Amkor Technology, Inc.
MX ˙ BMV ˙ US0316521006
SecurityMX:AMKR / Amkor Technology, Inc.
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership288,498 shares
Latest Disclosed Value $ 12,991,065
Bnp Paribas Arbitrage, Sa reports 457.13% increase in ownership of AMKR / Amkor Technology, Inc.

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 288,498 shares of Amkor Technology, Inc. (MX:AMKR) valued at $12,991,065 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 51,783 shares of Amkor Technology, Inc.. This represents a change in shares of 457.13% 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)
2026-05-12 2026-03-31 13F Amkor Technology Equity 031652100 288,498 236,715 457.13 12,991 535.57 0.0063
2026-02-10 2025-12-31 13F Amkor Technology Equity 031652100 51,783 9,854 23.50 2,044 71.76 0.0009
2025-11-13 2025-09-30 13F Amkor Technology Equity 031652100 41,929 -168,211 -80.05 1,191 -73.02 0.0006
2025-08-14 2025-06-30 13F Amkor Technology Equity 031652100 210,140 -69,362 -24.82 4,411 -12.62 0.0025
2025-05-14 2025-03-31 13F Amkor Technology Equity 031652100 279,502 231,566 483.07 5,048 309.99 0.0030
2025-02-14 2024-12-31 13F Amkor Technology Equity 031652100 47,936 -70,643 -59.57 1,231 -66.07 0.0007
2024-11-13 2024-09-30 13F Amkor Technology Equity 031652100 118,579 99,143 510.10 3,629 366.92 0.0024
2024-08-13 2024-06-30 13F Amkor Technology Equity 031652100 19,436 -56,034 -74.25 778 -68.06 0.0006
2024-05-01 2024-03-31 13F Amkor Technology Equity 031652100 75,470 39,284 108.56 2,433 102.24 0.0021
2024-02-14 2023-12-31 13F/A-2 Amkor Technology Equity 031652100 36,186 5,408 17.57 1,204 73.09 0.0014
2024-02-07 2023-12-31 13F/A-1 Amkor Technology Equity 031652100 36,186 5,408 1,204 0.0002
2024-02-07 2023-12-31 13F Amkor Technology Equity 031652100 36,186 5,408 1,204 0.0014
2023-11-14 2023-09-30 13F Amkor Technology Equity 031652100 30,778 -12,945 -29.61 696 -46.54 0.0009
2023-08-09 2023-06-30 13F Amkor Technology Equity 031652100 43,723 -29,998 -40.69 1,301 -32.22 0.0016
2023-05-12 2023-03-31 13F AMKOR TECHNOLOGY EQUITY 031652100 73,721 -3,783 -4.88 1,918 3.23 0.0027
2023-02-14 2022-12-31 13F Amkor Technology Equity 031652100 77,504 -24,175 -23.78 1,859 7.21 0.0029
2022-11-16 2022-09-30 13F/A-1 Amkor Technology Equity 031652100 101,679 -13,632 -11.82 1,734 -11.31 0.0028
2022-11-15 2022-09-30 13F Amkor Technology Equity 031652100 101,679 -13,632 1,734 0.0004
2022-08-12 2022-06-30 13F Amkor Technology Equity 031652100 115,311 1,700 1.50 1,955 -20.79 0.0031
2022-05-18 2022-03-31 13F/A-1 Amkor Technology Equity 031652100 113,611 4,663 4.28 2,468 -8.63 0.0033
2022-02-09 2021-12-31 13F AMKOR TECHNOLOGY EQUITY 031652100 108,948 93,287 595.66 2,701 592.31 0.0038
2021-11-16 2021-09-30 13F/A-1 AMKOR TECHNOLOGY EQUITY 031652100 15,661 -46,909 -74.97 391 -73.67 0.0006
2021-11-12 2021-09-30 13F AMKOR TECHNOLOGY EQUITY 031652100 23,444 -39,126 263 0.0000
2021-08-10 2021-06-30 13F AMKOR TECHNOLOGY EQUITY 031652100 62,570 -11,694 -15.75 1,481 -15.85 0.0020
2021-05-07 2021-03-31 13F AMKOR TECHNOLOGY EQUITY 031652100 74,264 23,778 47.10 1,761 131.27 0.0026
2021-02-10 2020-12-31 13F AMKOR TECHNOLOGY EQUITY 031652100 50,486 27,042 115.35 761 190.46 0.0014
2020-10-30 2020-09-30 13F AMKOR TECHNOLOGY EQUITY 031652100 23,444 17,874 320.90 263 285.29 0.0004
