Amkor Technology, Inc.
MX ˙ BMV ˙ US0316521006
SecurityMX:AMKR / Amkor Technology, Inc.
InstitutionFisher Asset Management, LLC
Latest Disclosed Ownership2,010,982 shares
Latest Disclosed Value $ 90,554,535
Fisher Asset Management, LLC reports 4.01% decrease in ownership of AMKR / Amkor Technology, Inc.

On May 5, 2026 - Fisher Asset Management, LLC filed a 13F-HR form disclosing ownership of 2,010,982 shares of Amkor Technology, Inc. (MX:AMKR) valued at $90,554,535 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 2,095,027 shares of Amkor Technology, Inc.. This represents a change in shares of -4.01% during the quarter.

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.

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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)
2026-05-05 2026-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,010,982 -84,045 -4.01 90,555 9.48 0.0307
2026-02-09 2025-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,095,027 1,407,109 204.55 82,712 323.38 0.0282
2025-11-12 2025-09-30 13F AMKOR TECHNOLOGY COM 031652100 687,918 65,485 10.52 19,537 49.54 0.0071
2025-08-13 2025-06-30 13F AMKOR TECHNOLOGY COM 031652100 622,433 -30,703 -4.70 13,065 10.76 0.0052
2025-05-14 2025-03-31 13F AMKOR TECHNOLOGY COM 031652100 653,136 11,220 1.75 11,796 -28.47 0.0051
2025-02-05 2024-12-31 13F AMKOR TECHNOLOGY COM 031652100 641,916 431,537 205.12 16,491 156.18 0.0066
2024-11-12 2024-09-30 13F AMKOR TECHNOLOGY COM 031652100 210,379 28,137 15.44 6,438 -11.74 0.0026
2024-08-14 2024-06-30 13F AMKOR TECHNOLOGY COM 031652100 182,242 101,231 124.96 7,293 179.32 0.0032
2024-05-09 2024-03-31 13F AMKOR TECHNOLOGY COM 031652100 81,011 -6,353 -7.27 2,612 -10.15 0.0012
2024-03-05 2023-12-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 87,364 2,207 2.59 2,907 51.04 0.0015
2024-02-06 2023-12-31 13F AMKOR TECHNOLOGY COM 031652100 85,052 -105 2,830 0.0014
2023-11-13 2023-09-30 13F AMKOR TECHNOLOGY COM 031652100 85,157 -41,630 -32.83 1,925 -48.98 0.0011
2023-12-12 2023-06-30 13F/A-1 AMKOR TECHNOLOGY COM 031652100 126,787 9,461 8.06 3,772 23.56 0.0021
2023-08-08 2023-06-30 13F AMKOR TECHNOLOGY COM 031652100 126,787 9,461 4 0.0021
2023-12-12 2023-03-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 117,326 66,487 130.78 3,053 305,100.00 0.0019
2023-05-01 2023-03-31 13F AMKOR TECHNOLOGY COM 031652100 50,839 0 1 0.0008
2023-02-03 2022-12-31 13F AMKOR TECHNOLOGY COM 031652100 50,839 50,839 1 0.0008
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.