Magnachip Semiconductor Corporation
US ˙ NYSE ˙ US55933J2033

SecurityMX / Magnachip Semiconductor Corporation
InstitutionAmeriprise Financial Inc
Latest Disclosed Ownership1,583,589 shares
Latest Disclosed Value $ 4,434,049
Ameriprise Financial Inc reports 9.15% increase in ownership of MX / Magnachip Semiconductor Corporation

On May 15, 2026 - Ameriprise Financial Inc filed a 13F-HR form disclosing ownership of 1,583,589 shares of Magnachip Semiconductor Corporation (US:MX) valued at $4,434,049 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,450,892 shares of Magnachip Semiconductor Corporation. This represents a change in shares of 9.15% during the quarter. The current value of the position is $14,141,450 USD.

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 MAGNACHIP SEMICONDUCTOR COM 55933J203 1,583,589 132,697 9.15 4,434 19.87 0.0002
2026-02-17 2025-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,450,892 18,049 1.26 3,700 -17.51 0.0008
2025-11-14 2025-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,432,843 208,417 17.02 4,485 -7.98 0.0010
2025-08-14 2025-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,224,426 -264,584 -17.77 4,873 -4.58 0.0012
2025-05-14 2025-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,489,010 30,730 2.11 5,107 -12.88 0.0014
2025-02-14 2024-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,458,280 772,085 112.52 5,862 82.96 0.0015
2024-11-14 2024-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 686,195 -214,129 -23.78 3,205 -26.92 0.0008
2024-08-14 2024-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 900,324 163,748 22.23 4,385 6.67 0.0012
2024-05-15 2024-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 736,576 134,641 22.37 4,110 -8.95 0.0011
2024-02-14 2023-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 601,935 238,560 65.65 4,515 49.52 0.0014
2023-11-14 2023-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 363,375 -40,914 -10.12 3,020 -33.19 0.0010
2023-08-14 2023-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 404,289 -44,312 -9.88 4,520 8.55 0.0014
2023-05-22 2023-03-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 448,601 11,620 2.66 4,163 1.44 0.0014
2023-05-15 2023-03-31 13F MAGNA INTERNATIONAL COM 55933J203 448,601 11,620 4,163 0.0003
2023-02-14 2022-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 436,981 -645,231 -59.62 4,104 -62.97 0.0014
2022-11-14 2022-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,082,212 -76,362 -6.59 11,082 -34.17 0.0041
2022-08-15 2022-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,158,574 -203,828 -14.96 16,835 -26.93 0.0059
2022-05-16 2022-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,362,402 44,104 3.35 23,039 -16.66 0.0068
2022-02-14 2021-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,318,298 398,523 43.33 27,645 69.23 0.0076
2021-11-15 2021-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 919,775 44,119 5.04 16,336 -21.81 0.0052
2021-08-16 2021-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 875,656 198,686 29.35 20,894 23.94 0.0065
2021-05-17 2021-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 676,970 77,556 12.94 16,858 108.07 0.0056
2021-02-12 2020-12-31 13F MAGNACHIP SEMICONDUCT COM 55933J203 599,414 171,764 40.16 8,102 38.31 0.0029
2020-11-16 2020-09-30 13F MAGNACHIP SEMICONDUCT COM 55933J203 427,650 427,450 213,725.00 5,858 292,800.00 0.0024
2014-11-14 2014-09-30 13F MAGNACHIP SEMICONDUCT COM 55933J203 200 0 0.00 2 -33.33 0.0000
2014-08-13 2014-06-30 13F MAGNACHIP SEMICONDUCT COM 55933J203 200 0 0.00 3 0.00 0.0000
2014-05-14 2014-03-31 13F MAGNACHIP SEMICONDUCT COM 55933J203 200 0 0.00 3 -25.00 0.0000
2014-02-14 2013-12-31 13F MAGNACHIP SEMICONDUCT COM 55933J203 200 0 0.00 4 0.00 0.0000
2013-11-14 2013-09-30 13F MAGNACHIP SEMICONDUCT COM 55933J203 200 0 0.00 4 0.00 0.0000
2013-08-14 2013-06-30 13F MAGNACHIP SEMICONDUCT COM 55933J203 200 200 4 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.