2020-08-06 2020-06-30 13F AMKOR TECHNOLOGY EQUITY 031652100 5,570 -95,979 -94.51 69 -91.40 0.0001
2020-05-13 2020-03-31 13F AMKOR TECHNOLOGY EQUITY 031652100 101,549 -131,944 -56.51 791 -73.94 0.0016
2020-02-12 2019-12-31 13F AMKOR TECHNOLOGY EQUITY 031652100 233,493 215,991 1,234.09 3,035 1,808.81 0.0055
2019-11-07 2019-09-30 13F AMKOR TECHNOLOGY EQUITY 031652100 17,502 -5,884 -25.16 159 -8.62 0.0003
2019-07-30 2019-06-30 13F AMKOR TECHNOLOGY EQUITY 031652100 23,386 214 0.92 174 -11.68 0.0003
2019-04-25 2019-03-31 13F AMKOR TECHNOLOGY EQUITY 031652100 23,172 11,909 105.74 198 169.86 0.0004
2019-02-12 2018-12-31 13F AMKOR TECHNOLOGY EQUITY 031652100 11,263 5,376 91.32 74 69.77 0.0002
2018-11-07 2018-09-30 13F AMKOR TECHNOLOGY EQUITY 031652100 5,887 -3,501 -37.29 44 -46.25 0.0001
2018-07-25 2018-06-30 13F AMKOR TECHNOLOGY EQUITY 031652100 9,388 -12,259 -56.63 81 -63.47 0.0001
2018-05-11 2018-03-31 13F AMKOR TECHNOLOGY EQUITY 031652100 21,647 -12,503 -36.61 219 -36.15 0.0004
2018-03-05 2017-12-31 13F/A-1 AMKOR TECHNOLOGY EQUITY 031652100 34,150 16,166 89.89 343 81.48 0.0006
2018-02-01 2017-12-31 13F AMKOR TECHNOLOGY EQUITY 031652100 34,150 16,166 343
2017-11-03 2017-09-30 13F AMKOR TECHNOLOGY STOCK 031652100 17,984 -6,824 -27.51 190 -21.90 0.0005
2017-08-03 2017-06-30 13F AMKOR TECHNOLOGY STOCK 031652100 24,808 11,358 84.45 242 56.13 0.0007
2017-05-03 2017-03-31 13F AMKOR TECHNOLOGY STOCK 031652100 13,450 -8,887 -39.79 156 -34.04 0.0004
2017-02-14 2016-12-31 13F AMKOR TECHNOLOGY STOCK 031652100 22,337 9,144 69.31 236 83.59 0.0011
2016-10-05 2016-09-30 13F * AMKOR TECHNOLOGY INC COM STOCK 031652100 13,193 4,172 46.25 128 150.98 0.0005
2016-07-06 2016-06-30 13F * AMKOR TECHNOLOGY INC COM STOCK 031652100 9,021 6,278 228.87 52 218.75 0.0002
2016-04-22 2016-03-31 13F * AMKOR TECHNOLOGY INC COM STOCK 031652100 2,743 -12,006 -81.40 16 -82.02 0.0001
2016-04-19 2015-12-31 13F/A-1 * AMKOR TECHNOLOGY INC COM STOCK 031652100 14,749 -26,199 -63.98 90 -51.37 0.0004
2016-02-10 2015-12-31 13F * AMKOR TECHNOLOGY INC COM STOCK 031652100 14,749 90
2015-11-13 2015-09-30 13F * AMKOR TECHNOLOGY INC COM STOCK 031652100 40,948 -27,138 -39.86 184 -55.04 0.0005
2015-08-14 2015-06-30 13F AMKOR TECHNOLOGY INC COM STOCK 031652100 68,086 -35,910 -34.53 407 -55.71 0.0011
2015-05-15 2015-03-31 13F * AMKOR TECHNOLOGY INC COM STOCK 031652100 103,996 12,188 13.28 919 41.17 0.0025
2015-03-10 2014-12-31 13F/A-1 * AMKOR TECHNOLOGY INC COM STOCK 031652100 91,808 -67,411 -42.34 652 -51.38 0.0023
2015-02-11 2014-12-31 13F * AMKOR TECHNOLOGY INC COM STOCK 031652100 91,808 652
2014-11-12 2014-09-30 13F * AMKOR TECHNOLOGY INC COM STOCK 031652100 159,219 75,853 90.99 1,339 43.67 0.0012
2014-08-14 2014-06-30 13F/A-1 * AMKOR TECHNOLOGY INC COM STOCK 031652100 83,366 15,389 22.64 932 72.59 0.0009
2014-08-14 2014-06-30 13F AMKOR TECHNOLOGY INC COM STOCK 031652100 83,366 932
2014-05-13 2014-03-31 13F AMKOR TECHNOLOGY STOCK 031652100 67,977 -481,369 -87.63 540 -83.96 0.0004
2014-04-02 2013-12-31 13F/A-1 AMKOR TECHNOLOGY STOCK 031652100 549,346 -535,096 -49.34 3,367 -27.47 0.0025
2014-02-12 2013-12-31 13F AMKOR TECHNOLOGY STOCK 031652100 549,346 3,367
2013-11-13 2013-09-30 13F AMKOR TECHNOLOGY STOCK 031652100 1,084,442 457,071 72.85 4,642 75.77 0.0034
2013-08-13 2013-06-30 13F AMKOR TECHNOLOGY STOCK 031652100 627,371 627,371 2,641 0.0019
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.