Amkor Technology, Inc.
MX ˙ BMV ˙ US0316521006
SecurityMX:AMKR / Amkor Technology, Inc.
InstitutionGeode Capital Management, Llc
Latest Disclosed Ownership2,730,508 shares
Latest Disclosed Value $ 122,976,233
Geode Capital Management, Llc reports 22.32% increase in ownership of AMKR / Amkor Technology, Inc.

On May 15, 2026 - Geode Capital Management, Llc filed a 13F-HR form disclosing ownership of 2,730,508 shares of Amkor Technology, Inc. (MX:AMKR) valued at $122,976,233 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 2,232,211 shares of Amkor Technology, Inc.. This represents a change in shares of 22.32% 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.

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)
2026-05-15 2026-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,730,508 498,297 22.32 122,976 39.52 0.0041
2026-02-09 2025-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,232,211 -47,220 -2.07 88,143 36.14 0.0054
2025-11-12 2025-09-30 13F AMKOR TECHNOLOGY COM 031652100 2,279,431 23,956 1.06 64,747 36.74 0.0041
2025-08-08 2025-06-30 13F AMKOR TECHNOLOGY COM 031652100 2,255,475 27,432 1.23 47,349 17.64 0.0033
2025-05-13 2025-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,228,043 118,536 5.62 40,249 -25.75 0.0032
2025-02-12 2024-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,109,507 15,211 0.73 54,209 -15.43 0.0042
2024-11-12 2024-09-30 13F AMKOR TECHNOLOGY COM 031652100 2,094,296 131,106 6.68 64,101 -18.43 0.0052
2024-08-09 2024-06-30 13F AMKOR TECHNOLOGY COM 031652100 1,963,190 -681,577 -25.77 78,586 -7.85 0.0069
2024-05-13 2024-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,644,767 75,623 2.94 85,278 -0.24 0.0079
2024-02-13 2023-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,569,144 214,612 9.11 85,484 60.63 0.0089
2023-11-13 2023-09-30 13F AMKOR TECHNOLOGY COM 031652100 2,354,532 112,525 5.02 53,218 -20.21 0.0063
2023-08-11 2023-06-30 13F AMKOR TECHNOLOGY COM 031652100 2,242,007 110,203 5.17 66,700 20.25 0.0078
2023-05-15 2023-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,131,804 -107,270 -4.79 55,470 104,558.49 0.0072
2023-02-13 2022-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,239,074 13,404 0.60 54 -99.86 0.0075
2022-11-14 2022-09-30 13F AMKOR TECHNOLOGY COM 031652100 2,225,670 47,050 2.16 37,947 2.76 0.0058
2022-08-12 2022-06-30 13F AMKOR TECHNOLOGY COM 031652100 2,178,620 156,591 7.74 36,927 -15.92 0.0054
2022-05-13 2022-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,022,029 59,634 3.04 43,918 -9.72 0.0055
2022-02-11 2021-12-31 13F AMKOR TECHNOLOGY COM 031652100 1,962,395 -30,412 -1.53 48,647 -2.16 0.0059
2021-11-12 2021-09-30 13F AMKOR TECHNOLOGY COM 031652100 1,992,807 -150,468 -7.02 49,720 -1.99 0.0067
2021-08-13 2021-06-30 13F AMKOR TECHNOLOGY COM 031652100 2,143,275 18,089 0.85 50,731 0.68 0.0070
2021-05-12 2021-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,125,186 -301,663 -12.43 50,388 37.69 0.0077
2021-02-12 2020-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,426,849 379,935 18.56 36,596 59.64 0.0061
2020-11-13 2020-09-30 13F AMKOR TECHNOLOGY COM 031652100 2,046,914 187,449 10.08 22,924 0.15 0.0045
2020-08-13 2020-06-30 13F AMKOR TECHNOLOGY COM 031652100 1,859,465 -38,055 -2.01 22,889 54.85 0.0049
