Magnachip Semiconductor Corporation
US ˙ NYSE ˙ US55933J2033

SecurityMX / Magnachip Semiconductor Corporation
InstitutionBarclays Plc
Latest Disclosed Ownership5,782 shares
Latest Disclosed Value $ 14,744
Barclays Plc ownership in MX / Magnachip Semiconductor Corporation

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 5,782 shares of Magnachip Semiconductor Corporation (US:MX) valued at $14,744 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 5,782 shares of Magnachip Semiconductor Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $49,449 USD.

Barclays Plc has a history of taking positions in derivatives of the underlying security (MX) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX / Magnachip Semiconductor Corporation Historical Put/Call Ratio
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)
2026-02-13 2025-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 0 0.00 15 -22.22 0.0000
2026-03-31 2025-09-30 13F/A-3 MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 0 0.00 18 -21.74 0.0000
2026-03-19 2025-09-30 13F/A-2 MAGNACHIP SEMICONDUCTOR COM 55933J203 2,709 -3,073 13 0.0000
2025-11-12 2025-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 0 18 0.0000
2026-02-27 2025-06-30 13F/A-2 MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 0 0.00 23 21.05 0.0000
2025-08-14 2025-06-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 0 0 0.0000
2025-08-13 2025-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 0 0 0.0000
2026-03-17 2025-03-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 0 0.00 20 -17.39 0.0000
2025-05-15 2025-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 0 0 0.0000
2026-03-19 2024-12-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 3,073 113.44 23 91.67 0.0000
2025-02-13 2024-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 5,782 3,073 0 0.0000
2026-03-31 2024-09-30 13F/A-2 MAGNACHIP SEMICONDUCTOR COM 55933J203 2,709 2,709 13 0.0000
2024-11-19 2024-09-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 2,709 2,709 0 0.0000
2024-11-15 2024-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 2,709 2,709 0 0.0000
2026-03-23 2024-06-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 0 -7,400 -100.00 0 -100.00
2024-08-14 2024-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 0 -7,400 0 0.0000
2026-03-24 2024-03-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 7,400 -606 -7.57 41 -31.67 0.0000
2024-05-15 2024-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 7,400 -606 0 0.0000
2026-03-25 2023-12-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 8,006 261 3.37 60 -6.25 0.0000
2024-02-15 2023-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 8,006 261 0 0.0000
2026-03-26 2023-09-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 7,745 91 1.19 64 -24.71 0.0000
2023-11-07 2023-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 7,745 91 0 0.0000
2026-03-30 2023-06-30 13F/A-2 MAGNACHIP SEMICONDUCTOR COM 55933J203 7,654 7,654 86 0.0001
2023-09-20 2023-06-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 7,654 2,754 0 0.0001
2023-08-03 2023-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 7,654 0
2026-03-30 2022-12-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 0 -4,900 -100.00 0 -100.00
2022-11-03 2022-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 4,900 3,700 308.33 50 194.12 0.0001
2022-08-12 2022-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,200 1,007 521.76 17 466.67 0.0000
2022-05-16 2022-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 193 -110,187 -99.83 3 -99.85 0.0000
2021-11-09 2021-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 110,380 11,511 11.64 1,960 -16.91 0.0009
2021-08-13 2021-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 98,869 84,640 594.84 2,359 566.38 0.0011
2021-05-13 2021-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 14,229 13,129 1,193.55 354 2,260.00 0.0002
2021-02-11 2020-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,100 0 0.00 15 0.00 0.0000
2020-11-12 2020-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,100 -6,700 -85.90 15 -81.25 0.0000
