Magnachip Semiconductor Corporation
US ˙ NYSE ˙ US55933J2033

SecurityMX / Magnachip Semiconductor Corporation
InstitutionClearline Capital LP
Latest Disclosed Ownership1,461,036 shares
Ownership 4.10%
Clearline Capital LP ownership in MX / Magnachip Semiconductor Corporation

2026-02-17 - Clearline Capital LP has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,461,036 shares of Magnachip Semiconductor Corporation (US:MX). This represents 4.1 percent ownership of the company. In their previous filing dated 2025-02-12 , Clearline Capital LP had reported owning 1,900,176 shares, indicating a decrease of -23.11 percent.

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)
2026-02-17 2026-02-17 13G/A 1,900,176 1,461,036 -23.11 4.10 -19.61
2025-02-12 2025-02-12 13G 1,900,176 5.10

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.

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 MAGNACHIP SEMICONDUCTOR COM 55933J203 1,114,590 -346,446 -23.71 3,121 -16.24 0.1621
2026-02-17 2025-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,461,036 -439,140 -23.11 3,726 -37.36 0.1838
2025-11-14 2025-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,900,176 0 0.00 5,948 -21.36 0.2730
2025-08-14 2025-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,900,176 0 0.00 7,563 16.03 0.2826
2025-05-16 2025-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,900,176 0 0.00 6,518 -14.68 0.3923
2025-02-14 2024-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,900,176 99,421 5.52 7,639 -9.17 1.0112
2024-11-14 2024-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,800,755 117,079 6.95 8,410 2.56 0.3569
2024-08-15 2024-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,683,676 459,365 37.52 8,200 20.03 0.2265
2024-05-15 2024-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,224,311 2,623 0.21 6,832 -25.44 0.3334
2024-02-14 2023-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,221,688 -5,779 -0.47 9,163 -10.18 0.5615
2023-11-14 2023-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,227,467 27,101 2.26 10,200 -23.99 0.8759
2023-08-15 2023-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,200,366 954 0.08 13,420 20.58 0.7779
2023-05-15 2023-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,199,412 66,996 5.92 11,131 4.67 1.6778
2023-02-14 2022-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,132,416 -195,862 -14.75 10,633 -21.83 1.9026
2022-11-14 2022-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,328,278 134,821 11.30 13,602 -21.56 1.6265
2022-08-15 2022-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,193,457 -11,096 -0.92 17,341 -14.87 2.2407
2022-05-16 2022-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,204,553 367,983 43.99 20,369 16.11 2.3419
2022-02-14 2021-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 836,570 44,885 5.67 17,543 24.77 1.9288
2021-11-15 2021-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 791,685 55,036 7.47 14,060 -20.00 1.3261
2021-08-16 2021-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 736,649 82,097 12.54 17,576 7.84 2.6194
2021-05-17 2021-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 654,552 -541,142 -45.26 16,298 0.82 2.1142
2021-02-16 2020-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,195,694 1,911 0.16 16,166 -1.16 3.6059
2020-11-16 2020-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,193,783 151,089 14.49 16,355 52.28 4.2882
2020-08-14 2020-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,042,694 269,219 34.81 10,740 25.66 3.4998
2020-05-15 2020-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 773,475 594,076 331.15 8,547 310.32 3.9517
2020-02-14 2019-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 179,399 48,993 37.57 2,083 57.56 0.8942
2019-11-14 2019-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 130,406 21,387 19.62 1,322 17.20 0.6023
2019-08-14 2019-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 109,019 -92,952 -46.02 1,128 -24.55 0.5508
2019-05-15 2019-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 201,971 -204,430 -50.30 1,495 -40.77 0.7817
2019-02-14 2018-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 406,401 101,765 33.41 2,524 -16.31 1.7312
2018-11-14 2018-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 304,636 72,041 30.97 3,016 26.51 1.7855
2018-08-14 2018-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 232,595 232,595 2,384 1.5501
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.