2020-05-14 2020-03-31 13F AMKOR TECHNOLOGY COM 031652100 1,897,520 -296,657 -13.52 14,781 -48.18 0.0039
2020-02-20 2019-12-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 2,194,177 252,205 12.99 28,523 61.41 0.0060
2020-02-13 2019-12-31 13F AMKOR TECHNOLOGY COM 031652100 2,194,177 252,205 28,523 3,635.0063
2019-11-12 2019-09-30 13F AMKOR TECHNOLOGY COM 031652100 1,941,972 -188,575 -8.85 17,671 11.19 0.0041
2019-08-14 2019-06-30 13F AMKOR TECHNOLOGY COM 031652100 2,130,547 20,374 0.97 15,893 -11.80 0.0038
2019-05-14 2019-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,110,173 130,312 6.58 18,020 38.75 0.0047
2019-03-06 2018-12-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 1,979,861 85,405 4.51 12,987 -7.23 0.0040
2019-02-13 2018-12-31 13F AMKOR TECHNOLOGY COM 031652100 1,979,861 85,405 12,987
2018-11-13 2018-09-30 13F AMKOR TECHNOLOGY COM 031652100 1,894,456 99,043 5.52 13,999 -9.23 0.0039
2018-08-14 2018-06-30 13F AMKOR TECHNOLOGY COM 031652100 1,795,413 13,958 0.78 15,422 -14.54 0.0047
2018-05-15 2018-03-31 13F AMKOR TECHNOLOGY COM 031652100 1,781,455 88,307 5.22 18,046 6.06 0.0059
2018-02-13 2017-12-31 13F AMKOR TECHNOLOGY COM 031652100 1,693,148 -111,377 -6.17 17,015 -10.62 0.0058
2017-11-14 2017-09-30 13F AMKOR TECHNOLOGY COM 031652100 1,804,525 134,315 8.04 19,036 16.66 0.0070
2017-08-14 2017-06-30 13F AMKOR TECHNOLOGY COM 031652100 1,670,210 245,717 17.25 16,317 -1.16 0.0064
2017-06-21 2017-03-31 13F/A-1 AMKOR TECHNOLOGY INC COM COM 031652100 1,424,493 460,724 47.80 16,509 62.38 0.0068
2017-05-12 2017-03-31 13F AMKOR TECHNOLOGY INC COM COM 031652100 1,424,493 16,509
2017-02-14 2016-12-31 13F AMKOR TECHNOLOGY INC COM COM 031652100 963,769 89,966 10.30 10,167 19.72 0.0047
2016-11-10 2016-09-30 13F AMKOR TECHNOLOGY INC COM COM 031652100 873,803 111,219 14.58 8,492 93.70 0.0043
2016-08-12 2016-06-30 13F AMKOR TECHNOLOGY INC COM COM 031652100 762,584 10,213 1.36 4,384 -1.06 0.0024
2016-05-13 2016-03-31 13F AMKOR TECHNOLOGY INC COM COM 031652100 752,371 19,250 2.63 4,431 -0.58 0.0024
2016-02-12 2015-12-31 13F AMKOR TECHNOLOGY INC COM COM 031652100 733,121 -53,799 -6.84 4,457 26.19 0.0025
2015-11-13 2015-09-30 13F AMKOR TECHNOLOGY INC COM COM 031652100 786,920 29,451 3.89 3,532 -22.00 0.0021
2015-08-14 2015-06-30 13F AMKOR TECHNOLOGY INC COM COM 031652100 757,469 -15,150 -1.96 4,528 -33.66 0.0026
2015-05-14 2015-03-31 13F AMKOR TECHNOLOGY INC COM COM 031652100 772,619 25,638 3.43 6,825 28.73 0.0039
2015-02-12 2014-12-31 13F AMKOR TECHNOLOGY INC COM COM 031652100 746,981 -101,157 -11.93 5,302 -25.66 0.0032
2014-11-14 2014-09-30 13F AMKOR TECHNOLOGY INC COM COM 031652100 848,138 97,595 13.00 7,132 -15.00 0.0046
2014-08-13 2014-06-30 13F AMKOR TECHNOLOGY INC COM COM 031652100 750,543 30,213 4.19 8,391 69.82 0.0054
2014-05-14 2014-03-31 13F AMKOR TECHNOLOGY INC COM COM 031652100 720,330 58,227 8.79 4,941 21.76 0.0033
2014-02-14 2013-12-31 13F AMKOR TECHNOLOGY INC COM COM 031652100 662,103 107,475 19.38 4,058 70.58 0.0028
2013-11-14 2013-09-30 13F AMKOR TECHNOLOGY INC COM COM 031652100 554,628 179,025 47.66 2,379 50.47 0.0019
2013-08-14 2013-06-30 13F AMKOR TECHNOLOGY INC COM COM 031652100 375,603 375,603 1,581 0.0014
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.