2020-08-12 2020-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 7,800 -15,600 -66.67 80 -70.59 0.0001
2020-02-10 2019-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 23,400 0 0.00 272 14.77 0.0002
2019-11-15 2019-09-30 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 23,400 -25,666 -52.31 237 -53.35 0.0001
2019-11-14 2019-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 23,400 -25,666 237 54.7947
2019-08-14 2019-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 49,066 44,595 997.43 508 1,439.39 0.0003
2019-05-15 2019-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 4,471 3,934 732.59 33 1,000.00 0.0000
2019-02-14 2018-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 537 -3,447 -86.52 3 -92.31 0.0000
2018-11-14 2018-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 3,984 -12,263 -75.48 39 -76.65 0.0000
2018-08-14 2018-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 16,247 16,230 95,470.59 167 0.0001
2018-05-15 2018-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 17 -2,493 -99.32 0 -100.00
2018-02-14 2017-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 2,510 -10,166 -80.20 25 -82.64 0.0000
2017-11-14 2017-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 12,676 12,476 6,238.00 144 7,100.00 0.0001
2017-05-15 2017-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 200 -15,322 -98.71 2 -97.92 0.0000
2017-02-14 2016-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 15,522 -103,023 -86.91 96 -90.28 0.0001
2016-11-14 2016-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 118,545 -22,832 -16.15 988 23.50 0.0011
2016-08-12 2016-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 141,377 101,850 257.67 800 304.04 0.0010
2016-05-16 2016-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 39,527 39,484 91,823.26 198 0.0003
2016-02-12 2015-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 43 -551,023 -99.99 0 -100.00
2015-11-13 2015-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 551,066 521,747 1,779.55 3,306 1,512.68 0.0040
2015-08-14 2015-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 29,319 -225,379 -88.49 205 -83.90 0.0002
2015-05-19 2015-03-31 13F/A-1 MAGNACHIP SEMICONDUCTOR COM 55933J203 254,698 -353,866 -58.15 1,273 -82.57 0.0015
2015-05-14 2015-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 254,698 1,273
2015-02-13 2014-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 608,564 -738,564 -54.83 7,303 -50.72 0.0070
2014-11-14 2014-09-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 1,347,128 544,416 67.82 14,819 31.85 0.0142
2014-08-14 2014-06-30 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 802,712 23,936 3.07 11,239 11.00 0.0119
2014-05-15 2014-03-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 778,776 771,926 11,268.99 10,125 7,688.46 0.0115
2014-02-13 2013-12-31 13F MAGNACHIP SEMICONDUCTOR COM 55933J203 6,850 6,850 130 0.0001
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-03-30 2022-12-31 13F/A MAGNACHIP SEMICONDUCTOR OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-13 2022-12-31 13F MAGNACHIP SEMICONDUCTOR OPT Call 0 0 n/a n/a n/a
2022-11-03 2022-09-30 13F MAGNACHIP SEMICONDUCTOR OPT Call 28,600 0.00 292 -29.81 n/a n/a n/a
2022-08-12 2022-06-30 13F MAGNACHIP SEMICONDUCTOR OPT Call 28,600 416 n/a n/a n/a
2016-05-16 2016-03-31 13F MAGNACHIP SEMICONDUCTOR OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-02-12 2015-12-31 13F MAGNACHIP SEMICONDUCTOR OPT Call 247,800 296.48 1,239 230.40 n/a n/a n/a
2015-11-13 2015-09-30 13F MAGNACHIP SEMICONDUCTOR OPT Call 62,500 -89.05 375 -90.62 n/a n/a n/a
2015-08-14 2015-06-30 13F MAGNACHIP SEMICONDUCTOR OPT Call 570,900 1,091.86 3,996 1,565.00 n/a n/a n/a
2015-05-19 2015-03-31 13F/A MAGNACHIP SEMICONDUCTOR OPT Call 47,900 -37.39 240 -73.86 n/a n/a n/a
2015-05-14 2015-03-31 13F MAGNACHIP SEMICONDUCTOR OPT Call 47,900 240 n/a n/a n/a
2015-02-13 2014-12-31 13F MAGNACHIP SEMICONDUCTOR OPT Call 76,500 59.71 918 282.50 n/a n/a n/a
2014-08-14 2014-06-30 13F MAGNACHIP SEMICONDUCTOR OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-05-15 2014-03-31 13F MAGNACHIP SEMICONDUCTOR OPT Call 53,900 701 n/a n/a n/a
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.