Magnachip Semiconductor Corporation
US ˙ NYSE ˙ US55933J2033

SecurityMX / Magnachip Semiconductor Corporation
InstitutionTwo Sigma Advisers, Lp
Latest Disclosed Ownership237,938 shares
Latest Disclosed Value $ 606,742
Two Sigma Advisers, Lp reports 18.16% decrease in ownership of MX / Magnachip Semiconductor Corporation

On February 17, 2026 - Two Sigma Advisers, Lp filed a 13F-HR form disclosing ownership of 237,938 shares of Magnachip Semiconductor Corporation (US:MX) valued at $606,742 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 290,738 shares of Magnachip Semiconductor Corporation. This represents a change in shares of -18.16% during the quarter. The current value of the position is $2,124,786 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)
2026-02-17 2025-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 237,938 -52,800 -18.16 607 -33.41 0.0012
2025-11-14 2025-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 290,738 -36,200 -11.07 910 -30.05 0.0018
2025-08-14 2025-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 326,938 -58,800 -15.24 1,301 -1.66 0.0027
2025-05-15 2025-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 385,738 -90,300 -18.97 1,323 -30.84 0.0030
2025-02-14 2024-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 476,038 -39,900 -7.73 1,914 -20.59 0.0044
2024-11-14 2024-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 515,938 -4,900 -0.94 2,409 -5.01 0.0056
2024-08-14 2024-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 520,838 -34,100 -6.14 2,536 -18.09 0.0057
2024-05-15 2024-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 554,938 49,500 9.79 3,097 -18.31 0.0072
2024-02-14 2023-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 505,438 193,700 62.14 3,791 46.33 0.0089
2023-11-14 2023-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 311,738 -68,700 -18.06 2,591 -39.10 0.0066
2023-08-14 2023-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 380,438 -24,700 -6.10 4,253 13.14 0.0108
2023-05-15 2023-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 405,138 -11,000 -2.64 3,760 -3.79 0.0097
2023-02-14 2022-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 416,138 150,900 56.89 3,908 43.85 0.0109
2022-11-14 2022-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 265,238 134,200 102.41 2,716 42.65 0.0079
2022-08-15 2022-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 131,038 51,800 65.37 1,904 42.09 0.0054
2022-05-16 2022-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 79,238 -55,100 -41.02 1,340 -52.43 0.0036
2022-02-14 2021-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 134,338 -113,600 -45.82 2,817 -36.02 0.0071
2021-11-15 2021-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 247,938 -412,400 -62.45 4,403 -72.06 0.0114
2021-08-16 2021-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 660,338 11,600 1.79 15,756 -2.46 0.0416
2021-05-17 2021-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 648,738 189,600 41.29 16,154 160.21 0.0444
2021-02-16 2020-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 459,138 43,700 10.52 6,208 9.07 0.0166
2020-11-16 2020-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 415,438 -93,817 -18.42 5,692 8.52 0.0163
2020-09-15 2020-06-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 509,255 27,700 5.75 5,245 -1.43 0.0154
2020-08-14 2020-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 509,255 27,700 5,245 15,156.3081
2020-05-15 2020-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 481,555 106,100 28.26 5,321 22.07 0.0204
2020-02-14 2019-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 375,455 139,100 58.85 4,359 81.85 0.0101
2019-11-14 2019-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 236,355 56,300 31.27 2,397 28.59 0.0059
2019-08-14 2019-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 180,055 -1,173 -0.65 1,864 39.00 0.0046
2019-05-15 2019-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 181,228 2,800 1.57 1,341 21.03 0.0034
2019-02-14 2018-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 178,428 -70,438 -28.30 1,108 -55.03 0.0030
2018-11-14 2018-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 248,866 -49,900 -16.70 2,464 -19.53 0.0060
2018-08-14 2018-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 298,766 -44,400 -12.94 3,062 -7.04 0.0082
2018-05-15 2018-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 343,166 -155,863 -31.23 3,294 -33.66 0.0089
2018-02-14 2017-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 499,029 78,963 18.80 4,965 4.13 0.0134
2017-11-14 2017-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 420,066 94,897 29.18 4,768 49.61 0.0135
2017-08-14 2017-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 325,169 -128,197 -28.28 3,187 -26.40 0.0105
2017-05-15 2017-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 453,366 230,427 103.36 4,330 213.31 0.0142
2017-02-14 2016-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 222,939 -9,798 -4.21 1,382 -28.80 0.0053
2016-11-14 2016-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 232,737 150,399 182.66 1,941 316.52 0.0083
2016-08-15 2016-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 82,338 55,700 209.10 466 221.38 0.0024
2016-05-16 2016-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 26,638 -6,400 -19.37 145 -33.49 0.0008
2015-11-16 2015-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 33,038 -76,900 -69.95 218 -74.32 0.0014
2016-02-09 2015-06-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COMMON STOCK 55933J203 109,938 15,000 15.80 849 63.58 0.0065
2015-08-14 2015-06-30 13F MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 114,038 878
2016-02-09 2015-03-31 13F/A-1 MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 94,938 17,300 22.28 519 -48.56 0.0040
2015-05-15 2015-03-31 13F MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 92,638 508
2016-02-09 2014-12-31 13F/A-1 MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 77,638 -65,500 -45.76 1,009 -39.76 0.0081
2015-02-17 2014-12-31 13F MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 77,638 1,006
2016-02-09 2014-09-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 143,138 14,100 10.93 1,675 -7.92 0.0132
2014-11-14 2014-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 140,438 1,637
2016-02-09 2014-06-30 13F/A-1 MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 129,038 14,900 13.05 1,819 14.33 0.0146
2014-08-14 2014-06-30 13F MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 129,038 1,821
2014-05-15 2014-03-31 13F MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 114,138 68,100 147.92 1,591 77.17 0.0145
2014-02-14 2013-12-31 13F MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 46,038 -51,700 -52.90 898 -57.30 0.0087
2013-11-14 2013-09-30 13F MAGNACHIP SEMICONDUCT COMMON STOCK 55933J203 97,738 13,100 15.48 2,103 35.94 0.0251
2013-08-14 2013-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 84,638 84,638 1,547 0.0221
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.