-30 13F AMKOR TECHNOLOGY COM 031652100 23,855 6,215 35.23 178 17.88 0.0749
2019-05-16 2019-03-31 13F AMKOR TECHNOLOGY COM 031652100 17,640 3,133 21.60 151 58.95 0.0701
2019-02-21 2018-12-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 14,507 382 2.70 95 -8.65 0.0639
2019-02-01 2018-12-31 13F AMKOR TECHNOLOGY COM 031652100 14,507 382 95
2019-02-21 2018-09-30 13F/A-1 AMKOR TECHNOLOGY COM 031652100 14,125 3,867 37.70 104 18.18 0.0641
2018-11-07 2018-09-30 13F AMKOR TECHNOLOGY COM 031652100 14,125 3,867 104
2019-02-21 2018-06-30 13F/A-1 AMKOR TECHNOLOGY COM 031652100 10,258 10,258 88 0.0625
2018-07-19 2018-06-30 13F AMKOR TECHNOLOGY COM 031652100 10,258 10,258 88
2019-02-22 2018-03-31 13F/A-1 Amkor Technology COM 031652100 0 -5,599 -100.00 0 -100.00
2019-02-21 2017-12-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 5,599 5,599 56 0.0476
2018-02-15 2017-12-31 13F Amkor Technology COM 031652100 5,599 56 0.0446
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.