Amkor Technology, Inc.
MX ˙ BMV ˙ US0316521006
SecurityMX:AMKR / Amkor Technology, Inc.
InstitutionAmeriprise Financial Inc
Latest Disclosed Ownership1,464,105 shares
Ownership 0.81%
Ameriprise Financial Inc ownership in AMKR / Amkor Technology, Inc.

2012-02-14 - Ameriprise Financial Inc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,464,105 shares of Amkor Technology, Inc. (MX:AMKR). This represents 0.81 percent ownership of the company.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2012-02-14 2012-02-14 13G/A 1,464,105 0.81

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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 177,271 -38,450 -17.82 7,983 -6.27 0.0003
2026-02-17 2025-12-31 13F AMKOR TECHNOLOGY COM 031652100 215,721 -400,790 -65.01 8,517 -51.36 0.0019
2025-11-14 2025-09-30 13F AMKOR TECHNOLOGY COM 031652100 616,511 408,941 197.01 17,509 301.93 0.0040
2025-08-14 2025-06-30 13F AMKOR TECHNOLOGY COM 031652100 207,570 21,256 11.41 4,357 29.45 0.0011
2025-05-14 2025-03-31 13F AMKOR TECHNOLOGY COM 031652100 186,314 50,862 37.55 3,365 -3.28 0.0009
2025-02-14 2024-12-31 13F AMKOR TECHNOLOGY COM 031652100 135,452 -106,206 -43.95 3,480 -52.95 0.0009
2024-11-14 2024-09-30 13F AMKOR TECHNOLOGY COM 031652100 241,658 -8,436 -3.37 7,395 -26.12 0.0019
2024-08-14 2024-06-30 13F AMKOR TECHNOLOGY COM 031652100 250,094 -53,229 -17.55 10,009 2.34 0.0027
2024-05-15 2024-03-31 13F AMKOR TECHNOLOGY COM 031652100 303,323 -1,240,450 -80.35 9,780 -80.96 0.0027
2024-02-14 2023-12-31 13F AMKOR TECHNOLOGY COM 031652100 1,543,773 65,727 4.45 51,361 53.76 0.0154
2023-11-14 2023-09-30 13F AMKOR TECHNOLOGY COM 031652100 1,478,046 1,116,729 309.07 33,404 210.75 0.0110
2023-08-14 2023-06-30 13F AMKOR TECHNOLOGY COM 031652100 361,317 -381,035 -51.33 10,749 -44.35 0.0034
2023-05-22 2023-03-31 13F/A-1 AMKOR TECHNOLOGY COM 031652100 742,352 93,016 14.32 19,316 24.04 0.0063
2023-05-15 2023-03-31 13F AMKOR TECHNOLOGY COM 031652100 742,352 93,016 19,316 0.0012
2023-02-14 2022-12-31 13F AMKOR TECHNOLOGY COM 031652100 649,336 134,705 26.18 15,572 77.48 0.0053
2022-11-14 2022-09-30 13F AMKOR TECHNOLOGY COM 031652100 514,631 -120,664 -18.99 8,774 -18.51 0.0032
2022-08-15 2022-06-30 13F AMKOR TECHNOLOGY COM 031652100 635,295 -63,396 -9.07 10,767 -29.06 0.0038
2022-05-16 2022-03-31 13F AMKOR TECHNOLOGY COM 031652100 698,691 1,512 0.22 15,178 -12.18 0.0045
2022-02-14 2021-12-31 13F AMKOR TECHNOLOGY COM 031652100 697,179 435,156 166.08 17,283 164.39 0.0048
2021-11-15 2021-09-30 13F AMKOR TECHNOLOGY COM 031652100 262,023 -17,135 -6.14 6,537 -1.07 0.0021
2021-08-16 2021-06-30 13F AMKOR TECHNOLOGY COM 031652100 279,158 -15,340 -5.21 6,608 -5.37 0.0020
2021-05-17 2021-03-31 13F AMKOR TECHNOLOGY COM 031652100 294,498 160,237 119.35 6,983 244.84 0.0023
2021-02-12 2020-12-31 13F AMKOR TECHNOLOGY COM 031652100 134,261 -18,105 -11.88 2,025 18.70 0.0007
2020-11-16 2020-09-30 13F AMKOR TECHNOLOGY COM 031652100 152,366 -61,614 -28.79 1,706 -35.26 0.0007
