Amkor Technology, Inc.
MX ˙ BMV ˙ US0316521006
SecurityMX:AMKR / Amkor Technology, Inc.
InstitutionSignaturefd, Llc
Latest Disclosed Ownership5,151 shares
Latest Disclosed Value $ 231,932
Signaturefd, Llc reports 94.82% increase in ownership of AMKR / Amkor Technology, Inc.

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 5,151 shares of Amkor Technology, Inc. (MX:AMKR) valued at $231,932 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 2,644 shares of Amkor Technology, Inc.. This represents a change in shares of 94.82% 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)
2026-04-07 2026-03-31 13F AMKOR TECHNOLOGY COM 031652100 5,151 2,507 94.82 232 122.12 0.0036
2026-01-20 2025-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,644 269 11.33 104 55.22 0.0016
2025-10-21 2025-09-30 13F AMKOR TECHNOLOGY COM 031652100 2,375 0 0.00 67 36.73 0.0011
2025-07-16 2025-06-30 13F AMKOR TECHNOLOGY COM 031652100 2,375 -2,992 -55.75 50 -48.96 0.0008
2025-05-02 2025-03-31 13F AMKOR TECHNOLOGY COM 031652100 5,367 2,545 90.18 97 33.33 0.0018
2025-02-10 2024-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,822 -106 -3.62 72 -19.10 0.0014
2024-10-21 2024-09-30 13F AMKOR TECHNOLOGY COM 031652100 2,928 -1,625 -35.69 90 -51.10 0.0017
2024-07-29 2024-06-30 13F AMKOR TECHNOLOGY COM 031652100 4,553 1,832 67.33 182 109.20 0.0037
2024-05-03 2024-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,721 0 0.00 88 -3.33 0.0019
2024-02-01 2023-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,721 -430 -13.65 91 26.76 0.0021
2023-11-03 2023-09-30 13F AMKOR TECHNOLOGY COM 031652100 3,151 -449 -12.47 71 -33.64 0.0019
2023-08-01 2023-06-30 13F AMKOR TECHNOLOGY COM 031652100 3,600 208 6.13 107 21.59 0.0027
2023-04-28 2023-03-31 13F AMKOR TECHNOLOGY COM 031652100 3,392 -419 -10.99 88 -3.30 0.0024
2023-01-30 2022-12-31 13F AMKOR TECHNOLOGY COM 031652100 3,811 -393 -9.35 91 26.39 0.0027
2022-11-08 2022-09-30 13F AMKOR TECHNOLOGY COM 031652100 4,204 620 17.30 72 18.03 0.0025
2022-08-10 2022-06-30 13F AMKOR TECHNOLOGY COM 031652100 3,584 2,307 180.66 61 117.86 0.0021
2022-05-02 2022-03-31 13F AMKOR TECHNOLOGY COM 031652100 1,277 -228 -15.15 28 -24.32 0.0008
2022-01-25 2021-12-31 13F AMKOR TECHNOLOGY COM 031652100 1,505 1,098 269.78 37 270.00 0.0011
2021-10-28 2021-09-30 13F AMKOR TECHNOLOGY COM 031652100 407 120 41.81 10 42.86 0.0003
2021-07-26 2021-06-30 13F AMKOR TECHNOLOGY COM 031652100 287 -5 -1.71 7 0.00 0.0003
2021-04-30 2021-03-31 13F AMKOR TECHNOLOGY COM 031652100 292 150 105.63 7 250.00 0.0003
2021-02-11 2020-12-31 13F AMKOR TECHNOLOGY COM 031652100 142 0 0.00 2 0.00 0.0001
2020-11-03 2020-09-30 13F AMKOR TECHNOLOGY COM 031652100 142 0 0.00 2 0.00 0.0001
2020-07-30 2020-06-30 13F AMKOR TECHNOLOGY COM 031652100 142 0 0.00 2 100.00 0.0001
2020-04-23 2020-03-31 13F AMKOR TECHNOLOGY COM 031652100 142 125 735.29 1 0.0001
2020-02-05 2019-12-31 13F AMKOR TECHNOLOGY COM 031652100 17 0 0.00 0 0.0000
2019-10-16 2019-09-30 13F AMKOR TECHNOLOGY COM 031652100 17 0 0.00 0 0.0000
2019-07-31 2019-06-30 13F AMKOR TECHNOLOGY COM 031652100 17 0 0.00 0 0.0000
2019-05-09 2019-03-31 13F AMKOR TECHNOLOGY COM 031652100 17 0 0.00 0 0.0000
2019-02-13 2018-12-31 13F AMKOR TECHNOLOGY COM 031652100 17 7 70.00 0 0.0000
2018-11-14 2018-09-30 13F AMKOR TECHNOLOGY COM 031652100 10 -9 -47.37 0 0.0000
2018-08-14 2018-06-30 13F AMKOR TECHNOLOGY COM 031652100 19 4 26.67 0 0.0000
2018-05-08 2018-03-31 13F AMKOR TECHNOLOGY COM 031652100 15 15 0 0.0000
2015-07-15 2015-06-30 13F AMKOR TECHNOLOGY COM 031652100 0 -51 -100.00 0 0.0000
2015-04-15 2015-03-31 13F AMKOR TECHNOLOGY COM 031652100 51 51 0 0.0000
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.