Amkor Technology, Inc.
MX ˙ BMV ˙ US0316521006
SecurityMX:AMKR / Amkor Technology, Inc.
InstitutionToroso Investments, LLC
Latest Disclosed Ownership30,885 shares
Latest Disclosed Value $ 1,390,751
Toroso Investments, LLC reports 26.11% increase in ownership of AMKR / Amkor Technology, Inc.

On May 15, 2026 - Toroso Investments, LLC filed a 13F-HR form disclosing ownership of 30,885 shares of Amkor Technology, Inc. (MX:AMKR) valued at $1,390,751 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 24,491 shares of Amkor Technology, Inc.. This represents a change in shares of 26.11% 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)
2026-05-15 2026-03-31 13F AMKOR TECHNOLOGY COM 031652100 30,885 6,394 26.11 1,391 43.89 0.0022
2026-02-13 2025-12-31 13F AMKOR TECHNOLOGY COM 031652100 24,491 -1,389 -5.37 967 31.61 0.0023
2025-11-14 2025-09-30 13F AMKOR TECHNOLOGY COM 031652100 25,880 639 2.53 735 38.75 0.0015
2025-08-14 2025-06-30 13F AMKOR TECHNOLOGY COM 031652100 25,241 -10,632 -29.64 530 -18.24 0.0032
2025-05-14 2025-03-31 13F AMKOR TECHNOLOGY COM 031652100 35,873 11,076 44.67 648 1.57 0.0053
2025-02-14 2024-12-31 13F AMKOR TECHNOLOGY COM 031652100 24,797 -225 -0.90 637 -16.73 0.0050
2024-11-25 2024-09-30 13F/A-1 AMKOR TECHNOLOGY COM 031652100 25,022 -9,126 -26.72 766 -44.00 0.0081
2024-11-14 2024-09-30 13F AMKOR TECHNOLOGY COM 031652100 25,022 -9,126 766 0.0052
2024-08-14 2024-06-30 13F AMKOR TECHNOLOGY COM 031652100 34,148 16,030 88.48 1,367 133.90 0.0184
2024-05-16 2024-03-31 13F AMKOR TECHNOLOGY COM 031652100 18,118 18,118 584 0.0096
2023-11-15 2023-09-30 13F AMKOR TECHNOLOGY COM 031652100 0 -14,826 -100.00 0 0.0000
2023-08-14 2023-06-30 13F AMKOR TECHNOLOGY COM 031652100 14,826 14,826 0 0.0130
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.