2020-08-14 2020-06-30 13F AMKOR TECHNOLOGY COM 031652100 213,980 -224,340 -51.18 2,635 -22.86 0.0011
2020-05-15 2020-03-31 13F AMKOR TECHNOLOGY COM 031652100 438,320 72,708 19.89 3,416 -28.14 0.0018
2020-02-14 2019-12-31 13F AMKOR TECHNOLOGY COM 031652100 365,612 -173,163 -32.14 4,754 -3.02 0.0020
2019-11-14 2019-09-30 13F AMKOR TECHNOLOGY COM 031652100 538,775 -444,624 -45.21 4,902 -33.18 0.0022
2019-08-14 2019-06-30 13F AMKOR TECHNOLOGY COM 031652100 983,399 6,431 0.66 7,336 -12.07 0.0033
2019-05-15 2019-03-31 13F AMKOR TECHNOLOGY COM 031652100 976,968 -61,547 -5.93 8,343 22.46 0.0038
2019-02-14 2018-12-31 13F AMKOR TECHNOLOGY COM 031652100 1,038,515 33,347 3.32 6,813 -8.29 0.0034
2018-11-14 2018-09-30 13F AMKOR TECHNOLOGY COM 031652100 1,005,168 525,814 109.69 7,429 80.40 0.0026
2018-08-14 2018-06-30 13F AMKOR TECHNOLOGY COM 031652100 479,354 -161,224 -25.17 4,118 -36.55 0.0018
2018-05-14 2018-03-31 13F AMKOR TECHNOLOGY COM 031652100 640,578 -85,206 -11.74 6,490 -11.02 0.0029
2018-02-12 2017-12-31 13F AMKOR TECHNOLOGY COM 031652100 725,784 58,306 8.74 7,294 3.58 0.0033
2017-11-07 2017-09-30 13F AMKOR TECHNOLOGY COM 031652100 667,478 9,133 1.39 7,042 9.48 0.0034
2017-08-10 2017-06-30 13F AMKOR TECHNOLOGY COM 031652100 658,345 -139,640 -17.50 6,432 -30.46 0.0032
2017-05-05 2017-03-31 13F AMKOR TECHNOLOGY COM 031652100 797,985 -53,894 -6.33 9,249 2.92 0.0048
2017-02-03 2016-12-31 13F AMKOR TECHNOLOGY COM 031652100 851,879 -194,377 -18.58 8,987 -11.63 0.0049
2016-11-08 2016-09-30 13F AMKOR TECHNOLOGY COM 031652100 1,046,256 -535,514 -33.86 10,170 11.83 0.0057
2016-08-08 2016-06-30 13F AMKOR TECHNOLOGY COM 031652100 1,581,770 -530,030 -25.10 9,094 -26.89 0.0053
2016-05-12 2016-03-31 13F AMKOR TECHNOLOGY COM 031652100 2,111,800 448,327 26.95 12,439 23.01 0.0074
2016-02-11 2015-12-31 13F AMKOR TECHNOLOGY COM 031652100 1,663,473 327,784 24.54 10,112 68.62 0.0059
2015-11-12 2015-09-30 13F AMKOR TECHNOLOGY COM 031652100 1,335,689 423,671 46.45 5,997 9.98 0.0037
2015-08-13 2015-06-30 13F AMKOR TECHNOLOGY COM 031652100 912,018 743,786 442.12 5,453 266.96 0.0031
2015-05-14 2015-03-31 13F AMKOR TECHNOLOGY COM 031652100 168,232 -8,817 -4.98 1,486 17.94 0.0009
2015-02-13 2014-12-31 13F AMKOR TECHNOLOGY COM 031652100 177,049 79,492 81.48 1,260 53.66 0.0007
2014-11-14 2014-09-30 13F AMKOR TECHNOLOGY COM 031652100 97,557 42,742 77.98 820 33.99 0.0005
2014-08-13 2014-06-30 13F AMKOR TECHNOLOGY COM 031652100 54,815 -1,971 -3.47 612 56.92 0.0004
2014-05-14 2014-03-31 13F AMKOR TECHNOLOGY COM 031652100 56,786 51,100 898.70 390 1,014.29 0.0002
2014-02-14 2013-12-31 13F AMKOR TECHNOLOGY COM 031652100 5,686 -1,107 -16.30 35 20.69 0.0000
2013-11-14 2013-09-30 13F AMKOR TECHNOLOGY COM 031652100 6,793 -501,906 -98.66 29 -98.65 0.0000
2013-08-14 2013-06-30 13F AMKOR TECHNOLOGY COM 031652100 508,699 508,699 2,142 0.0015
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.