Magnachip Semiconductor Corporation
US ˙ NYSE ˙ US55933J2033

SecurityMX / Magnachip Semiconductor Corporation
InstitutionPolunin Capital Partners Ltd
Latest Disclosed Ownership57,011 shares
Latest Disclosed Value $ 164
Polunin Capital Partners Ltd reports 82.99% decrease in ownership of MX / Magnachip Semiconductor Corporation

On April 15, 2026 - Polunin Capital Partners Ltd filed a 13F-HR form disclosing ownership of 57,011 shares of Magnachip Semiconductor Corporation (US:MX) valued at $159,631 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 335,148 shares of Magnachip Semiconductor Corporation. This represents a change in shares of -82.99% during the quarter. The current value of the position is $509,108 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)
2026-04-15 2026-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 57,011 -278,137 -82.99 0 -100.00 0.0426
2026-01-20 2025-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 335,148 -12,947 -3.72 1 0.00 0.1564
2025-10-07 2025-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 348,095 -10,400 -2.90 1 0.00 0.1638
2025-07-10 2025-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 358,495 0 0.00 1 0.2361
2025-04-09 2025-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 358,495 -8,700 -2.37 1 -100.00 0.1919
2025-01-28 2024-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 367,195 0 0.00 2 0.00 0.3776
2024-10-24 2024-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 367,195 -8,300 -2.21 2 0.00 0.4226
2024-07-24 2024-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 375,495 0 0.00 2 -50.00 0.3118
2024-04-26 2024-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 375,495 0 0.00 2 0.00 0.3187
2024-01-25 2023-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 375,495 157,683 72.39 3 100.00 0.5273
2023-10-26 2023-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 217,812 0 0.00 2 -50.00 0.4071
2023-07-31 2023-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 217,812 6,100 2.88 2 100.00 0.4998
2023-05-15 2023-03-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 211,712 0 0.00 2 0.00 0.4067
2023-05-11 2023-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 211,712 0 2 0.4959
2023-02-08 2022-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 211,712 -1,800 -0.84 2 -99.95 0.4959
2022-11-04 2022-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 213,512 0 0.00 2,186 -29.53 0.7637
2022-08-10 2022-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 213,512 0 0.00 3,102 -14.07 0.9352
2022-05-09 2022-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 213,512 -9,100 -4.09 3,610 -22.66 1.0108
2022-02-07 2021-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 222,612 222,612 4,668 1.5102
2021-10-13 2021-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 0 -228,298 -100.00 0 -100.00
2021-08-04 2021-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 228,298 0 0.00 5,447 -4.17 1.6821
2021-05-06 2021-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 228,298 -29,500 -11.44 5,684 63.10 2.9433
2021-01-29 2020-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 257,798 0 0.00 3,485 -1.30 1.3598
2020-10-28 2020-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 257,798 -4,700 -1.79 3,531 30.63 0.9273
2020-08-03 2020-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 262,498 0 0.00 2,703 -6.79 0.6547
2020-05-04 2020-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 262,498 256,281 4,122.26 2,900 3,927.78 1.1632
2020-02-05 2019-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 6,217 6,217 72 0.0198
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.