Amkor Technology, Inc.
MX ˙ BMV ˙ US0316521006
SecurityMX:AMKR / Amkor Technology, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership60,301 shares
Latest Disclosed Value $ 2,715
Amalgamated Bank reports 11.66% increase in ownership of AMKR / Amkor Technology, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 60,301 shares of Amkor Technology, Inc. (MX:AMKR) valued at $2,715 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 54,006 shares of Amkor Technology, Inc.. This represents a change in shares of 11.66% 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)
2026-05-08 2026-03-31 13F AMKOR TECHNOLOGY COM 031652100 60,301 6,295 11.66 3 0.00 0.0208
2026-02-05 2025-12-31 13F AMKOR TECHNOLOGY COM 031652100 54,006 1,850 3.55 2 100.00 0.0154
2025-10-29 2025-09-30 13F AMKOR TECHNOLOGY COM 031652100 52,156 233 0.45 1 0.00 0.0106
2025-08-04 2025-06-30 13F AMKOR TECHNOLOGY COM 031652100 51,923 -845 -1.60 1 0.0084
2025-04-25 2025-03-31 13F AMKOR TECHNOLOGY COM 031652100 52,768 -1,304 -2.41 1 -100.00 0.0082
2025-02-04 2024-12-31 13F AMKOR TECHNOLOGY COM 031652100 54,072 1,270 2.41 1 0.00 0.0114
2024-10-30 2024-09-30 13F AMKOR TECHNOLOGY COM 031652100 52,802 -13,665 -20.56 2 -50.00 0.0133
2024-08-12 2024-06-30 13F AMKOR TECHNOLOGY COM 031652100 66,467 12,018 22.07 3 100.00 0.0227
2024-04-23 2024-03-31 13F AMKOR TECHNOLOGY COM 031652100 54,449 -5,120 -8.60 2 0.00 0.0150
2024-02-06 2023-12-31 13F AMKOR TECHNOLOGY COM 031652100 59,569 1,062 1.82 2 0.00 0.0158
2023-11-08 2023-09-30 13F AMKOR TECHNOLOGY COM 031652100 58,507 -2,009 -3.32 1 0.00 0.0113
2023-08-11 2023-06-30 13F AMKOR TECHNOLOGY COM 031652100 60,516 -3,913 -6.07 2 0.00 0.0146
2023-05-02 2023-03-31 13F AMKOR TECHNOLOGY COM 031652100 64,429 -4,004 -5.85 2 0.00 0.0143
2023-02-10 2022-12-31 13F AMKOR TECHNOLOGY COM 031652100 68,433 1,166 1.73 2 -99.91 0.0146
2022-11-09 2022-09-30 13F AMKOR TECHNOLOGY COM 031652100 67,267 1,492 2.27 1,147 2.87 0.0111
2022-08-15 2022-06-30 13F AMKOR TECHNOLOGY COM 031652100 65,775 829 1.28 1,115 -20.98 0.0104
2022-08-25 2022-03-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 64,946 -3,099 -4.55 1,411 -16.36 0.0110
2022-06-30 2022-03-31 13F AMKOR TECHNOLOGY COM 031652100 64,946 -3,099 1,411 0.0112
2022-02-15 2021-12-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 68,045 365 0.54 1,687 -0.12 0.0125
2022-02-15 2021-12-31 13F AMKOR TECHNOLOGY COM 031652100 68,045 365 1,687 0.0125
2021-10-29 2021-09-30 13F AMKOR TECHNOLOGY COM 031652100 67,680 -11,704 -14.74 1,689 -10.11 0.0143
2021-08-16 2021-06-30 13F AMKOR TECHNOLOGY COM 031652100 79,384 69,392 694.48 1,879 692.83 0.0151
2021-05-13 2021-03-31 13F AMKOR TECHNOLOGY COM 031652100 9,992 9,992 237 0.0089
2020-08-10 2020-06-30 13F AMKOR TECHNOLOGY COM 031652100 0 -15,187 -100.00 0 -100.00
2020-05-13 2020-03-31 13F AMKOR TECHNOLOGY COM 031652100 15,187 -660 -4.16 118 -42.72 0.0029
2020-02-13 2019-12-31 13F AMKOR TECHNOLOGY COM 031652100 15,847 1,340 9.24 206 56.06 0.0038
2019-11-13 2019-09-30 13F AMKOR TECHNOLOGY COM 031652100 14,507 -154 -1.05 132 21.10 0.0028
2019-08-14 2019-06-30 13F AMKOR TECHNOLOGY COM 031652100 14,661 253 1.76 109 -11.38 0.0025
2019-05-15 2019-03-31 13F AMKOR TECHNOLOGY COM 031652100 14,408 522 3.76 123 35.16 0.0030
2019-02-15 2018-12-31 13F AMKOR TECHNOLOGY COM 031652100 13,886 0 0.00 91 -11.65 0.0026
2018-11-14 2018-09-30 13F AMKOR TECHNOLOGY COM 031652100 13,886 43 0.31 103 -13.45 0.0025
2018-07-18 2018-06-30 13F AMKOR TECHNOLOGY COM 031652100 13,843 453 3.38 119 -12.50 0.0029
2018-05-22 2018-03-31 13F AMKOR TECHNOLOGY COM 031652100 13,390 -285 -2.08 136 -0.73 0.0036
2018-02-13 2017-12-31 13F AMKOR TECHNOLOGY COM 031652100 13,675 967 7.61 137 2.24 0.0037
2017-11-09 2017-09-30 13F AMKOR TECHNOLOGY COM 031652100 12,708 -202 -1.56 134 6.35 0.0042
2017-08-10 2017-06-30 13F AMKOR TECHNOLOGY COM 031652100 12,910 349 2.78 126 -13.70 0.0041
2017-05-12 2017-03-31 13F AMKOR TECHNOLOGY COM 031652100 12,561 9 0.07 146 10.61 0.0073
2017-02-14 2016-12-31 13F AMKOR TECHNOLOGY COM 031652100 12,552 1,606 14.67 132 24.53 0.0060
2016-11-15 2016-09-30 13F/A-1 AMKOR TECHNOLOGY COM 031652100 10,946 36 0.33 106 13.98 0.0062
2016-08-16 2016-06-30 13F AMKOR TECHNOLOGY COM 031652100 10,910 290 2.73 93 47.62 0.0054
2016-05-11 2016-03-31 13F AMKOR TECHNOLOGY COM 031652100 10,620 10,620 0.00 63 0.0061
2016-02-10 2015-12-31 13F AMKOR TECHNOLOGY COM 031652100 0 -10,338 -100.00 0 -100.00
2015-11-04 2015-09-30 13F AMKOR TECHNOLOGY COM 031652100 10,338 130 1.27 46 -24.59 0.0048
2015-07-10 2015-06-30 13F AMKOR TECHNOLOGY COM 031652100 10,208 10,208 61 0.0060
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.